diff --git a/.github/workflows/ci-test.yml b/.github/workflows/ci-test.yml
index f460be7c..db6a57c7 100644
--- a/.github/workflows/ci-test.yml
+++ b/.github/workflows/ci-test.yml
@@ -11,11 +11,11 @@ permissions:
 
 jobs:
   # Lint, type-check and security run once on a single pinned interpreter
-  # (Python 3.10, matching the mypy/ruff target-version in pyproject). These
+  # (Python 3.11, matching the mypy/ruff target-version in pyproject). These
   # checks are interpreter-agnostic, so fanning them across the matrix would
   # only duplicate work.
   quality:
-    name: Lint, type-check & security (Py 3.10)
+    name: Lint, type-check & security (Py 3.11)
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
@@ -24,10 +24,10 @@ jobs:
           # A PR can branch before the base tip; its merge-base needs full history.
           fetch-depth: 0
 
-      - name: Set up Python 3.10
+      - name: Set up Python 3.11
         uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
-          python-version: "3.10"
+          python-version: "3.11"
 
       - name: Install package with dev extras
         run: |
@@ -65,19 +65,19 @@ jobs:
       fail-fast: false
       matrix:
         # Run the full suite on every declared Python version. The package's
-        # environment markers resolve azure-functions 1.x on 3.10-3.12 and
+        # environment markers resolve azure-functions 1.x on 3.11-3.12 and
         # permit 2.x on 3.13-3.14; the dedicated wheel lanes below separately
         # prove that the built distribution works against the 2.x line.
-        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
+        python-version: ["3.11", "3.12", "3.13", "3.14"]
         # 'latest' resolves whatever satisfies the pyproject.toml pin at CI time.
         azure-functions-version: ["latest"]
         include:
           # Extra SDK-version coverage on the lowest supported Python.
           # Keep in sync with the SDK compatibility matrix in README.md and
           # the version pin in pyproject.toml.
-          - python-version: "3.10"
+          - python-version: "3.11"
             azure-functions-version: "1.21.0"
-          - python-version: "3.10"
+          - python-version: "3.11"
             azure-functions-version: "1.24.0"
 
     steps:
@@ -91,7 +91,7 @@ jobs:
 
       - name: Assert the runtime interpreter matches the matrix cell
         # Tests must run on the interpreter this cell claims to exercise. Before
-        # #554 the whole matrix ran through the Python-3.10-pinned hatch env, so
+        # #554 the whole matrix ran through the default pinned Hatch env, so
         # 3.11/3.12 were never actually tested. This guard fails loudly if the
         # running interpreter ever drifts from matrix.python-version again.
         env:
@@ -134,13 +134,13 @@ jobs:
 
       - name: Run tests on the matrix interpreter
         # Raw pytest on the interpreter provisioned above (NOT through the
-        # Python-3.10-pinned hatch env). The repo pytest config enables --cov
-        # with fail_under=95, but only the 3.10 x latest cell collects the full
+        # default pinned Hatch env). The repo pytest config enables --cov
+        # with fail_under=95, but only the 3.11 x latest cell collects the full
         # suite. Enforce the coverage gate on the
-        # canonical 3.10 x latest cell and run the rest with --no-cov so a
+        # canonical 3.11 x latest cell and run the rest with --no-cov so a
         # version-variant cell cannot fail the build on a spurious coverage dip.
         env:
-          IS_COVERAGE_CELL: ${{ matrix.python-version == '3.10' && matrix.azure-functions-version == 'latest' }}
+          IS_COVERAGE_CELL: ${{ matrix.python-version == '3.11' && matrix.azure-functions-version == 'latest' }}
         run: |
           if [ "$IS_COVERAGE_CELL" = "true" ]; then
             pytest tests/
@@ -149,11 +149,11 @@ jobs:
           fi
 
       - name: Verify coverage output
-        if: matrix.python-version == '3.10' && matrix.azure-functions-version == 'latest'
+        if: matrix.python-version == '3.11' && matrix.azure-functions-version == 'latest'
         run: ls -lh coverage.xml
 
       - name: Upload coverage to Codecov
-        if: matrix.python-version == '3.10' && matrix.azure-functions-version == 'latest' && github.actor != 'dependabot[bot]'
+        if: matrix.python-version == '3.11' && matrix.azure-functions-version == 'latest' && github.actor != 'dependabot[bot]'
         uses: codecov/codecov-action@303a32d7a59b442fa8d48b6a1cc6825c09c847a5 # v7.1.1
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
@@ -175,7 +175,15 @@ jobs:
   # reports, and a skipped or cancelled dependency is not success, so it cannot
   # pass by being skipped.
   ci-required:
-    needs: [quality, test, azure-functions-2x, host-smoke]
+    needs:
+      - quality
+      - test
+      - minimum-dependencies
+      - artifact-build
+      - artifact-python310-negative
+      - artifact-python311
+      - azure-functions-2x
+      - host-smoke
     if: always()
     runs-on: ubuntu-latest
     steps:
@@ -183,17 +191,29 @@ jobs:
         env:
           QUALITY_RESULT: ${{ needs.quality.result }}
           TEST_RESULT: ${{ needs.test.result }}
+          MINIMUM_DEPENDENCIES_RESULT: ${{ needs.minimum-dependencies.result }}
+          ARTIFACT_BUILD_RESULT: ${{ needs.artifact-build.result }}
+          ARTIFACT_PY310_RESULT: ${{ needs.artifact-python310-negative.result }}
+          ARTIFACT_PY311_RESULT: ${{ needs.artifact-python311.result }}
           AF2X_RESULT: ${{ needs.azure-functions-2x.result }}
           HOST_SMOKE_RESULT: ${{ needs.host-smoke.result }}
         run: |
           set -euo pipefail
           echo "quality result: ${QUALITY_RESULT}"
           echo "test result:    ${TEST_RESULT}"
+          echo "minimum deps:   ${MINIMUM_DEPENDENCIES_RESULT}"
+          echo "artifact build: ${ARTIFACT_BUILD_RESULT}"
+          echo "artifact 3.10:  ${ARTIFACT_PY310_RESULT}"
+          echo "artifact 3.11:  ${ARTIFACT_PY311_RESULT}"
           echo "af 2.x result:  ${AF2X_RESULT}"
           echo "host smoke:     ${HOST_SMOKE_RESULT}"
 
           if [ "${QUALITY_RESULT}" = "success" ] \
             && [ "${TEST_RESULT}" = "success" ] \
+            && [ "${MINIMUM_DEPENDENCIES_RESULT}" = "success" ] \
+            && [ "${ARTIFACT_BUILD_RESULT}" = "success" ] \
+            && [ "${ARTIFACT_PY310_RESULT}" = "success" ] \
+            && [ "${ARTIFACT_PY311_RESULT}" = "success" ] \
             && [ "${AF2X_RESULT}" = "success" ] \
             && [ "${HOST_SMOKE_RESULT}" = "success" ]; then
             echo "Quality, test matrix, azure-functions 2.x and host smoke all succeeded. Passing."
@@ -203,18 +223,161 @@ jobs:
           echo "::error::Required checks did not all succeed -- quality='${QUALITY_RESULT}' test='${TEST_RESULT}' af2x='${AF2X_RESULT}' host-smoke='${HOST_SMOKE_RESULT}'"
           exit 1
 
+  minimum-dependencies:
+    name: Minimum dependencies (Py 3.11)
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Set up Python 3.11
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
+        with:
+          python-version: "3.11"
+
+      - name: Install minimum runtime and development dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install "azure-functions==1.21.0"
+          pip install -e ".[dev]"
+
+      - name: Assert the declared azure-functions floor is resolved
+        run: |
+          pip show azure-functions azure-functions-openapi
+          python - <<'PY'
+          from importlib.metadata import version
+
+          resolved = version("azure-functions")
+          print(f"resolved azure-functions={resolved}")
+          assert resolved == "1.21.0"
+          PY
+
+      - name: Run full suite against minimum runtime dependencies
+        run: pytest tests/ --no-cov
+
+  artifact-build:
+    name: Build compatibility artifacts
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Set up Python 3.11
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
+        with:
+          python-version: "3.11"
+
+      - name: Build wheel and source distribution
+        run: |
+          python -m pip install --upgrade pip build
+          python -m build
+
+      - name: Upload compatibility artifacts
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
+        with:
+          name: compatibility-dist
+          path: dist/
+          if-no-files-found: error
+
+  artifact-python310-negative:
+    name: Wheel install rejection (Py 3.10, negative test)
+    needs: artifact-build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Python 3.10 for negative install test
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
+        with:
+          python-version: "3.10"
+
+      - name: Download built artifacts
+        uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4
+        with:
+          name: compatibility-dist
+          path: compatibility-dist
+
+      - name: Require wheel rejection by Requires-Python
+        run: |
+          wheel=$(find compatibility-dist -maxdepth 1 -name '*.whl' -print -quit)
+          test -n "$wheel"
+          if output=$(python -m pip install --no-deps "$wheel" 2>&1); then
+            echo "::error ::Python 3.10 unexpectedly installed the candidate wheel"
+            exit 1
+          fi
+          printf '%s\n' "$output"
+          grep -F "requires a different Python" <<<"$output"
+          grep -F "3.10" <<<"$output"
+          grep -F ">=3.11" <<<"$output"
+
+  artifact-python311:
+    name: Wheel install and smoke (Py 3.11)
+    needs: artifact-build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Python 3.11
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
+        with:
+          python-version: "3.11"
+
+      - name: Download built artifacts
+        uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4
+        with:
+          name: compatibility-dist
+          path: compatibility-dist
+
+      - name: Install wheel with runtime dependencies
+        run: |
+          wheel=$(find compatibility-dist -maxdepth 1 -name '*.whl' -print -quit)
+          test -n "$wheel"
+          python -m pip install "$wheel"
+
+      - name: Check installed wheel outside the checkout
+        working-directory: /tmp
+        env:
+          CHECKOUT: ${{ github.workspace }}
+        run: |
+          python -m pip check
+          python - <<'PY'
+          import os
+          from pathlib import Path
+
+          import azure.functions as func
+          import azure_functions_openapi
+          from azure_functions_openapi import generate_openapi_spec, openapi, scan_endpoint_metadata
+
+          module_path = Path(azure_functions_openapi.__file__).resolve()
+          checkout = Path(os.environ["CHECKOUT"]).resolve()
+          print(f"imported module: {module_path}")
+          assert not module_path.is_relative_to(checkout)
+
+          app = func.FunctionApp()
+
+          @openapi(summary="Artifact smoke", responses={200: {"description": "OK"}})
+          @app.route(route="artifact-smoke", methods=["GET"])
+          def artifact_smoke(req: func.HttpRequest) -> func.HttpResponse:
+              return func.HttpResponse("ok")
+
+          scan_endpoint_metadata(app)
+          spec = generate_openapi_spec()
+          assert "/api/artifact-smoke" in spec["paths"]
+          assert spec["paths"]["/api/artifact-smoke"]["get"]
+          PY
+
   host-smoke:
-    name: Real Functions host smoke (Py 3.12)
+    name: Real Functions host smoke (Py ${{ matrix.python-version }})
     runs-on: ubuntu-latest
     timeout-minutes: 5
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.11", "3.12"]
     steps:
       - name: Checkout code
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
-      - name: Set up Python 3.12
+      - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
-          python-version: "3.12"
+          python-version: ${{ matrix.python-version }}
 
       - name: Install Functions Core Tools v4 and smoke app
         run: |
@@ -279,7 +442,7 @@ jobs:
   #
   # Why a wheel + dedicated job (not the main matrix): azure-functions 2.x
   # declares Requires-Python >=3.13, so it is only installable on 3.13/3.14 --
-  # interpreters the main `test` matrix (3.10-3.12) never covers. This lane
+  # interpreters the main `test` matrix proves independently. This lane
   # installs the built wheel directly (no hatch env) on real 3.13 AND 3.14
   #
   # Gating: this lane runs on every PR as a VISIBLE compatibility signal. The
@@ -309,7 +472,7 @@ jobs:
         # tree, mirroring the sibling proof lanes (azure-functions-validation
         # #351 / azure-functions-langgraph #350). Building the distribution
         # artifact also avoids hatch's default env, which is pinned to Python
-        # 3.10 in pyproject and cannot install azure-functions 2.x (Requires-
+    # 3.11 in pyproject and cannot install azure-functions 2.x (Requires-
         # Python >=3.13).
         run: |
           python -m pip install --upgrade pip build
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index b7e8fc34..178dd1d8 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -22,7 +22,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
-          python-version: "3.10"
+          python-version: "3.11"
 
       - name: Lint Mermaid diagram labels
         run: python scripts/lint_mermaid.py
diff --git a/.github/workflows/e2e-azure.yml b/.github/workflows/e2e-azure.yml
index 5e2b9b96..84e2cc05 100644
--- a/.github/workflows/e2e-azure.yml
+++ b/.github/workflows/e2e-azure.yml
@@ -18,9 +18,9 @@ on:
         required: false
         type: string
       python_version:
-        description: Python runtime version for the Azure Function App (e.g. 3.10, 3.13)
+        description: Python runtime version for the Azure Function App (e.g. 3.12, 3.13)
         required: false
-        default: "3.10"
+        default: "3.12"
         type: string
   workflow_call:
     inputs:
@@ -33,9 +33,9 @@ on:
         required: false
         type: string
       python_version:
-        description: Python runtime version for the Azure Function App (e.g. 3.10, 3.13)
+        description: Python runtime version for the Azure Function App (e.g. 3.12, 3.13)
         required: false
-        default: "3.10"
+        default: "3.12"
         type: string
     secrets:
       AZURE_CLIENT_ID:
@@ -104,13 +104,13 @@ jobs:
                 location="$AZURE_LOCATION" \
                 functionAppName="${{ steps.names.outputs.app }}" \
                 storageName="${{ steps.names.outputs.st }}" \
-                pythonVersion="${{ inputs.python_version || '3.10' }}" \
+                pythonVersion="${{ inputs.python_version || '3.12' }}" \
                 enableAppInsights=false
 
-      - name: Set up Python ${{ inputs.python_version || '3.10' }}
+      - name: Set up Python ${{ inputs.python_version || '3.12' }}
         uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
-          python-version: "${{ inputs.python_version || '3.10' }}"
+          python-version: "${{ inputs.python_version || '3.12' }}"
 
       - name: Install Azure Functions Core Tools
         run: |
diff --git a/.github/workflows/maintenance.yml b/.github/workflows/maintenance.yml
index aa31ee41..ed03456c 100644
--- a/.github/workflows/maintenance.yml
+++ b/.github/workflows/maintenance.yml
@@ -19,7 +19,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
-          python-version: "3.12"
+          python-version: "3.11"
 
       - name: Install Hatch and dependencies via Makefile
         run: |
diff --git a/.github/workflows/publish-pypi.yml b/.github/workflows/publish-pypi.yml
index 711f8b7b..705b9a07 100644
--- a/.github/workflows/publish-pypi.yml
+++ b/.github/workflows/publish-pypi.yml
@@ -54,7 +54,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
-          python-version: "3.12"
+          python-version: "3.11"
 
       - name: Install build dependencies
         run: |
@@ -101,7 +101,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
-          python-version: "3.12"
+          python-version: "3.11"
 
       - name: Install Hatch
         run: pip install hatch
@@ -123,7 +123,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
-          python-version: "3.10"
+          python-version: "3.11"
 
       - name: Download candidate wheel
         uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4
@@ -174,7 +174,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
-          python-version: "3.10"
+          python-version: "3.11"
 
       - name: Set up Node.js (func Core Tools + Azurite)
         uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
diff --git a/.github/workflows/screenshots.yml b/.github/workflows/screenshots.yml
index 40a62252..8abc036b 100644
--- a/.github/workflows/screenshots.yml
+++ b/.github/workflows/screenshots.yml
@@ -23,10 +23,10 @@ jobs:
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
-      - name: Set up Python 3.10
+      - name: Set up Python 3.11
         uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
-          python-version: "3.10"
+          python-version: "3.11"
 
       - name: Install checker dependencies
         run: pip install pyyaml
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index 33419754..6f76dbd3 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -21,7 +21,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
-          python-version: "3.12"
+          python-version: "3.11"
 
       - name: Install Hatch and dependencies via Makefile
         run: |
diff --git a/AGENTS.md b/AGENTS.md
index d622447a..ef4e382c 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -8,7 +8,7 @@
 - Project: `azure-functions-openapi`
 - Project type: Python library
 - Runtime scope: Azure Functions Python v2 programming model
-- Minimum supported Python: `3.10`
+- Minimum supported Python: `3.11`
 - Packaging: `pyproject.toml` with Hatch
 
 ## Root vs Docs
@@ -266,7 +266,7 @@ Use Makefile entry points only. Do not bypass the Makefile in CI or contributor
 
 ## Compatibility Rules
 
-- Runtime code must remain compatible with Python `3.10`.
+- Runtime code must remain compatible with Python `3.11`.
 - Public APIs must be fully typed.
 - Avoid silent behavior changes.
 - Breaking changes require explicit documentation and versioning discussion.
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 24b600aa..24b88229 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -34,9 +34,9 @@ Recommended branch prefixes:
 
 ## Local development quickstart
 
-The package supports Python `>=3.10,<3.15` (currently Python 3.10 through 3.14).
+The package supports Python `>=3.11,<3.15` (currently Python 3.11 through 3.14).
 The default Hatch development environment is intentionally provisioned with
-Python 3.10, so `make install` may download or select Python 3.10 even when
+Python 3.11, so `make install` may download or select Python 3.11 even when
 your machine's default interpreter is newer. From the repository root, run:
 
 ```bash
diff --git a/DESIGN.md b/DESIGN.md
index a2429503..bc85c26d 100644
--- a/DESIGN.md
+++ b/DESIGN.md
@@ -61,7 +61,7 @@ Note: `render_swagger_ui()` does not embed or generate the OpenAPI spec. It retu
 
 ## Compatibility Policy
 
-- Minimum supported Python version: `3.10`
+- Minimum supported Python version: `3.11`
 - Supported runtime target: Azure Functions Python v2 programming model
 - Public APIs follow semantic versioning expectations
 
diff --git a/README.ja.md b/README.ja.md
index 5650188a..2ad1d90b 100644
--- a/README.ja.md
+++ b/README.ja.md
@@ -4,7 +4,7 @@
 
 [![PyPI](https://img.shields.io/pypi/v/azure-functions-openapi.svg)](https://pypi.org/project/azure-functions-openapi/)
 [![Downloads](https://static.pepy.tech/badge/azure-functions-openapi/month)](https://pepy.tech/project/azure-functions-openapi)
-[![Python Version](https://img.shields.io/badge/python-3.10%20%7C%203.11%20%7C%203.12%20%7C%203.13%20%7C%203.14-blue)](https://pypi.org/project/azure-functions-openapi/)
+[![Python Version](https://img.shields.io/badge/python-3.11%20%7C%203.12%20%7C%203.13%20%7C%203.14-blue)](https://pypi.org/project/azure-functions-openapi/)
 [![CI](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/ci-test.yml/badge.svg)](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/ci-test.yml)
 [![Release](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/publish-pypi.yml/badge.svg)](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/publish-pypi.yml)
 [![Security Scans](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/security.yml/badge.svg)](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/security.yml)
@@ -140,12 +140,12 @@ azure-functions-openapi
 
 このパッケージは、`azure-functions` SDK からルート、メソッド、ハンドラーを 1 つの分離されたアダプター（`azure_functions_openapi.adapters`）を介して検出します。検出は **公開 API 優先** で、公開された冪等な `FunctionBuilder.build()` で列挙し、その他はすべて公開 `Function` アクセサー（`get_function_name` / `get_user_function` / `get_bindings` / `is_http_function`）を介して読み取ります。アダプターは冪等でない `FunctionApp.get_functions()` を決して呼び出しません。列挙に公開の代替手段がない **唯一** の非公開トークン `app._function_builders` のみがアダプター内部に分離され、必須のガードテストで保護されます。CI で明示的なマトリックスで検証します。経緯は [イシュー #258](https://github.com/yeongseon/azure-functions-openapi-python/issues/258) と [イシュー #327](https://github.com/yeongseon/azure-functions-openapi-python/issues/327) を参照してください。
 
-| `azure-functions` | Python 3.10 | Python 3.11 | Python 3.12 | Python 3.13 | Python 3.14 |
-| ----------------- | :---------: | :---------: | :---------: | :---------: | :---------: |
-| `1.21.0`（下限）  | ✅ 検証済 |             |             |             |             |
-| `1.24.0`          | ✅ 検証済 |             |             |             |             |
-| `latest 1.x`      | ✅ 検証済 | ✅ 検証済 | ✅ 検証済 |             |             |
-| `2.x` (`>=2,<3`)  |           |           |           | ✅ 検証済 | ✅ 検証済 |
+| `azure-functions` | Python 3.11 | Python 3.12 | Python 3.13 | Python 3.14 |
+| ----------------- | :---------: | :---------: | :---------: | :---------: |
+| `1.21.0`（下限）  | ✅ 検証済 |             |             |             |
+| `1.24.0`          | ✅ 検証済 |             |             |             |
+| `latest 1.x`      | ✅ 検証済 | ✅ 検証済 |             |             |
+| `2.x` (`>=2,<3`)  |           |           | ✅ 検証済 | ✅ 検証済 |
 
 `pyproject.toml` のバージョンピンはインタプリタに依存します: Python < 3.13 では `azure-functions>=1.21.0,<2.0.0`、Python 3.13+ では `azure-functions>=1.21.0,<3.0.0`（未認証の `azure-functions` 3.x を除外）です。下限が `1.21.0` なのは、それ以前のリリースが `FunctionBuilder.__call__` から `None` を返すためです（テストと CLI 抽出でデコレートされたハンドラーの直接呼び出しが壊れる）。分割している理由は、`azure-functions` 2.x が Python < 3.13 のサポートを廃止するため、2.x ラインは Python 3.13+ でのみインストール・提供されるからです。2.x パスは CI の専用 wheel ベース互換性マトリックス（実際の Python 3.13 および 3.14 インタプリタ）と、実際の Azure 認証 — koreacentral の Flex Consumption プランにデプロイされた Python 3.13 Function App — によって実証されています。上限解除の作業は [イシュー #528](https://github.com/yeongseon/azure-functions-openapi-python/issues/528) と [イシュー #488](https://github.com/yeongseon/azure-functions-openapi-python/issues/488) を参照してください。
 
diff --git a/README.ko.md b/README.ko.md
index 7e53b87c..22684d69 100644
--- a/README.ko.md
+++ b/README.ko.md
@@ -4,7 +4,7 @@
 
 [![PyPI](https://img.shields.io/pypi/v/azure-functions-openapi.svg)](https://pypi.org/project/azure-functions-openapi/)
 [![Downloads](https://static.pepy.tech/badge/azure-functions-openapi/month)](https://pepy.tech/project/azure-functions-openapi)
-[![Python Version](https://img.shields.io/badge/python-3.10%20%7C%203.11%20%7C%203.12%20%7C%203.13%20%7C%203.14-blue)](https://pypi.org/project/azure-functions-openapi/)
+[![Python Version](https://img.shields.io/badge/python-3.11%20%7C%203.12%20%7C%203.13%20%7C%203.14-blue)](https://pypi.org/project/azure-functions-openapi/)
 [![CI](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/ci-test.yml/badge.svg)](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/ci-test.yml)
 [![Release](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/publish-pypi.yml/badge.svg)](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/publish-pypi.yml)
 [![Security Scans](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/security.yml/badge.svg)](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/security.yml)
@@ -140,12 +140,12 @@ azure-functions-openapi
 
 이 패키지는 `azure-functions` SDK에서 라우트, 메서드, 핸들러를 하나의 격리된 어댑터(`azure_functions_openapi.adapters`)를 통해 검색합니다. 검색은 **공개 API 우선**으로, 공개적이고 멱등한 `FunctionBuilder.build()`로 열거하며 나머지는 모두 공개 `Function` 접근자(`get_function_name` / `get_user_function` / `get_bindings` / `is_http_function`)를 통해 읽습니다. 어댑터는 멱등하지 않은 `FunctionApp.get_functions()`를 절대 호출하지 않습니다. 열거에 공개 대체 수단이 없는 **유일한** 비공개 토큰 `app._function_builders`만 어댑터 내부에 격리되어 있으며 필수 가드 테스트로 보호됩니다. CI에서 명시적 매트릭스로 검증합니다. 배경은 [이슈 #258](https://github.com/yeongseon/azure-functions-openapi-python/issues/258)과 [이슈 #327](https://github.com/yeongseon/azure-functions-openapi-python/issues/327)을 참고하세요.
 
-| `azure-functions` | Python 3.10 | Python 3.11 | Python 3.12 | Python 3.13 | Python 3.14 |
-| ----------------- | :---------: | :---------: | :---------: | :---------: | :---------: |
-| `1.21.0` (최소)   | ✅ 테스트됨 |             |             |             |             |
-| `1.24.0`          | ✅ 테스트됨 |             |             |             |             |
-| `latest 1.x`      | ✅ 테스트됨 | ✅ 테스트됨 | ✅ 테스트됨 |             |             |
-| `2.x` (`>=2,<3`)  |             |             |             | ✅ 테스트됨 | ✅ 테스트됨 |
+| `azure-functions` | Python 3.11 | Python 3.12 | Python 3.13 | Python 3.14 |
+| ----------------- | :---------: | :---------: | :---------: | :---------: |
+| `1.21.0` (최소)   | ✅ 테스트됨 |             |             |             |
+| `1.24.0`          | ✅ 테스트됨 |             |             |             |
+| `latest 1.x`      | ✅ 테스트됨 | ✅ 테스트됨 |             |             |
+| `2.x` (`>=2,<3`)  |             |             | ✅ 테스트됨 | ✅ 테스트됨 |
 
 `pyproject.toml`의 버전 핀은 인터프리터에 따라 다릅니다: Python < 3.13에서는 `azure-functions>=1.21.0,<2.0.0`, Python 3.13+에서는 `azure-functions>=1.21.0,<3.0.0`(미인증 `azure-functions` 3.x 차단)입니다. 최소 버전이 `1.21.0`인 이유는 그 이전 릴리스가 `FunctionBuilder.__call__`에서 `None`을 반환하기 때문입니다(테스트와 CLI 추출에서 데코레이트된 핸들러의 직접 호출이 깨짐). 이렇게 나눈 이유는 `azure-functions` 2.x가 Python < 3.13 지원을 중단하므로, 2.x 라인은 Python 3.13+에서만 설치 가능하고 제공되기 때문입니다. 2.x 경로는 CI의 전용 wheel 기반 호환성 매트릭스(실제 Python 3.13 및 3.14 인터프리터)와 실제 Azure 인증 — koreacentral의 Flex Consumption 요금제에 배포된 Python 3.13 Function App — 으로 검증되었습니다. 상한 해제 작업은 [이슈 #528](https://github.com/yeongseon/azure-functions-openapi-python/issues/528)과 [이슈 #488](https://github.com/yeongseon/azure-functions-openapi-python/issues/488)을 참고하세요.
 
diff --git a/README.md b/README.md
index de9d9562..def5b77c 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 
 [![PyPI](https://img.shields.io/pypi/v/azure-functions-openapi.svg)](https://pypi.org/project/azure-functions-openapi/)
 [![Downloads](https://static.pepy.tech/badge/azure-functions-openapi/month)](https://pepy.tech/project/azure-functions-openapi)
-[![Python Version](https://img.shields.io/badge/python-3.10%20%7C%203.11%20%7C%203.12%20%7C%203.13%20%7C%203.14-blue)](https://pypi.org/project/azure-functions-openapi/)
+[![Python Version](https://img.shields.io/badge/python-3.11%20%7C%203.12%20%7C%203.13%20%7C%203.14-blue)](https://pypi.org/project/azure-functions-openapi/)
 [![CI](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/ci-test.yml/badge.svg)](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/ci-test.yml)
 [![Release](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/publish-pypi.yml/badge.svg)](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/publish-pypi.yml)
 [![Security Scans](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/security.yml/badge.svg)](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/security.yml)
@@ -17,8 +17,6 @@ Read this in: [한국어](README.ko.md) | [日本語](README.ja.md) | [简体中
 
 OpenAPI (Swagger) documentation and Swagger UI for the **Azure Functions Python v2 programming model**.
 
-> **Python 3.10 is deprecated.** Support ends in the next minor release — Python 3.10 reaches end of life in October 2026. Importing the package on Python 3.10 emits a `FutureWarning`; upgrade to Python 3.11 or newer.
-
 ## Why this exists
 
 Azure Functions Python v2 has no built-in API documentation story:
@@ -179,12 +177,12 @@ azure-functions-openapi
 
 This package discovers routes, methods, and handlers from the `azure-functions` SDK through a single isolated adapter (`azure_functions_openapi.adapters`). Discovery is **public-API-first**: it enumerates via the public, idempotent `FunctionBuilder.build()` and reads everything else through public `Function` accessors (`get_function_name` / `get_user_function` / `get_bindings` / `is_http_function`). The adapter never calls the non-idempotent `FunctionApp.get_functions()`. The **one** unavoidable private token — `app._function_builders`, which has no public substitute for enumeration — lives exclusively in the adapter and is covered by a mandatory guard test. We validate the package against an explicit matrix in CI. See [issue #258](https://github.com/yeongseon/azure-functions-openapi-python/issues/258) and [issue #327](https://github.com/yeongseon/azure-functions-openapi-python/issues/327) for background.
 
-| `azure-functions`  | Python 3.10 | Python 3.11 | Python 3.12 | Python 3.13 | Python 3.14 |
-| ------------------ | :---------: | :---------: | :---------: | :---------: | :---------: |
-| `1.21.0` (floor)   | ✅ tested   |             |             |             |             |
-| `1.24.0`           | ✅ tested   |             |             |             |             |
-| `latest 1.x`       | ✅ tested   | ✅ tested   | ✅ tested   |             |             |
-| `2.x` (`>=2,<3`)   |             |             |             | ✅ tested   | ✅ tested   |
+| `azure-functions`  | Python 3.11 | Python 3.12 | Python 3.13 | Python 3.14 |
+| ------------------ | :---------: | :---------: | :---------: | :---------: |
+| `1.21.0` (floor)   | ✅ tested   |             |             |             |
+| `1.24.0`           | ✅ tested   |             |             |             |
+| `latest 1.x`       | ✅ tested   | ✅ tested   |             |             |
+| `2.x` (`>=2,<3`)   |             |             | ✅ tested   | ✅ tested   |
 
 The version pin in `pyproject.toml` is interpreter-aware:
 `azure-functions>=1.21.0,<2.0.0` on Python < 3.13, and `azure-functions>=1.21.0,<3.0.0`
diff --git a/README.zh-CN.md b/README.zh-CN.md
index 634d32a6..a08a75e7 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -4,7 +4,7 @@
 
 [![PyPI](https://img.shields.io/pypi/v/azure-functions-openapi.svg)](https://pypi.org/project/azure-functions-openapi/)
 [![Downloads](https://static.pepy.tech/badge/azure-functions-openapi/month)](https://pepy.tech/project/azure-functions-openapi)
-[![Python Version](https://img.shields.io/badge/python-3.10%20%7C%203.11%20%7C%203.12%20%7C%203.13%20%7C%203.14-blue)](https://pypi.org/project/azure-functions-openapi/)
+[![Python Version](https://img.shields.io/badge/python-3.11%20%7C%203.12%20%7C%203.13%20%7C%203.14-blue)](https://pypi.org/project/azure-functions-openapi/)
 [![CI](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/ci-test.yml/badge.svg)](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/ci-test.yml)
 [![Release](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/publish-pypi.yml/badge.svg)](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/publish-pypi.yml)
 [![Security Scans](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/security.yml/badge.svg)](https://github.com/yeongseon/azure-functions-openapi-python/actions/workflows/security.yml)
@@ -140,12 +140,12 @@ azure-functions-openapi
 
 本包通过单一隔离适配器（`azure_functions_openapi.adapters`）从 `azure-functions` SDK 发现路由、方法和处理器。发现采用 **公共 API 优先** 策略：通过公共、幂等的 `FunctionBuilder.build()` 枚举，其余内容均通过公共 `Function` 访问器（`get_function_name` / `get_user_function` / `get_bindings` / `is_http_function`）读取。适配器绝不调用非幂等的 `FunctionApp.get_functions()`。枚举时没有公共替代方案的 **唯一** 非公开令牌 `app._function_builders` 仅驻留在适配器内部，并由强制守卫测试覆盖。我们在 CI 中使用明确的矩阵进行验证。背景请参阅 [问题 #258](https://github.com/yeongseon/azure-functions-openapi-python/issues/258) 和 [问题 #327](https://github.com/yeongseon/azure-functions-openapi-python/issues/327)。
 
-| `azure-functions` | Python 3.10 | Python 3.11 | Python 3.12 | Python 3.13 | Python 3.14 |
-| ----------------- | :---------: | :---------: | :---------: | :---------: | :---------: |
-| `1.21.0`（下限）  | ✅ 已测试 |             |             |             |             |
-| `1.24.0`          | ✅ 已测试 |             |             |             |             |
-| `latest 1.x`      | ✅ 已测试 | ✅ 已测试 | ✅ 已测试 |           |           |
-| `2.x` (`>=2,<3`)  |           |           |           | ✅ 已测试 | ✅ 已测试 |
+| `azure-functions` | Python 3.11 | Python 3.12 | Python 3.13 | Python 3.14 |
+| ----------------- | :---------: | :---------: | :---------: | :---------: |
+| `1.21.0`（下限）  | ✅ 已测试 |             |             |             |
+| `1.24.0`          | ✅ 已测试 |             |             |             |
+| `latest 1.x`      | ✅ 已测试 | ✅ 已测试 |           |           |
+| `2.x` (`>=2,<3`)  |           |           | ✅ 已测试 | ✅ 已测试 |
 
 `pyproject.toml` 中的版本锁定与解释器相关：在 Python < 3.13 上为 `azure-functions>=1.21.0,<2.0.0`，在 Python 3.13+ 上为 `azure-functions>=1.21.0,<3.0.0`（挡住未认证的 `azure-functions` 3.x）。下限为 `1.21.0` 是因为更早的版本会从 `FunctionBuilder.__call__` 返回 `None`（会破坏测试和 CLI 提取中对装饰处理器的直接调用）。之所以拆分，是因为 `azure-functions` 2.x 放弃了对 Python < 3.13 的支持，因此 2.x 系列仅在 Python 3.13+ 上可安装和提供。2.x 路径已通过 CI 中专用的基于 wheel 的兼容性矩阵（真实的 Python 3.13 和 3.14 解释器）以及真实 Azure 认证 —— 部署在 koreacentral Flex Consumption 计划上的 Python 3.13 Function App —— 得到验证。解除上限的相关工作请参阅 [问题 #528](https://github.com/yeongseon/azure-functions-openapi-python/issues/528) 和 [问题 #488](https://github.com/yeongseon/azure-functions-openapi-python/issues/488)。
 
diff --git a/SUPPORT.md b/SUPPORT.md
index f3a81fcf..86c8bd14 100644
--- a/SUPPORT.md
+++ b/SUPPORT.md
@@ -2,7 +2,7 @@
 
 ## Supported Environment
 
-* Python: 3.10 and above
+* Python: 3.11 and above
 * Runtime: Azure Functions (Python)
 
 ## Support Scope
diff --git a/docs/assets/screenshots.yml b/docs/assets/screenshots.yml
index b22f0918..e867f8fe 100644
--- a/docs/assets/screenshots.yml
+++ b/docs/assets/screenshots.yml
@@ -10,7 +10,7 @@ screenshots:
   source:
     inputs:
     - examples/report_jobs/function_app.py
-    hash: sha256:06a1bef69c8635a8825562e48302c694b7f9be4b037259e0d417a22e82f90d9d
+    hash: sha256:dcf095b8a97e9e01cf944cd9f3f60f4303056a52c30cc52f50ad523c890aa574
   output:
     hash: sha256:aec622c63df0425f60a47b36551fc79853df805ff77732594340058119d78b72
 - id: deployment_report_jobs_swagger_ui
@@ -23,7 +23,7 @@ screenshots:
   source:
     inputs:
     - examples/report_jobs/function_app.py
-    hash: sha256:06a1bef69c8635a8825562e48302c694b7f9be4b037259e0d417a22e82f90d9d
+    hash: sha256:dcf095b8a97e9e01cf944cd9f3f60f4303056a52c30cc52f50ad523c890aa574
   output:
     hash: sha256:579ee7357acd04644926b7861e7129775553df4ffb1b67b9149b46384d0b4296
 - id: notification_request_swagger_ui
@@ -36,7 +36,7 @@ screenshots:
   source:
     inputs:
     - examples/notification_request/function_app.py
-    hash: sha256:fb2c2957bb56f0d199a2ca17c24923bfa8cd3844c79968d7c46ca9fc99225fa7
+    hash: sha256:805b60b099a34b4d097bea88768d9582957878ae9661ee85bec559357561296a
   output:
     hash: sha256:f8ef5429b57db07e9c222de5d978c114f76f345c84d19774ba2b8e74a016c522
 - id: partner_import_bridge_swagger_ui
@@ -49,7 +49,7 @@ screenshots:
   source:
     inputs:
     - examples/partner_import_bridge/function_app.py
-    hash: sha256:c8319c9917e1018b10e925c98a0943789cda4ba2bd577c4d1387388287aa10cf
+    hash: sha256:937af8dbe86f743008c734295b80e5ca9854f5c8c8cd19cb16bc78b7aa7ddee6
   output:
     hash: sha256:9f9f204a5e5028e875e4446fdd738b83e04de7a7cb17b880d69a9ab4122d0986
 - id: webhook_receiver_openapi_spec_preview
@@ -62,7 +62,7 @@ screenshots:
   source:
     inputs:
     - examples/webhook_receiver/function_app.py
-    hash: sha256:e3b582c65610a9c235c8da3584ae2efd1848aee25d7056b6672742d7b1068615
+    hash: sha256:826e24b8ac3f42e7d61e0a40c5b53d40f604460e298e2e34ee2b471d92a95106
   output:
     hash: sha256:ecb270e3c9dd74fc55c99b67776e2c5b48e65f6be019cb6265715cd54cd03900
 - id: webhook_receiver_openapi_swagger_ui_preview
@@ -75,7 +75,7 @@ screenshots:
   source:
     inputs:
     - examples/webhook_receiver/function_app.py
-    hash: sha256:e3b582c65610a9c235c8da3584ae2efd1848aee25d7056b6672742d7b1068615
+    hash: sha256:826e24b8ac3f42e7d61e0a40c5b53d40f604460e298e2e34ee2b471d92a95106
   output:
     hash: sha256:42658bfeeffab7caa4815a4d1588361f39ae4975434a4214ef5af5d3a281a0c8
 - id: webhook_receiver_swagger_ui
@@ -88,7 +88,7 @@ screenshots:
   source:
     inputs:
     - examples/webhook_receiver/function_app.py
-    hash: sha256:e3b582c65610a9c235c8da3584ae2efd1848aee25d7056b6672742d7b1068615
+    hash: sha256:826e24b8ac3f42e7d61e0a40c5b53d40f604460e298e2e34ee2b471d92a95106
   output:
     hash: sha256:5bdb7901a647ce5e15fc9ad439742160c04a5c46f655c627106b5e2856a644f0
 - id: e2e_app_swagger_ui
diff --git a/docs/contributing.md b/docs/contributing.md
index 48401aab..f6618045 100644
--- a/docs/contributing.md
+++ b/docs/contributing.md
@@ -83,7 +83,7 @@ Describe what changed and why. Reference related issues with `Fixes #N` or `Clos
 ### Review process
 
 - At least one approval is required before merging.
-- CI must pass on all Python versions (3.10 -- 3.14).
+- CI must pass on all Python versions (3.11 -- 3.14).
 - Merge with "Squash and merge" to keep the commit history clean.
 
 ## Code Style
@@ -97,7 +97,7 @@ Describe what changed and why. Reference related issues with `Fixes #N` or `Clos
 ### Type annotations
 
 - All public functions must have complete type annotations.
-- Use Python 3.10+ syntax (PEP 604 `X | Y`, PEP 585 `list[T]`).
+- Use Python 3.11+ syntax.
 - `mypy` strict mode is enforced in CI.
 
 ### Naming conventions
diff --git a/docs/deployment.md b/docs/deployment.md
index faee469d..0ecd500f 100644
--- a/docs/deployment.md
+++ b/docs/deployment.md
@@ -45,7 +45,7 @@ In this guide, you deploy example apps that provide:
 | Azure account | [portal.azure.com](https://portal.azure.com) | [Create free account](https://azure.microsoft.com/free/) |
 | Azure CLI | `az --version` | [Install Azure CLI](https://learn.microsoft.com/cli/azure/install-azure-cli) |
 | Azure Functions Core Tools v4 | `func --version` | [Install Core Tools](https://learn.microsoft.com/azure/azure-functions/functions-run-local#install-the-azure-functions-core-tools) |
-| Python 3.10-3.13 | `python3 --version` | [python.org](https://www.python.org/downloads/) |
+| Python 3.11-3.14 | `python3 --version` | [python.org](https://www.python.org/downloads/) |
 | Package examples available | `ls examples` | Clone this repo again if missing |
 | Local example works | `func start` + local `curl` | See [README](https://github.com/yeongseon/azure-functions-openapi-python/blob/main/README.md) |
 
diff --git a/docs/development.md b/docs/development.md
index fcdae1dc..2869b289 100644
--- a/docs/development.md
+++ b/docs/development.md
@@ -6,7 +6,7 @@ This guide covers how to set up a local development environment, run tests, and
 
 ## Prerequisites
 
-- **Python 3.10+** installed on your system
+- **Python 3.11+** installed on your system
 - **Git** for version control
 - **Hatch** as the build and environment manager (installed via `pip install hatch`)
 - **Make** for running the provided Makefile targets
@@ -144,7 +144,7 @@ Use these as the **golden commands** for local validation and CI parity. Prefer
 
 ## Tips
 
-- Ensure you're using Python 3.10+.
+- Ensure you're using Python 3.11+.
 - Use `make check-all` before committing to validate your changes.
 - Prefer `make` commands to ensure consistent dev experience across platforms.
 - Follow [Conventional Commits](https://www.conventionalcommits.org/) for proper changelog generation.
diff --git a/docs/getting-started.md b/docs/getting-started.md
index d61a2bb9..db1e0454 100644
--- a/docs/getting-started.md
+++ b/docs/getting-started.md
@@ -10,7 +10,7 @@ This quickstart takes you from zero to a working Azure Functions API with:
 
 Before you begin, make sure you have:
 
-- Python 3.10+
+- Python 3.11+
 - Azure Functions Core Tools v4
 - An Azure Functions Python v2 app (`func.FunctionApp`)
 
diff --git a/docs/index.md b/docs/index.md
index 6f8de54d..c5f95c52 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -128,7 +128,7 @@ Generate programmatically with:
 
 | Component | Supported |
 | --- | --- |
-| Python | 3.10 to 3.14 |
+| Python | 3.11 to 3.14 |
 | Azure Functions model | Python v2 (`func.FunctionApp`) |
 | OpenAPI versions | 3.0.0, 3.1.0, and 3.2.0 |
 | Pydantic | v2 (≥2.0) |
diff --git a/docs/installation.md b/docs/installation.md
index f67b95c5..2ab670b8 100644
--- a/docs/installation.md
+++ b/docs/installation.md
@@ -4,7 +4,7 @@
 
 | Dependency | Version |
 | --- | --- |
-| Python | 3.10 -- 3.14 |
+| Python | 3.11 -- 3.14 |
 | Azure Functions Core Tools | Latest stable |
 | Azure Functions programming model | v2 (`func.FunctionApp` with decorators) |
 
diff --git a/docs/testing.md b/docs/testing.md
index b27a3023..3597cc1c 100644
--- a/docs/testing.md
+++ b/docs/testing.md
@@ -51,11 +51,11 @@ hatch run pytest -k "security" -v
 
 ## Coverage Policy
 
-- CI runs tests on Python **3.10 through 3.14**.
+- CI runs tests on Python **3.11 through 3.14**.
 - All matrix versions are **required** -- no allow-fail entries.
 - Python 3.14 is treated as stable support, not preview.
 - Coverage report is generated as `coverage.xml`.
-- Codecov upload runs in CI for the Python 3.10 job.
+- Codecov upload runs in CI for the Python 3.11 job.
 
 ### Coverage thresholds
 
@@ -233,7 +233,7 @@ The CI workflow runs:
 4. `make security` -- Bandit security scan
 
 All four steps must pass for a PR to be mergeable. The matrix covers
-Python 3.10, 3.11, 3.12, 3.13, and 3.14.
+Python 3.11, 3.12, 3.13, and 3.14.
 
 ## Real Azure E2E Tests
 
diff --git a/examples/notification_request/function_app.py b/examples/notification_request/function_app.py
index 054154a5..f21e8d2d 100644
--- a/examples/notification_request/function_app.py
+++ b/examples/notification_request/function_app.py
@@ -9,7 +9,7 @@
 
 from __future__ import annotations
 
-from datetime import datetime, timezone
+from datetime import UTC, datetime
 import logging
 import uuid
 
@@ -98,7 +98,7 @@ def send_notification(
     entry = {
         "notification_id": notification_id,
         "status": "queued",
-        "queued_at": datetime.now(timezone.utc).isoformat(),
+        "queued_at": datetime.now(UTC).isoformat(),
     }
     _notifications[notification_id] = entry
 
diff --git a/examples/partner_import_bridge/function_app.py b/examples/partner_import_bridge/function_app.py
index 725d03a7..c376bcf2 100644
--- a/examples/partner_import_bridge/function_app.py
+++ b/examples/partner_import_bridge/function_app.py
@@ -10,7 +10,7 @@
 
 from __future__ import annotations
 
-from datetime import datetime, timezone
+from datetime import UTC, datetime
 import json
 import logging
 from typing import Any
@@ -103,7 +103,7 @@ def import_partners(req: func.HttpRequest, body: ImportBatchRequest) -> ImportBa
         "imported": imported,
         "skipped": skipped,
         "status": "dry_run" if body.dry_run else "completed",
-        "created_at": datetime.now(timezone.utc).isoformat(),
+        "created_at": datetime.now(UTC).isoformat(),
     }
     _import_history.append(entry)
 
diff --git a/examples/report_jobs/function_app.py b/examples/report_jobs/function_app.py
index abcd1c8a..8217fb2f 100644
--- a/examples/report_jobs/function_app.py
+++ b/examples/report_jobs/function_app.py
@@ -11,8 +11,8 @@
 
 from __future__ import annotations
 
-from datetime import datetime, timezone
-from enum import Enum
+from datetime import UTC, datetime
+from enum import StrEnum
 import json
 import logging
 from typing import Any
@@ -39,7 +39,7 @@
 # ---------------------------------------------------------------------------
 
 
-class ReportFormat(str, Enum):
+class ReportFormat(StrEnum):
     csv = "csv"
     pdf = "pdf"
     xlsx = "xlsx"
@@ -149,7 +149,7 @@ def submit_report(req: func.HttpRequest) -> func.HttpResponse:
     job = {
         "job_id": job_id,
         "status": "queued",
-        "created_at": datetime.now(timezone.utc).isoformat(),
+        "created_at": datetime.now(UTC).isoformat(),
         "request": body,
         "progress_pct": 0,
         "download_url": None,
diff --git a/examples/webhook_receiver/function_app.py b/examples/webhook_receiver/function_app.py
index fb3c7117..87f70248 100644
--- a/examples/webhook_receiver/function_app.py
+++ b/examples/webhook_receiver/function_app.py
@@ -9,7 +9,7 @@
 
 from __future__ import annotations
 
-from datetime import datetime, timezone
+from datetime import UTC, datetime
 import hashlib
 import hmac
 import json
@@ -129,7 +129,7 @@ def receive_order_webhook(req: func.HttpRequest) -> func.HttpResponse:
                     mimetype="application/json",
                     status_code=401,
                 )
-            age = (datetime.now(timezone.utc) - ts).total_seconds()
+            age = (datetime.now(UTC) - ts).total_seconds()
             if abs(age) > _MAX_WEBHOOK_AGE_SECONDS:
                 logger.warning("Webhook timestamp too old: %s (age=%.0fs)", timestamp, age)
                 return func.HttpResponse(
@@ -186,7 +186,7 @@ def receive_order_webhook(req: func.HttpRequest) -> func.HttpResponse:
     entry = {
         "delivery_id": f"dlv_{uuid.uuid4().hex[:12]}",
         "status": "accepted",
-        "received_at": datetime.now(timezone.utc).isoformat(),
+        "received_at": datetime.now(UTC).isoformat(),
     }
     _recent_deliveries.append(entry)
 
diff --git a/infra/main.bicep b/infra/main.bicep
index 0ad44029..51325fae 100644
--- a/infra/main.bicep
+++ b/infra/main.bicep
@@ -1,7 +1,7 @@
 // infra/main.bicep
 // Minimal Azure resources for e2e testing.
 // Creates: Storage Account + Function App on a Flex Consumption (FC1) plan,
-// Linux/Python, version selectable via the pythonVersion parameter (default 3.11).
+// Linux/Python, version selectable via the pythonVersion parameter (default 3.12).
 // Optionally creates Application Insights (enableAppInsights=true).
 //
 // Flex Consumption (not the classic Y1 Consumption plan) is required because
@@ -29,7 +29,7 @@ param enableAppInsights bool = false
 param appInsightsName string = '${functionAppName}-ai'
 
 @description('Python runtime version for the Flex Consumption Function App (e.g. 3.11, 3.13).')
-param pythonVersion string = '3.11'
+param pythonVersion string = '3.12'
 
 @description('Per-instance memory (MB) for the Flex Consumption app.')
 param instanceMemoryMB int = 2048
diff --git a/llms-full.txt b/llms-full.txt
index 5f405af4..b01528cc 100644
--- a/llms-full.txt
+++ b/llms-full.txt
@@ -6,7 +6,7 @@
 
 - PyPI: `pip install azure-functions-openapi`
 - Version: 0.27.0
-- Python: >=3.10, <3.15
+- Python: >=3.11, <3.15
 - License: MIT
 - Docs: https://yeongseon.dev/azure-functions-python/openapi/
 - Repository: https://github.com/yeongseon/azure-functions-openapi-python
diff --git a/llms.txt b/llms.txt
index cdda6502..09655a85 100644
--- a/llms.txt
+++ b/llms.txt
@@ -6,7 +6,7 @@
 
 - PyPI: `pip install azure-functions-openapi`
 - Version: 0.27.0
-- Python: >=3.10, <3.15
+- Python: >=3.11, <3.15
 - License: MIT
 - Docs: https://yeongseon.dev/azure-functions-python/openapi/
 - Repository: https://github.com/yeongseon/azure-functions-openapi-python
diff --git a/pyproject.toml b/pyproject.toml
index b3c14fad..74265f18 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,14 +5,13 @@ keywords = ["azure-functions", "azure", "python", "v2", "openapi", "swagger", "r
 authors = [{ name = "Yeongseon Choe", email = "yeongseon.choe@gmail.com" }]
 license = { text = "MIT" }
 readme = "README.md"
-requires-python = ">=3.10,<3.15"
+requires-python = ">=3.11,<3.15"
 dynamic = ["version"]
 classifiers = [
     "Development Status :: 4 - Beta",
     "Intended Audience :: Developers",
     "License :: OSI Approved :: MIT License",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
@@ -98,7 +97,7 @@ url = "https://upload.pypi.org/legacy/"
 url = "https://test.pypi.org/legacy/"
 
 [tool.hatch.envs.default]
-python = "3.10"
+python = "3.11"
 features = ["dev", "docs"]
 
 [tool.hatch.envs.default.scripts]
@@ -117,12 +116,12 @@ security = "python -m bandit -r src"
 
 [tool.ruff]
 line-length = 100
-target-version = "py310"
+target-version = "py311"
 
 [tool.ruff.lint]
 # C4 + UP keep the codebase on modern syntax (PEP 585/604 generics and
-# unions, comprehension forms) instead of the pre-3.10 `typing.List` /
-# `Optional[...]` spellings. target-version = "py310" bounds every fix to
+# unions, comprehension forms) instead of the legacy `typing.List` /
+# `Optional[...]` spellings. target-version = "py311" bounds every fix to
 # syntax the declared floor supports.
 select = ["C4", "E", "F", "I", "UP"]
 fixable = ["ALL"]
@@ -133,7 +132,7 @@ force-sort-within-sections = true
 section-order = ["future", "standard-library", "third-party", "first-party", "local-folder"]
 
 [tool.mypy]
-python_version = "3.10"
+python_version = "3.11"
 strict = true
 ignore_missing_imports = true
 show_error_codes = true
diff --git a/scripts/check_screenshots.py b/scripts/check_screenshots.py
index b5afd1bc..da3fb5c2 100644
--- a/scripts/check_screenshots.py
+++ b/scripts/check_screenshots.py
@@ -45,7 +45,7 @@
 # artifact or its manifest. Kept deliberately narrow to avoid false positives on
 # ordinary docs content; reviewed, known-safe matches can be exempted via the
 # manifest-level ``secret_scan_allow`` list (substring match).
-_SECRET_PATTERNS: tuple[tuple[str, "re.Pattern[str]"], ...] = (
+_SECRET_PATTERNS: tuple[tuple[str, re.Pattern[str]], ...] = (
     (
         "azure subscription id",
         re.compile(
@@ -102,7 +102,8 @@ def _combined_source_hash(inputs: list[str]) -> str:
 
 
 def _image_hash(rel: str) -> str:
-    return "sha256:" + hashlib.sha256((REPO_ROOT / rel).read_bytes()).hexdigest()
+    with (REPO_ROOT / rel).open("rb") as image:
+        return "sha256:" + hashlib.file_digest(image, "sha256").hexdigest()
 
 
 def _load_manifest(path: Path) -> dict[str, Any]:
diff --git a/src/azure_functions_openapi/__init__.py b/src/azure_functions_openapi/__init__.py
index 6f81b067..2fb24e99 100644
--- a/src/azure_functions_openapi/__init__.py
+++ b/src/azure_functions_openapi/__init__.py
@@ -1,7 +1,4 @@
 # src/azure_functions_openapi/__init__.py
-import sys
-import warnings
-
 from azure_functions_openapi._warnings import SpecWarning, WarningCode
 import azure_functions_openapi.bridge as _bridge
 from azure_functions_openapi.decorator import (
@@ -51,13 +48,3 @@
     "scan_endpoint_metadata",
     "scan_validation_metadata",
 ]
-
-
-if sys.version_info < (3, 11):
-    warnings.warn(
-        "azure-functions-openapi will drop support for Python 3.10 in its next minor release. "
-        "Python 3.10 reaches end of life in October 2026; upgrade to Python 3.11 "
-        "or newer to keep receiving updates.",
-        FutureWarning,
-        stacklevel=2,
-    )
diff --git a/src/azure_functions_openapi/_warnings.py b/src/azure_functions_openapi/_warnings.py
index 8aedeb53..5415e59d 100644
--- a/src/azure_functions_openapi/_warnings.py
+++ b/src/azure_functions_openapi/_warnings.py
@@ -16,14 +16,13 @@
 from __future__ import annotations
 
 from dataclasses import dataclass
-from enum import Enum
+from enum import StrEnum
 
 
-class WarningCode(str, Enum):
+class WarningCode(StrEnum):
     """Stable identifiers for structured spec-generation warnings.
 
-    Inherits from ``str`` (rather than :class:`enum.StrEnum`, which is 3.11+) so
-    the codes serialise as plain strings on Python 3.10+.
+    Codes serialise as plain strings on Python 3.11+.
     """
 
     VERSION_SKEW = "version-skew"
diff --git a/tests/test_hello_openapi_function_app.py b/tests/test_hello_openapi_function_app.py
index 0a7edd9a..cb3161fb 100644
--- a/tests/test_hello_openapi_function_app.py
+++ b/tests/test_hello_openapi_function_app.py
@@ -1,7 +1,7 @@
 # tests/test_webhook_receiver_example.py
 # (file kept as test_hello_openapi_function_app.py so CI mapping stays stable)
 
-from datetime import datetime, timedelta, timezone
+from datetime import UTC, datetime, timedelta
 import hashlib
 import hmac
 import importlib
@@ -115,7 +115,7 @@ def test_receive_webhook_signature_valid() -> None:
         }
     ).encode("utf-8")
     secret = "test-secret"
-    timestamp = datetime.now(timezone.utc).isoformat()
+    timestamp = datetime.now(UTC).isoformat()
     sig = _make_signature(payload, timestamp, secret)
 
     req = func.HttpRequest(
@@ -138,7 +138,7 @@ def test_receive_webhook_signature_valid() -> None:
 
 def test_receive_webhook_signature_invalid() -> None:
     fa = _load_example_module()
-    timestamp = datetime.now(timezone.utc).isoformat()
+    timestamp = datetime.now(UTC).isoformat()
     req = func.HttpRequest(
         method="POST",
         url="/api/webhooks/orders",
@@ -194,7 +194,7 @@ def test_receive_webhook_stale_timestamp() -> None:
     """Webhooks older than 5 minutes are rejected."""
     fa = _load_example_module()
     secret = "test-secret"
-    old_timestamp = (datetime.now(timezone.utc) - timedelta(minutes=10)).isoformat()
+    old_timestamp = (datetime.now(UTC) - timedelta(minutes=10)).isoformat()
     payload = json.dumps(
         {
             "event_type": "order.completed",
diff --git a/tests/test_python_310_deprecation.py b/tests/test_python_310_deprecation.py
deleted file mode 100644
index 3b725203..00000000
--- a/tests/test_python_310_deprecation.py
+++ /dev/null
@@ -1,24 +0,0 @@
-"""Python 3.10 is deprecated ahead of its removal in the next minor release."""
-
-from __future__ import annotations
-
-import importlib
-import sys
-import warnings
-
-import pytest
-
-import azure_functions_openapi
-
-
-def test_warns_on_python_310(monkeypatch: pytest.MonkeyPatch) -> None:
-    monkeypatch.setattr(sys, "version_info", (3, 10, 0, "final", 0))
-    with pytest.warns(FutureWarning, match="drop support for Python 3.10"):
-        importlib.reload(azure_functions_openapi)
-
-
-def test_silent_on_python_311(monkeypatch: pytest.MonkeyPatch) -> None:
-    monkeypatch.setattr(sys, "version_info", (3, 11, 0, "final", 0))
-    with warnings.catch_warnings():
-        warnings.simplefilter("error", FutureWarning)
-        importlib.reload(azure_functions_openapi)
diff --git a/tests/test_python_version_metadata.py b/tests/test_python_version_metadata.py
new file mode 100644
index 00000000..02067caf
--- /dev/null
+++ b/tests/test_python_version_metadata.py
@@ -0,0 +1,104 @@
+from __future__ import annotations
+
+from email.parser import BytesParser
+from pathlib import Path
+import subprocess
+import sys
+import tarfile
+import tomllib
+from zipfile import ZipFile
+
+from packaging.specifiers import SpecifierSet
+import pytest
+
+PROJECT_ROOT = Path(__file__).resolve().parents[1]
+SUPPORTED_PYTHON = SpecifierSet(">=3.11,<3.15")
+
+
+@pytest.fixture(scope="module")
+def built_metadata(tmp_path_factory: pytest.TempPathFactory) -> tuple[str, str]:
+    # Given isolated output for both distribution formats
+    output = tmp_path_factory.mktemp("dist")
+
+    # When the project builds its wheel and source distribution
+    subprocess.run(
+        [sys.executable, "-m", "build", "--outdir", str(output)],
+        cwd=PROJECT_ROOT,
+        check=True,
+    )
+
+    # Then expose the metadata embedded in each artifact
+    wheel = next(output.glob("*.whl"))
+    with ZipFile(wheel) as archive:
+        wheel_metadata_name = next(
+            name for name in archive.namelist() if name.endswith(".dist-info/METADATA")
+        )
+        wheel_metadata = archive.read(wheel_metadata_name).decode()
+    sdist = next(output.glob("*.tar.gz"))
+    with tarfile.open(sdist) as archive:
+        pkg_info = next(
+            member for member in archive.getmembers() if member.name.endswith("/PKG-INFO")
+        )
+        extracted = archive.extractfile(pkg_info)
+        assert extracted is not None
+        sdist_metadata = extracted.read().decode()
+    return wheel_metadata, sdist_metadata
+
+
+def test_requires_python_declares_supported_range() -> None:
+    # Given the source package metadata
+    project = tomllib.loads((PROJECT_ROOT / "pyproject.toml").read_text(encoding="utf-8"))[
+        "project"
+    ]
+
+    # When the declared Python range is parsed semantically
+    declared = SpecifierSet(project["requires-python"])
+
+    # Then the complete normalized range is exactly the supported range
+    assert declared == SUPPORTED_PYTHON
+
+
+@pytest.mark.parametrize(
+    "mutant",
+    [">=3.11,<3.14.1", ">=3.11,<3.15,!=3.12.5"],
+    ids=["narrow-upper-bound", "excluded-patch"],
+)
+def test_supported_range_rejects_semantically_different_mutants(mutant: str) -> None:
+    # Given a range that agrees at each supported minor's .0 release
+    mutated = SpecifierSet(mutant)
+
+    # When the complete normalized range is compared
+    # Then hidden boundary and interior exclusions are rejected
+    assert mutated != SUPPORTED_PYTHON
+
+
+def test_classifiers_match_supported_python_minors() -> None:
+    # Given the source package metadata
+    project = tomllib.loads((PROJECT_ROOT / "pyproject.toml").read_text(encoding="utf-8"))[
+        "project"
+    ]
+
+    # When version-specific Python classifiers are selected
+    prefix = "Programming Language :: Python :: 3."
+    classified_minors = {
+        classifier.removeprefix(prefix)
+        for classifier in project["classifiers"]
+        if classifier.startswith(prefix)
+    }
+
+    # Then every and only supported minor version is advertised
+    assert classified_minors == {"11", "12", "13", "14"}
+
+
+@pytest.mark.parametrize("artifact_index", [0, 1], ids=["wheel", "sdist"])
+def test_built_artifact_requires_python_matches_supported_range(
+    built_metadata: tuple[str, str], artifact_index: int
+) -> None:
+    # Given metadata from a built wheel or source distribution
+    metadata = BytesParser().parsebytes(built_metadata[artifact_index].encode())
+
+    # When its Python requirement is parsed semantically
+    declared = SpecifierSet(metadata["Requires-Python"])
+
+    # Then the complete normalized range is exactly the supported range
+    assert declared == SUPPORTED_PYTHON
diff --git a/tests/test_sdk_compat_adapter.py b/tests/test_sdk_compat_adapter.py
index fb3d1d3c..fbd049bc 100644
--- a/tests/test_sdk_compat_adapter.py
+++ b/tests/test_sdk_compat_adapter.py
@@ -4,7 +4,7 @@
 through :mod:`azure_functions_openapi.adapters.azure_functions`. This module
 pins that contract against the *installed* SDK so the CI matrix proves the
 package works on every supported line: ``azure-functions`` 1.21 → latest 1.x
-on Python 3.10–3.12, and the 2.x line on Python 3.13+ (the wheel-based compat
+on Python 3.11–3.12, and the 2.x line on Python 3.13+ (the wheel-based compat
 matrix in ci-test.yml).
 
 Verified support matrix (enforced by CI; see the interpreter-aware
@@ -12,9 +12,9 @@
 
     azure-functions | Python
     --------------- | ----------------------------
-    1.21.0 (floor)  | 3.10
-    1.24.0          | 3.10
-    latest (<2.0)   | 3.10, 3.11, 3.12
+1.21.0 (floor)  | 3.11
+1.24.0          | 3.11
+latest (<2.0)   | 3.11, 3.12
     2.x (>=2,<3)    | 3.13, 3.14
 
 Three guarantees are asserted here:
diff --git a/tests/test_spec_warnings.py b/tests/test_spec_warnings.py
index 0b1c2183..c63a67a1 100644
--- a/tests/test_spec_warnings.py
+++ b/tests/test_spec_warnings.py
@@ -128,9 +128,18 @@ def _isolate_registry() -> Any:
 
 
 class TestSpecWarning:
-    def test_warning_code_serialises_as_plain_string(self) -> None:
+    def test_warning_code_value_is_stable(self) -> None:
         assert WarningCode.VERSION_SKEW.value == "version-skew"
 
+    def test_warning_code_string_forms_are_stable(self) -> None:
+        assert str(WarningCode.VERSION_SKEW) == "version-skew"
+        assert f"{WarningCode.VERSION_SKEW}" == "version-skew"
+
+    def test_warning_code_remains_string_compatible(self) -> None:
+        code: str = WarningCode.VERSION_SKEW
+        assert code == "version-skew"
+        assert json.dumps({"code": WarningCode.VERSION_SKEW}) == '{"code": "version-skew"}'
+
     def test_to_dict_is_json_serialisable(self) -> None:
         warning = SpecWarning(
             code=WarningCode.VERSION_SKEW,
diff --git a/tests/test_typed_parameters.py b/tests/test_typed_parameters.py
index 66e385cc..58d83688 100644
--- a/tests/test_typed_parameters.py
+++ b/tests/test_typed_parameters.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from datetime import datetime
-from enum import Enum
+from enum import StrEnum
 import json
 from typing import Literal
 
@@ -20,7 +20,7 @@
 from azure_functions_openapi.spec import generate_openapi_spec
 
 
-class Color(str, Enum):
+class Color(StrEnum):
     red = "red"
     blue = "blue"