diff --git a/.github/workflows/build-dataframely.yml b/.github/workflows/build-dataframely.yml
new file mode 100644
index 00000000000..fd495c5f382
--- /dev/null
+++ b/.github/workflows/build-dataframely.yml
@@ -0,0 +1,152 @@
+# SPDX-FileCopyrightText: 2026 The RISE Project
+# SPDX-License-Identifier: MIT
+---
+# This workflow is based on: https://github.com/quantco/dataframely/blob/main/.github/workflows/build.yml
+name: Build dataframely wheels (riscv64)
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version glob to (re)build; empty builds every version of docs/packages/dataframely.yaml not released yet'
+        required: false
+        default: ''
+  pull_request:
+    branches: [main]
+    paths:
+      - '.github/workflows/build-dataframely.yml'
+      - 'docs/packages/dataframely.yaml'
+  push:
+    branches: [main]
+    paths:
+      - '.github/workflows/build-dataframely.yml'
+      - 'docs/packages/dataframely.yaml'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read  # to fetch code (actions/checkout)
+
+env:
+  PYTHON_VERSION: '3.10'
+  CARGO_INCREMENTAL: 0
+  CARGO_NET_RETRY: 10
+  RUSTUP_MAX_RETRIES: 10
+  # dataframely's Cargo.toml puts `lto = true` + `codegen-units = 1` directly
+  # on the `release` profile, and pulls in a full pola-rs fork as its crate
+  # graph (see build-polars-runtime.yml). Overridden down the same way for
+  # the same reason: the riscv64 runner cannot afford fat LTO on that graph.
+  CARGO_PROFILE_RELEASE_LTO: 'off'
+  CARGO_PROFILE_RELEASE_CODEGEN_UNITS: '16'
+  CARGO_PROFILE_RELEASE_OPT_LEVEL: '1'
+  CARGO_BUILD_JOBS: '2'
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  setup:
+    uses: $/.github/workflows/_setup.yml
+    with:
+      package: dataframely
+      version: ${{ inputs.version }}
+
+  build_wheels:
+    needs: [setup]
+    if: needs.setup.outputs.versions != '[]'
+    name: Build dataframely ${{ matrix.version }} cp310-abi3-manylinux_riscv64
+    runs-on: ubuntu-24.04-riscv
+    timeout-minutes: 1440
+    strategy:
+      fail-fast: false
+      matrix:
+        version: ${{ fromJSON(needs.setup.outputs.versions) }}
+
+    env:
+      DATAFRAMELY_VERSION: ${{ matrix.version }}
+
+    steps:
+      - name: Checkout dataframely v${{ env.DATAFRAMELY_VERSION }}
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          repository: quantco/dataframely
+          ref: v${{ env.DATAFRAMELY_VERSION }}
+          persist-credentials: false
+
+      # Upstream's own build.yml runs `pixi run -e build set-version`, which
+      # is this same sed against a setuptools_scm-derived string; the target
+      # version is already known here, so it is substituted directly.
+      - name: Set version
+        run: sed -i "s/version = \"0.0.0\"/version = \"${DATAFRAMELY_VERSION}\"/" pyproject.toml
+
+      # Same OOM guard build-polars-runtime.yml needs on these runners for a
+      # comparably sized Rust build (a pinned pola-rs fork).
+      - name: Set swap space
+        uses: pierotofy/set-swap-space@fc79b3f67fa8a838184ce84a674ca12238d2c761  # master
+        with:
+          swap-size-gb: 10
+
+      - name: Build wheel
+        uses: PyO3/maturin-action@e83996d129638aa358a18fbd1dfb82f0b0fb5d3b  # v1.51.0
+        with:
+          command: build
+          target: riscv64gc-unknown-linux-gnu
+          args: --out dist --release -i python3.10 --strip
+          manylinux: '2_39'
+          before-script-linux: git config --global --add safe.directory "*"
+
+      - name: Install Python
+        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d  # v10.0.1
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+          activate-environment: true
+          enable-cache: false
+
+      - name: Test wheel
+        run: |
+          uv pip install --force-reinstall dist/*.whl
+          uv pip install --extra-index-url https://pypi.riseproject.dev/simple/ \
+            pytest pytest-benchmark pytest-mock numpy pandas
+
+          # cd out of the checkout first (gotcha 25/218): dataframely's pure-Python
+          # wrapper package lives directly at the checkout root ($GITHUB_WORKSPACE),
+          # and both `python -c` and `python -m pytest` prepend cwd to sys.path[0]
+          # unconditionally, so run from here they'd import that source tree --
+          # which has no compiled _native extension -- instead of the wheel just
+          # installed above.
+          cd /tmp
+          python -c 'import dataframely; print(dataframely.__version__)'
+          # pyarrow has no cp310 riscv64 wheel yet (registry starts at cp312); this abi3
+          # wheel is cp310+, so skip only the one test module that hard-imports pyarrow.
+          # scikit-learn likewise starts at cp312 on the registry; tests/benches hard-imports
+          # it in its own conftest.py, so skip that whole directory too.
+          python -m pytest "${GITHUB_WORKSPACE}/tests" -c "${GITHUB_WORKSPACE}/pyproject.toml" \
+            -m "not with_optionals" --ignore="${GITHUB_WORKSPACE}/tests/columns/test_arrow_pycapsule.py" \
+            --ignore="${GITHUB_WORKSPACE}/tests/benches"
+
+      - name: Upload wheel
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
+        with:
+          name: dataframely-${{ env.DATAFRAMELY_VERSION }}-cp310-abi3-manylinux_riscv64
+          path: dist/*.whl
+          if-no-files-found: error
+
+  publish:
+    name: Publish dataframely ${{ matrix.version }}
+    needs: [setup, build_wheels]
+    if: needs.setup.outputs.versions != '[]'
+    strategy:
+      fail-fast: false
+      matrix:
+        version: ${{ fromJSON(needs.setup.outputs.versions) }}
+    permissions:
+      contents: write
+      pull-requests: write
+    uses: $/.github/workflows/_publish-wheel.yml
+    secrets:
+      app-private-key: ${{ secrets.RISEPROJECT_APP_PRIVATE_KEY }}
+    with:
+      artifact-pattern: dataframely-${{ matrix.version }}-*-manylinux_riscv64
diff --git a/docs/packages/dataframely.yaml b/docs/packages/dataframely.yaml
new file mode 100644
index 00000000000..cf09563fa2f
--- /dev/null
+++ b/docs/packages/dataframely.yaml
@@ -0,0 +1,5 @@
+package-name: dataframely
+source-code: https://github.com/quantco/dataframely
+license: BSD-3-Clause
+versions:
+- version: 3.0.0