diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index f6a9f65a3c7..0fe3ff95485 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -23,7 +23,7 @@ jobs:
         os:
           - ubuntu-24.04
         python-version:
-          - "3.10"
+          - "3.11"
           - "3.13"
       fail-fast: true
 
diff --git a/.github/workflows/python-code-quality.yml b/.github/workflows/python-code-quality.yml
index e68a535967b..a3c4d440c90 100644
--- a/.github/workflows/python-code-quality.yml
+++ b/.github/workflows/python-code-quality.yml
@@ -28,7 +28,7 @@ jobs:
     env:
       # renovate: datasource=python-version depName=python
       PYTHON_VERSION: "3.14"
-      MIN_PYTHON_VERSION: "3.10"
+      MIN_PYTHON_VERSION: "3.11"
       # renovate: datasource=pypi depName=flake8
       FLAKE8_VERSION: "7.3.0"
       # renovate: datasource=pypi depName=pylint
@@ -111,8 +111,7 @@ jobs:
           pipx install "flake8==${FLAKE8_VERSION}"
           pipx install "pylint==${PYLINT_VERSION}"
           pipx inject pylint -r .github/workflows/python_requirements.txt -r .github/workflows/optional_requirements.txt
-          # The extra toml is only needed before Python 3.11
-          pipx install "bandit[sarif,toml]==${BANDIT_VERSION}"
+          pipx install "bandit[sarif]==${BANDIT_VERSION}"
 
       - name: Run Flake8
         run: |
diff --git a/REQUIREMENTS.md b/REQUIREMENTS.md
index 583690b07d9..5f20b381b51 100644
--- a/REQUIREMENTS.md
+++ b/REQUIREMENTS.md
@@ -34,7 +34,7 @@ for other platforms you may have to install some of them.
 - **GDAL/OGR >= 3.7** for import and export of most external raster and
   vector map formats
   GDAL: [https://gdal.org](https://gdal.org)
-- **Python >= 3.10** (for temporal framework, scripts, wxGUI, and ctypes interface)
+- **Python >= 3.11** (for temporal framework, scripts, wxGUI, and ctypes interface)
   [https://www.python.org](https://www.python.org)
 - **MkDocs** with "Material" theme Python packages for the manual pages:
   See `man/mkdocs/requirements.txt`.
diff --git a/lib/init/grass.py b/lib/init/grass.py
index f654b9afcc5..21605f0268c 100755
--- a/lib/init/grass.py
+++ b/lib/init/grass.py
@@ -2439,7 +2439,7 @@ def main() -> None:
         fatal(e.args[0])
         sys.exit(_("Exiting..."))
 
-    start_time = datetime.datetime.now(datetime.timezone.utc)
+    start_time = datetime.datetime.now(datetime.UTC)
 
     # unlock the mapset which is current at the time of turning off
     # in case mapset was changed
diff --git a/pyproject.toml b/pyproject.toml
index 7fce135dedc..b4a922f7fb5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,12 +1,12 @@
 [project]
 name = "grass"
-requires-python = ">=3.10"
+requires-python = ">=3.11"
 # *GRASS TODO: keep in sync with MIN_PYTHON_VERSION supported*
 
 [tool.black]
 line-length = 88
 required-version = '25'
-target-version = ['py310', 'py311', 'py312', 'py313', 'py314']
+target-version = ['py311', 'py312', 'py313', 'py314']
 # 'extend-exclude' excludes files or directories in addition to the defaults
 extend-exclude = '''
 (
@@ -603,7 +603,7 @@ load-plugins = [
 # version used to run pylint.
 # *GRASS modified*
 # *GRASS TODO: keep in sync with MIN_PYTHON_VERSION supported*
-py-version = "3.10"
+py-version = "3.11"
 
 # Add paths to the list of the source roots. Supports globbing patterns. The
 # source root is an absolute path or a path relative to the current working
@@ -880,7 +880,7 @@ include = ["python"]
 
 # *GRASS modified*
 # *GRASS TODO: keep in sync with MIN_PYTHON_VERSION supported*
-pythonVersion = "3.10"
+pythonVersion = "3.11"
 
 [tool.pyrefact]
 line_length = 88
@@ -888,4 +888,4 @@ line_length = 88
 [tool.isort]
 profile = "black"
 # *GRASS TODO: keep in sync with MIN_PYTHON_VERSION supported*
-py_version = 310
+py_version = 311
diff --git a/python/grass/script/setup.py b/python/grass/script/setup.py
index 0102131c423..454bbe5d0e2 100644
--- a/python/grass/script/setup.py
+++ b/python/grass/script/setup.py
@@ -485,7 +485,7 @@ class SessionHandle:
     def __init__(self, *, env, active=True, locked=False):
         self._env = env
         self._active = active
-        self._start_time = datetime.datetime.now(datetime.timezone.utc)
+        self._start_time = datetime.datetime.now(datetime.UTC)
         self._locked = locked
 
     @property
@@ -563,7 +563,7 @@ def clean_default_db(*, modified_after=None, env=None, gis_env=None):
         return
     if modified_after:
         modified_time = datetime.datetime.fromtimestamp(
-            file_stat.st_mtime, tz=datetime.timezone.utc
+            file_stat.st_mtime, tz=datetime.UTC
         )
         if modified_after >= modified_time:
             return
diff --git a/utils/mkdocs.py b/utils/mkdocs.py
index 39e2658016b..a8a7d7848dc 100644
--- a/utils/mkdocs.py
+++ b/utils/mkdocs.py
@@ -208,17 +208,7 @@ def format_git_commit_date_from_local_git(
 
     :return str: output formatted commit datetime
     """
-    try:
-        date = datetime.fromisoformat(
-            commit_datetime,
-        )
-    except ValueError:
-        if commit_datetime.endswith("Z"):
-            # Python 3.10 and older does not support Z in time, while recent versions
-            # of Git (2.45.1) use it. Try to help the parsing if Z is in the string.
-            date = datetime.fromisoformat(commit_datetime[:-1] + "+00:00")
-        else:
-            raise
+    date = datetime.fromisoformat(commit_datetime)
     return date.strftime(datetime_format)