diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 3733c84f6b76..3fd5f92b96ad 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -18,7 +18,7 @@ repos:
         additional_dependencies: ["json5==0.15.0"]
   - repo: https://github.com/astral-sh/ruff-pre-commit
     # The Ruff version must match requirements-tests.txt.
-    rev: c59bba8fb259db0fec2bbb77ad8ba51ea7341b56 # frozen: v0.15.20
+    rev: 2eeb5678de71a00c0902cbda7105d328432f72cb # frozen: v0.16.8
     hooks:
       - id: ruff
         name: Run ruff on stubs, tests and scripts
diff --git a/pyproject.toml b/pyproject.toml
index c3a4fe66b780..bc78b2485265 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -197,6 +197,7 @@ ignore = [
     "PLR5501", # Use `elif` instead of `else` then `if`, to reduce indentation
     # Often just leads to redundant more verbose code when needing an actual str
     "PTH208", # Use `pathlib.Path.iterdir()` instead.
+    "RUF036", # `None` is not at the end of the union
     # Allow FIXME
     "TD001", # Invalid TODO tag: `{tag}`
     # Git blame is sufficient
diff --git a/requirements-tests.txt b/requirements-tests.txt
index 35432cd35afd..2f6af8d04b14 100644
--- a/requirements-tests.txt
+++ b/requirements-tests.txt
@@ -12,7 +12,7 @@ mypy-protobuf==5.1.0; python_version < "3.15"
 packaging==26.2
 pathspec>=1.1.1
 pre-commit
-ruff==0.15.20
+ruff==0.16.8
 # Required by create_baseline_stubs.py.
 # stubdefaulter depends on libcst, which does not yet install cleanly on Python 3.15.
 stubdefaulter==0.1.0; python_version < "3.15"
diff --git a/stubs/reportlab/reportlab/lib/rltempfile.pyi b/stubs/reportlab/reportlab/lib/rltempfile.pyi
index 24b270ff237c..82979cda9478 100644
--- a/stubs/reportlab/reportlab/lib/rltempfile.pyi
+++ b/stubs/reportlab/reportlab/lib/rltempfile.pyi
@@ -1,4 +1,5 @@
 def get_rl_tempdir(*subdirs: str) -> str: ...
 def get_rl_tempfile(fn: str | None = None) -> str: ...
 
-__all__ = ("get_rl_tempdir", "get_rl_tempdir")
+# The duplicate entry matches the runtime __all__.
+__all__ = ("get_rl_tempdir", "get_rl_tempdir")  # noqa: RUF068
diff --git a/stubs/workalendar/workalendar/europe/__init__.pyi b/stubs/workalendar/workalendar/europe/__init__.pyi
index b6abc88df1dc..afaccb646847 100644
--- a/stubs/workalendar/workalendar/europe/__init__.pyi
+++ b/stubs/workalendar/workalendar/europe/__init__.pyi
@@ -249,7 +249,8 @@ __all__ = (
     "Cantabria",
     "ValencianCommunity",
     # Switzerland
-    "Switzerland",
+    # The duplicate entry matches the runtime __all__.
+    "Switzerland",  # noqa: RUF068
     "Aargau",
     "AppenzellInnerrhoden",
     "AppenzellAusserrhoden",