Pipelex · lchoquel · Aug 21, 2026 · Aug 21, 2026
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## [Unreleased]
+
+### Changed
+
+- **Tooling:** Pinned `ruff` to an exact `0.16.4`, replacing the `>=0.6.8` floor. The exact pin matches what the Ruff VS Code extension now bundles, which matters because Ruff 0.16 lints `pyproject.toml` itself: the extension syncs the config file to the language server, and a pre-0.16 binary parses it as Python source and paints phantom `invalid-syntax` diagnostics on lines like `requires-python`. A floor let the editor and the CLI resolve to different binaries; an exact pin cannot. This is a dev dependency, so nothing shipped changes, and the upgrade produced no lint findings and no reformatting.
+
 ## [0.5.0] - 2026-08-01
 
 ### Added

diff --git a/pyproject.toml b/pyproject.toml
@@ -13,7 +13,7 @@ dev = [
   "pytest>=8.0.0,<9.0.0",
   "pytest-mock>=3.14.0",
   "pytest-sugar>=1.0.0",
-  "ruff>=0.6.8",
+  "ruff==0.16.4",
 ]
 
 [build-system]

diff --git a/uv.lock b/uv.lock