diff --git a/CHANGES b/CHANGES
index 46aa5b8..e0eee75 100644
--- a/CHANGES
+++ b/CHANGES
@@ -12,6 +12,20 @@ $ pip install --user --upgrade --pre gp-libs
 
 - _Add your latest changes from PRs here_
 
+### Development
+
+- Strengthen linting (#31)
+
+  - Add flake8-commas (COM)
+
+	- https://docs.astral.sh/ruff/rules/#flake8-commas-com
+	- https://pypi.org/project/flake8-commas/
+
+  - Add flake8-builtins (A)
+
+	- https://docs.astral.sh/ruff/rules/#flake8-builtins-a
+	- https://pypi.org/project/flake8-builtins/
+
 ## gp-libs 0.0.6post0 (2024-02-01)
 
 ### Packaging