diff --git a/CLAUDE.md b/CLAUDE.md
index 338230b..d1abc59 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -59,5 +59,6 @@ Installers (`install/*.sh`) MUST be idempotent — check before installing.
 
 ## Commits
 
-Do not add `Co-Authored-By` lines to commit messages.
-Prefer one-line commit messages. Add a longer description only when necessary for better understanding.
+- Do not add `Co-Authored-By` lines to commit messages.
+- Commit messages must be in English.
+- Prefer one-line commit messages. Add a longer description only when necessary for better understanding.