diff --git a/agents/commit-changer.md b/agents/commit-changer.md
index 2846dc5..67f627d 100644
--- a/agents/commit-changer.md
+++ b/agents/commit-changer.md
@@ -105,8 +105,6 @@ Follow Conventional Commits and match the repo's existing style:
 <type>(<scope>): <short description>
 
 <optional body — what and why, not how>
-
-Co-Authored-By: Claude <noreply@anthropic.com>
 ```
 
 Types: `feat`, `fix`, `refactor`, `chore`, `docs`, `test`, `style`, `perf`