diff --git a/.gitignore b/.gitignore
index a0090b46d76d38eb81ad66d6fd2af66977a287ce..9fbe9ff9944ac822149d19bbc9a50171b1d4a988 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,7 @@
 # macOS
 .DS_Store
+
+# Git worktrees, per the repo conventions: created under .worktrees/<branch>.
+# Both spellings are ignored so an agent worktree can never show up untracked.
+/.worktrees/
+/.claude/worktrees/