diff --git a/.gitignore b/.gitignore
index 45a18015..98d09efc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,3 +30,6 @@ settings.json
 *.mcp.json
 .mcp.json
 .ace-tool/
+
+# CCW worktrees for parallel execution
+.ccw/worktrees/