diff --git a/.gitignore b/.gitignore
index 2cae475..032d064 100644
--- a/.gitignore
+++ b/.gitignore
@@ -50,3 +50,10 @@ workflows/.wmill/tmp/
 !workflows/wmill.yaml
 !workflows/wmill-lock.yaml
 __pycache__/
+
+# Windmill workflow definitions (managed by git_sync on sync branch)
+# Local working directory should not track these on main
+u/
+workflows/f/
+workflows/u/
+workflows/g/