diff --git a/.github/workflows/fork-sync-skills.yml b/.github/workflows/fork-sync-skills.yml
index 273bfc7..8d25ee2 100644
--- a/.github/workflows/fork-sync-skills.yml
+++ b/.github/workflows/fork-sync-skills.yml
@@ -16,6 +16,10 @@ permissions:
   contents: write
   issues: write
 
+concurrency:
+  group: fork-sync
+  cancel-in-progress: true
+
 jobs:
   sync-and-merge:
     if: github.repository != 'qwibitai/nanoclaw'