diff --git a/.github/workflows/lock-closed.yml b/.github/workflows/lock-closed.yml
index a8350d626dd39..4b88f003a7430 100644
--- a/.github/workflows/lock-closed.yml
+++ b/.github/workflows/lock-closed.yml
@@ -7,6 +7,7 @@ on:
 
 jobs:
   lock_closed:
+    if: github.repository == 'angular/angular'
     runs-on: ubuntu-latest
     steps:
       - uses: angular/dev-infra/github-actions/lock-closed@66462f6