diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index d0eaf22a..9387a278 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -10,6 +10,7 @@ permissions:
 
 jobs:
   update:
+    if: github.repository == 'slack-ruby/slack-api-ref'
     runs-on: ubuntu-latest
     steps:
       - name: Checkout