diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
index 7565eff4a..3291ce16e 100644
--- a/.github/workflows/format.yml
+++ b/.github/workflows/format.yml
@@ -8,6 +8,7 @@ on:
 
 jobs:
   format:
+    if: github.repository_owner == 'withastro'
     runs-on: ubuntu-latest
     env:
       NODE_OPTIONS: "--max_old_space_size=4096"