diff --git a/.github/workflows/semgrep.yml b/.github/workflows/semgrep.yml
index 927bb1d..0ef66a5 100644
--- a/.github/workflows/semgrep.yml
+++ b/.github/workflows/semgrep.yml
@@ -13,6 +13,7 @@ on:
 jobs:
   semgrep:
     name: semgrep/ci
+    runs-on: ubuntu-20.04
     env:
       SEMGREP_APP_TOKEN: ${{ secrets.SEMGREP_APP_TOKEN }}
     container: