diff --git a/.github/workflows/build-container.yml b/.github/workflows/build-container.yml
index bfdc644..6467081 100644
--- a/.github/workflows/build-container.yml
+++ b/.github/workflows/build-container.yml
@@ -54,7 +54,7 @@ jobs:
         cache-from: type=local,mode=max,src=/tmp/.buildx-cache
 
   test:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     needs: [build]
     if: github.event_name == 'pull_request'
     strategy: