diff --git a/.github/workflows/common.yml b/.github/workflows/common.yml
index ff4098862..db57de6ce 100644
--- a/.github/workflows/common.yml
+++ b/.github/workflows/common.yml
@@ -84,10 +84,7 @@ jobs:
       # CUSTOM_COMPILER_VERSION:  '5.1.0+pr12345'
       # CUSTOM_COMPILER_SRC:      'https://github.com/ocaml/ocaml/archive/refs/pull/12345/head.tar.gz'
 
-    runs-on: 'ubuntu-latest'
-    container:
-      image: 'ocaml/opam:alpine'
-      options: --user root
+    runs-on: 'ubuntu-20.04'
 
     timeout-minutes: ${{ inputs.timeout }}