diff --git a/extensions/package-manager/.github/workflows/backend.yml b/extensions/package-manager/.github/workflows/backend.yml
index eaf8723ad..dfca968ac 100644
--- a/extensions/package-manager/.github/workflows/backend.yml
+++ b/extensions/package-manager/.github/workflows/backend.yml
@@ -8,8 +8,10 @@ on: [workflow_dispatch, push, pull_request]
 
 jobs:
   run:
-    uses: flarum/.github/.github/workflows/REUSABLE_backend.yml@main
+    uses: flarum/.github/.github/workflows/REUSABLE_backend.yml@as/support-npm-yarn
     with:
       enable_backend_testing: true
 
-      backend_directory: .
\ No newline at end of file
+      backend_directory: .
+
+      php_versions: '["7.4", "8.0"]'
diff --git a/extensions/package-manager/composer.json b/extensions/package-manager/composer.json
index 7824630ed..d37998a67 100755
--- a/extensions/package-manager/composer.json
+++ b/extensions/package-manager/composer.json
@@ -39,6 +39,7 @@
             }
         },
         "flarum-cli": {
+            "exludeScaffolding": [".github/workflows/backend.yml"],
             "modules": {
                 "admin": true,
                 "forum": false,