diff --git a/.forgejo/workflows/actions-demo.yml b/.forgejo/workflows/actions-demo.yml
index f6fc0ef..dc52cdf 100644
--- a/.forgejo/workflows/actions-demo.yml
+++ b/.forgejo/workflows/actions-demo.yml
@@ -6,7 +6,7 @@ on:
       - '**/.forgejo'
 jobs:
   get-changed-folders:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - name: get-changed-folders
         id: get_changed