diff --git a/.gitea/workflows/size.yml b/.gitea/workflows/size.yml
index ca4befb..69ea42e 100644
--- a/.gitea/workflows/size.yml
+++ b/.gitea/workflows/size.yml
@@ -6,6 +6,8 @@ jobs:
   add_pr_size_label:
     runs-on: ubuntu-latest
     name: Check PR size
+    container:
+      image: ubuntu:22.04
 
     steps:
       - name: Label and comment PR