diff --git a/.gitea/workflows/test.yaml b/.gitea/workflows/test.yaml
index 6dc11db..e7754fc 100644
--- a/.gitea/workflows/test.yaml
+++ b/.gitea/workflows/test.yaml
@@ -5,10 +5,10 @@ on:
 
 jobs:
   test:
-    runs-on: ruby-latest
-    container:
-      image: ruby:3.4.1-alpine3.20
+    runs-on: cth-ubuntu-latest
     steps:
+    - uses: actions/checkout@v4
+    - uses: https://github.com/ruby/setup-ruby@217c988b8c2bf2bacb2d5c78a7e7b18f8c34daed
     - uses: actions/cache@v4
       with:
         path: vendor/bundle