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