diff --git a/.gitea/workflows/run-tests.yml b/.gitea/workflows/run-tests.yml
index 46161f7..03240ec 100644
--- a/.gitea/workflows/run-tests.yml
+++ b/.gitea/workflows/run-tests.yml
@@ -9,7 +9,7 @@ on:
 jobs:
   test:
     runs-on: ubuntu-22.04
-    container: mcr.microsoft.com/devcontainers/python:3.11
+    container: python:3.11-slim
 
     steps:
       - name: Install Node (and git/make) inside container