diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 049b62e82409f1d7a68ac7b2aa398b3d68a59831..a92418e9668e2d871b2689a7b9130c41cbd236d5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -11,6 +11,8 @@ workflow:
 
 .prepare:
   image: python:$PYTHON_VERSION
+  tags:
+    - das6
   before_script:
     - python --version
     # Upgrade pip separately, so that the latest pip will be used to install/upgrade other packages