diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 71fc04c..eab4274 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,5 +1,5 @@
 build:
-  image: ubuntu:latest
+  image: ubuntu:20.04
   stage: build
   script:
     - apt-get update
@@ -13,7 +13,7 @@ build:
 
 deploy_production:
   type: deploy
-  image: ubuntu:latest
+  image: ubuntu:20.04
   environment:
     name: production
     url: timer.itsblue.de