diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 2006cad678b62623ced30ab5bbcf638b0e65d13b..9d9eb66c5012f542c000dc054f5a4ac35a7c2004 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -24,10 +24,10 @@
 #
 
 services:
-  sqldb:
+  - sqldb:
     image: debian:stretch
     alias: debian
-  caosdb-server:
+  - caosdb-server:
     image: hello-world:latest
     alias: hello