diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 487d6c19af5d73671fae80909bb6a1b71c822c8d..b1df87a448c9e7297cc452ec64c202342798c1fe 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2,7 +2,7 @@ image: node:8
 
 # Set up MySQL test-database
 services:
-  - mysql:latest
+  - mysql:5.5
 
 # Configure test-database
 variables: