diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 64be0b4424746ab483b29a077400718e2cf77853..ee1cddc3ffde2a75214e751a8f5d7a9433ccd188 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -20,7 +20,7 @@
 #
 
 services:
-  - mariadb:10.4
+  - mariadb:10.2
 variables:
   CI_REGISTRY_IMAGE: $CI_REGISTRY/caosdb-mysqlbackend-testenv:latest
   MYSQL_ROOT_PASSWORD: caosdb1234