diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ff203b9e..3a736b6f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -10,7 +10,7 @@ variables:
   MYSQL_ROOT_PASSWORD: root
 unitTesting:
   stage: testing
-  image: php:7.2.6
+  image: php:7.1.3
   services:
     - mysql:5.7
   script: