diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 63876fc3b94118763b1539d34326918c7edee9d3..f7de9e544dd9a2a977c7cddf41e92f2b5e296a2d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -8,7 +8,7 @@ stages:
   - deploy
 
 deploy:
-  image: ruby:2.5-alpine3.8
+  image: ruby:2.3-alpine3.8
   stage: deploy
   script:
     - apk add curl zip