diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 3190ac1062379f60149082b10a6085f32f00ddbd..e44f7997ef238b3c6c8b7355921aa556e39ec0f9 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -5,7 +5,7 @@ before_script:
   
 pages:
   script:
-    - bundle _2.1.4_ install
+    - bundle _2.3_ install
     - bundle exec jekyll build -d public
   tags:
     - docker