diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index fafd966e3a615028d36a0f6435dd1e83465ac883..868dc67ac74d5155f0cfdc50ed86ac160a13c110 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,11 +1,11 @@
 image: ruby
 
 before_script:
-  - gem install bundler:2.1.4
-  
+  - gem install bundler:2.3
+
 pages:
   script:
-    - bundle _2.1.4_ install
+    - bundle _2.3_ install
     - bundle exec jekyll build -d public
   tags:
     - docker