diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 960915d..27cbb3f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,15 +1,5 @@
-image: ruby:2.5-slim
-
-cache:
-  paths:
-    - vendor/ruby
-
-before_script:
-  - apt-get update -q && apt-get install git build-essential -yqq
-  - ruby -v
-  - gem install bundler --no-ri --no-rdoc
-  - bundle install -j $(nproc) --path vendor
-
 rubocop:
+  image: ruby:2.5
   script:
-    - bundle exec rubocop
+    - gem install rubocop --no-ri --no-rdoc
+    - rubocop