diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 570e863..d9c4118 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -25,4 +25,5 @@ jobs:
         ruby-version: ${{ matrix.ruby-version }}
         bundler-cache: true # runs 'bundle install' and caches installed gems automatically
     - name: Run tests
+      run: gem install rubocop
       run: rubocop