diff --git a/.github/tests.sh b/.github/tests.sh
index 31ab777..4244598 100755
--- a/.github/tests.sh
+++ b/.github/tests.sh
@@ -12,6 +12,7 @@ done
 
 docker exec -i zammad-docker-compose_zammad-railsserver_1 bash <<'EOF'
 set -o errexit
+bundle install
 bundle exec rubocop
 # rake db:migrate
 # rake db:seed