diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 78a110e66..ecaa55ef6 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -164,6 +164,22 @@ test:integration:user_device:
     - ruby -I test/ test/integration/user_device_controller_test.rb
     - rake db:drop
 
+test:integration:api_client_ruby:
+  stage: test
+  dependencies:
+    - browser:build
+  tags:
+    - browser
+  script:
+    - RAILS_ENV=test rake db:create
+    - cp contrib/auto_wizard_test.json auto_wizard.json
+    - script/build/test_startup.sh $RAILS_ENV $BROWSER_PORT $WS_PORT 1
+    - git clone git@github.com:martini/zammad_api_client_ruby.git || script/build/test_shutdown.sh $RAILS_ENV $BROWSER_PORT $WS_PORT 1 1
+    - cd zammad_api_client_ruby
+    - export TEST_URL=http://$IP:$BROWSER_PORT
+    - rspec spec/zammad_api_spec.rb || script/build/test_shutdown.sh $RAILS_ENV $BROWSER_PORT $WS_PORT 1 1
+    - script/build/test_shutdown.sh $RAILS_ENV $BROWSER_PORT $WS_PORT 0 1
+
 test:integration:slack:
   stage: test
   tags: