diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8ac5ba21e8660442fe0eb2f87f89e10bcb4bc262..5488b6976abfabb4d6db74fe319b5b3df9bc0cfc 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -22,7 +22,7 @@ before_script:
   - pip install virtualenv
   - virtualenv venv
   - source venv/bin/activate
-  - pip install twine tox
+  - pip install twine tox build
 
 test:
   stage: test