diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 16242ff9fd13f4a1cf9a08b6b8513bff00742bdc..87d074ba55352e6c6fecf061cceffdb9693006d6 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -28,6 +28,7 @@ job_lint_pydocstyle:
   stage: lint
   image: morkolai/paa-bittet-ci
   script:
+    - pip install pydocstyle
     - pydocstyle --version
     - pydocstyle --convention=numpy soitool