diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1caa03c..cab1fd1 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -81,6 +81,7 @@ generate-docs:
     - python -m pip install wheel dulwich pyrsistent
     - python -m pip install poetry jinja2==3.0.3 regex
     - poetry install
+    - poetry lock
     - apk add py3-dbus
     - apk add bash
   script: