diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8e0492028154b15f9013d1c51c587b26af3f3a6d..991a2cfc23cf16e9a6aa0428ce3195d8006dc3f5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -18,7 +18,7 @@ build-openapi-scheme:
   variables:
     OPENAPI_JSON: ./public/api.json
   before_script:
-    - apk add gcc musl-dev zlib-dev jpeg-dev libmagic
+    - apk add gcc musl-dev zlib-dev jpeg-dev libmagic openldap-dev
     - pip install poetry==1.2.2
     - poetry install --without dev,test --no-root
   script: