diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index aae518e8f6430ca25f3fb0c0d38f7f40386bb669..d80120875254f72f44f4f2473aa609df5235d3e3 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -3,7 +3,7 @@ image: python:3.7-alpine
 test:
   stage: test
   script:
-  - pip install -U -r requirements.txt
+  - pip install -r requirements.txt
   - cp -r Docs/* .
   - sphinx-build -b html . public
   only:
@@ -14,7 +14,7 @@ test:
 pages:
   stage: deploy
   script:
-  - pip install -U -r requirements.txt
+  - pip install -r requirements.txt
   - cp -r Docs/* .
   - sphinx-build -b html . public
   - cp Docs/hhu-logo.png public/_static/hhu-logo.png