diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 86520daa7ad374aab42a299829262f24a9916639..af2c0c79cbeda27cc6c91409692dd1efd1d3d266 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -25,7 +25,7 @@ doxygen:
   tags:
     - documentation
   before_script:
-    - apk update && apk --no-cache add doxygen graphviz
+    - apk update && apk --no-cache add git doxygen graphviz
   script:
     - git clone -b feature-aircraftGeometry2 --recurse-submodules https://gitlab-ci-token:${CI_JOB_TOKEN}@git.rwth-aachen.de/unicado/libraries
     - cd libraries/aircraftGeometry2/doc/ && ( cat Doxyfile ; echo "OUTPUT_DIRECTORY = $CI_PROJECT_DIR/docs/modules/" ) | doxygen -