diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 9f19a6d..a638dcf 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,10 +1,12 @@
 # This file is a template, and might need editing before it works on your project.
 # Full project: https://gitlab.com/pages/doxygen
-image: alpine
+image: ubuntu:trusty
 
 pages:
   script:
-  - apk update && apk add doxygen
+  - apk update
+  - apl add graphviz
+  - apk add doxygen
   - doxygen Doku/Doxygen/Doxyfile
   - mv Doku/Doxygen/html/ public/
   artifacts: