diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 454489b..5cec835 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,5 +1,5 @@
 before_script:
-  - apt-get update -qq && apt-get install -y -qq texlive texlive-lang-german latexmk
+  - apt-get update -qq && apt-get install -y -qq texlive texlive-lang-german texlive-latex-extra latexmk
   - pdflatex -version
   - which pdflatex