diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index e9a1bfbcbe6e1e81348727eb0e300e7a8b5f34bd..0ab7defae2c087a64d1bf1d44d434882df6dca70 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -20,10 +20,10 @@ build:
     - export NO_proxy="127.0.0.1, *.ptb.de"
   script:
     - cd ${FOLDER}
-    - lualatex ${FILE}
+    - lualatex --shell-escape ${FILE}
     - biber ${FILE}
-    - lualatex ${FILE}
-    - lualatex ${FILE}
+    - lualatex --shell-escape ${FILE}
+    - lualatex --shell-escape ${FILE}
     - cd ..
   artifacts:
     paths: