diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 41c845f4414bccfedb4df5fa9e952aaae51b5bbd..0e238b60efee94b95f814c55a0a3b85000259384 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -11,3 +11,4 @@ build-pdf:
   
   script:
     - opam install ott
+    - make