diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8fde40c0d1e1f463073f90881ee8386fbf74370f..5b070621b623cd3d20b0b4c7e8b37c6923bad2a5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -7,6 +7,7 @@ variables:
 pages:
   stage: deploy
   before_script:
+  - apt-get -y update && apt-get -y install po4a
   - pip install -r requirements.txt
   script:
   - make publish