diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 142ff49df8c088f62d3d8fd672097ea95244f1a8..60b22821ebb89655af2a7c294c2c330bd3914e66 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,4 +1,4 @@
-image: pandoc/core
+image: pandoc/core:2.7
 
 pages:
   stage: deploy