diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ef302d618944e776b3e36f4c6fc404660b918a30..5da8d3a37594dc8492309d18e14a9cf0725320e9 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -60,7 +60,7 @@ prepare:release:
     - mv safe_links_cleaner* ../../safelinks-cleaner-firefox-$VARIANT.xpi
   artifacts:
     paths:
-      - safelinks-cleaner-firefox.xpi
+      - safelinks-cleaner-firefox-$VARIANT.xpi
 
 build:firefox:beta:
   extends: .build:firefox
@@ -132,10 +132,15 @@ collect:
 
 pages:
   stage: deploy
+  image: python:3.7-stretch
   script:
     - cp -r site .public
+    - grep "%BUILDDATE%" .public/index.html
+    - grep "%VERSION%" .public/index.html
     - sed -i -e "s|%BUILDDATE%|$(date +'%Y-%m-%d %H:%M')|g" .public/index.html
     - sed -i -e "s|%VERSION%|$(cat version)|g" .public/index.html
+    - grep "%BUILDDATE%" .public/index.html
+    - grep "%VERSION%" .public/index.html
     - cp safelinks-cleaner-*.xpi .public
     - mv .public public
     - ls -lr public