diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 68e8e1a5b348ae34eba9c7b997a02bb6c6f749e6..0b6f3818ded6d745e9ea03124e5920a18301d739 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -36,6 +36,6 @@ deploy_staging:
     # build the website
     - bundle exec jekyll build -d _site
     # copy over all the files into the deployment folder
-    - cd _site && rsync -rv -e ssh ./ deploy@magma.informatik.uni-erlangen.de:/var/www/www.kwarc.info --delete
+    - cd _site && rsync -rv -e ssh --checksum ./ deploy@magma.informatik.uni-erlangen.de:/var/www/www.kwarc.info --delete
   only:
     - master
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