diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 30d503d9c2a7abf5397814a28125dbd34f19a2ed..cf6bb64aa5cd11b5a63958effd1493c854ff2f9f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -160,7 +160,7 @@ test:htmlproofer:external_links:
   script:
     - "bundle exec htmlproofer \
         --internal-domains localhost:4000 \
-        --url-ignore 'https://www.openstoragenetwork.org' \
+        --url-ignore '/www.openstoragenetwork.org/,/www.hzdr.de/,/indico4.twgrid.org/,/aai.helmholtz.de/,/cvs.data.kit.edu/' \
         --assume-extension public/"
   rules:
     - if: '$CI_PIPELINE_SOURCE == "schedule"'