diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 962684c5dd3b4c7c2d60ae9824090ea79caa2ae4..fdadcf3fee8d0f3b4f56f91c8f6a3b713d4dda88 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -7,9 +7,9 @@ before_script:
   - echo "$SSH_PRIVATE_KEY" | base64 -d | tr -d '\r' | ssh-add - > /dev/null
   - mkdir -p ~/.ssh
   - chmod 700 ~/.ssh
-  - ssh-keyscan 193.196.53.93 > ~/.ssh/known_hosts
+  # - ssh-keyscan 193.196.53.93 > ~/.ssh/known_hosts
   # - ssh-keyscan bwunicluster.scc.kit.edu > ~/.ssh/known_hosts
-  - echo "$SSH_KNOWN_HOSTS" >> ~/.ssh/known_hosts
+  - echo "$SSH_KNOWN_HOSTS" > ~/.ssh/known_hosts
   - chmod 644 ~/.ssh/known_hosts
 
 Test SSH: