diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 46d481b0..df02450b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -24,7 +24,7 @@ staging:
   before_script:
     - mkdir -p ~/.ssh
     - echo -e "$SSH_PRIVATE_KEY" > ~/.ssh/id_rsa
-    - chmod 600 ~/.ssh/id_rsa
+    - chmod 400 ~/.ssh/id_rsa
     - '[[ -f /.dockerenv ]] && echo -e "Host *\n\tStrictHostKeyChecking no\n\n" > ~/.ssh/config'
   script:
     - ssh izyim@40.76.84.105 "cd exchange && git pull origin master && sudo docker-compose -f docker-prod.yml up -d"