diff --git a/.gitea/workflows/test_infra.yaml b/.gitea/workflows/test_infra.yaml
index 8a4cc83..ca4ce8f 100644
--- a/.gitea/workflows/test_infra.yaml
+++ b/.gitea/workflows/test_infra.yaml
@@ -14,10 +14,9 @@ jobs:
       - name: Add the SSH key to known_hosts
         env:
           SSH_AUTH_SOCK: /tmp/ssh_agent.sock
-          SSH_PRIVATE_KEY: ${{ secrets.SSH_PRIVATE_KEY }}
         run: |
           ssh-agent -a $SSH_AUTH_SOCK > /dev/null
-          echo $SSH_PRIVATE_KEY | ssh-add - $SSH_PRIVATE_KEY
+          ssh-add - <<< ${{ secrets.SSH_PRIVATE_KEY }}
 
       - name: init containers
         env: