diff --git a/.gitea/workflows/push.yaml b/.gitea/workflows/push.yaml
index a30355a..0864d11 100644
--- a/.gitea/workflows/push.yaml
+++ b/.gitea/workflows/push.yaml
@@ -22,6 +22,7 @@ jobs:
                   echo "${{ secrets.DEPLOY_KEY }}" > ~/.ssh/id_ed25519.pub
                   chmod 600 ~/.ssh/id_ed25519
                   chmod 600 ~/.ssh/id_ed25519.pub
+                  ssh-keyscan -p 2222 focs.ji.sjtu.edu.cn >> ~/.ssh/known_hosts
                   ssh -T git@focs.ji.sjtu.edu.cn -p 2222
               shell: bash
             - name: Determine build command