diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 5c641f8..38ecb29 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -22,6 +22,12 @@ jobs:
         with:
           ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
 
+      - name: Setup SSH known_hosts
+        run: |
+          mkdir -p ~/.ssh
+          ssh-keyscan -H ${{ secrets.BASTION_IP }} >> ~/.ssh/known_hosts
+          ssh-keyscan -H ${{ secrets.PROD_IP }} >> ~/.ssh/known_hosts
+      
       - name: Transfer JAR to EC2 via Bastion
         run: |
           scp -o ProxyJump=${{ secrets.SSH_USER }}@${{ secrets.BASTION_IP }} -o StrictHostKeyChecking=no \