diff --git a/.github/workflows/backend-ci-cd.yml b/.github/workflows/backend-ci-cd.yml
index 24dae41..23a3308 100644
--- a/.github/workflows/backend-ci-cd.yml
+++ b/.github/workflows/backend-ci-cd.yml
@@ -78,9 +78,11 @@ jobs:
         with:
           name: build-artifact
 
-      # 4. JAR 파일 확인
-      - name: Verify JAR File
-        run: ls -la /home/runner/work/HalfFifty/HalfFifty/HalfFifty_BE-0.0.1-SNAPSHOT.jar
+      # 4. 호스트 키 등록
+      - name: Add Host Key to known_hosts
+        run: |
+          mkdir -p ~/.ssh
+          ssh-keyscan -H ${{ secrets.AWS_IP }} >> ~/.ssh/known_hosts
 
       # 5. SSH 키 파일 생성 및 권한 설정
       - name: Set permissions for private key
diff --git a/HalfFifty_BE/src/main/java/HalfFifty/HalfFifty_BE/HealthCheck.java b/HalfFifty_BE/src/main/java/HalfFifty/HalfFifty_BE/HealthCheck.java
index f50812b..a3cc814 100644
--- a/HalfFifty_BE/src/main/java/HalfFifty/HalfFifty_BE/HealthCheck.java
+++ b/HalfFifty_BE/src/main/java/HalfFifty/HalfFifty_BE/HealthCheck.java
@@ -8,6 +8,6 @@ public class HealthCheck {
 
     @GetMapping("/")
     public String health() {
-        return "server on!!!!!";
+        return "server on!!!!!!!";
     }
 }