diff --git a/.github/workflows/CICD.yml b/.github/workflows/CICD.yml
index 7d0ff4ac..9a49a56c 100644
--- a/.github/workflows/CICD.yml
+++ b/.github/workflows/CICD.yml
@@ -25,9 +25,9 @@ jobs:
           - server: loadbalancer3
             host: ${{ vars.LOAD_SSH_HOST_3 }}
             type: api3
-          # - server: loadbalancer4
-          #   host: ${{ vars.LOAD_SSH_HOST_4 }}
-          #   type: api4
+          - server: loadbalancer4
+            host: ${{ vars.LOAD_SSH_HOST_4 }}
+            type: api4
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
@@ -105,17 +105,17 @@ jobs:
           target: /corinee
           overwrite: true
 
-      # - name: Send files to loadbalancer
-      #   if: matrix.type == 'api4'
-      #   uses: appleboy/scp-action@master
-      #   with:
-      #     host: ${{ secrets.LOAD_SSH_HOST_4 }}
-      #     username: ${{ secrets.SSH_USERNAME }}
-      #     password: ${{ secrets.LOAD_SSH_PASSWORD_4 }}
-      #     port: ${{ secrets.SSH_PORT }}
-      #     source: "docker-compose.server.yml,.env"
-      #     target: /corinee
-      #     overwrite: true
+      - name: Send files to loadbalancer
+        if: matrix.type == 'api4'
+        uses: appleboy/scp-action@master
+        with:
+          host: ${{ secrets.LOAD_SSH_HOST_4 }}
+          username: ${{ secrets.SSH_USERNAME }}
+          password: ${{ secrets.LOAD_SSH_PASSWORD_4 }}
+          port: ${{ secrets.SSH_PORT }}
+          source: "docker-compose.server.yml,.env"
+          target: /corinee
+          overwrite: true
 
       - name: Deploy to main server
         if: matrix.type == 'full'
@@ -174,19 +174,19 @@ jobs:
             docker-compose -f docker-compose.server.yml down
             docker-compose -f docker-compose.server.yml up -d
       
-      # - name: Deploy to loadbalancer4
-      #   if: matrix.type == 'api4'
-      #   uses: appleboy/ssh-action@master
-      #   with:
-      #     host: ${{ secrets.LOAD_SSH_HOST_4 }}
-      #     username: ${{ secrets.SSH_USERNAME }}
-      #     password: ${{ secrets.LOAD_SSH_PASSWORD_4 }}
-      #     port: ${{ secrets.SSH_PORT }}
-      #     script: |
-      #       cd /corinee
-      #       docker pull ${{ secrets.DOCKERHUB_USERNAME }}/corinee-server
-      #       docker-compose -f docker-compose.server.yml down
-      #       docker-compose -f docker-compose.server.yml up -d
+      - name: Deploy to loadbalancer4
+        if: matrix.type == 'api4'
+        uses: appleboy/ssh-action@master
+        with:
+          host: ${{ secrets.LOAD_SSH_HOST_4 }}
+          username: ${{ secrets.SSH_USERNAME }}
+          password: ${{ secrets.LOAD_SSH_PASSWORD_4 }}
+          port: ${{ secrets.SSH_PORT }}
+          script: |
+            cd /corinee
+            docker pull ${{ secrets.DOCKERHUB_USERNAME }}/corinee-server
+            docker-compose -f docker-compose.server.yml down
+            docker-compose -f docker-compose.server.yml up -d
 
       - name: Generate Error Report
         if: failure()
diff --git a/nginx.conf b/nginx.conf
index c4f2051d..9d94f579 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -8,11 +8,11 @@ http {
 
    upstream api_servers {
        least_conn;
-       server corinee_server_1:3000;     # 메인 서버의 API (docker network 내부 이름 사용)
-       server 223.130.134.167:3000;      # 두 번째 서버의 공인 IP
-       server 223.130.130.192:3000;
-       server 211.188.59.137:3000;
-    #    server 211.188.59.126:3000;
+       server corinee_server_1:3000 weight=4;     # 메인 서버의 API (docker network 내부 이름 사용)
+       server 223.130.134.167:3000 weight=8;      # 두 번째 서버의 공인 IP
+       server 223.130.130.192:3000 weight=8;
+       server 211.188.59.137:3000 weight=8;
+       server 211.188.59.126:3000 weight=1;
    }
 
    server {