diff --git a/.github/workflows/cicd-ec2.yml b/.github/workflows/cicd-ec2.yml
index 4dadd61f..d01b7550 100644
--- a/.github/workflows/cicd-ec2.yml
+++ b/.github/workflows/cicd-ec2.yml
@@ -186,6 +186,7 @@ jobs:
         run: |
           aws deploy create-deployment \
           --application-name ${{ env.CODE_DEPLOY_APPLICATION_NAME }} \
+          --deployment-config-name CodeDeployDefault.AllAtOnce \
           --deployment-group-name ${{ secrets.CODE_DEPLOY_DEPLOYMENT_GROUP_NAME }} \
           --s3-location bucket=$S3_BUCKET_NAME,key=$GITHUB_SHA.zip,bundleType=zip