diff --git a/.github/workflows/pr_closed.yml b/.github/workflows/pr_closed.yml
index 6a349279..140ba6d0 100644
--- a/.github/workflows/pr_closed.yml
+++ b/.github/workflows/pr_closed.yml
@@ -17,7 +17,8 @@ jobs:
         uses: actions/checkout@v2
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v1
-        build-args: |
+        with:
+          build-args:
             SERVER_ENV=${{ secrets.REACT_APP_SERVER_TYPE_PROD }}
       - name: Login to Docker
         uses: docker/login-action@v1