diff --git a/.github/workflows/smtp_proxy_server.yml b/.github/workflows/smtp_proxy_server.yml
index c8b47a2d..71b44972 100644
--- a/.github/workflows/smtp_proxy_server.yml
+++ b/.github/workflows/smtp_proxy_server.yml
@@ -17,6 +17,9 @@ env:
 jobs:
   build-and-push-image:
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
     steps:
       - uses: actions/checkout@v4