diff --git a/.github/workflows/push_image.yml b/.github/workflows/push_image.yml
index 6522c83..a5114cf 100644
--- a/.github/workflows/push_image.yml
+++ b/.github/workflows/push_image.yml
@@ -9,6 +9,7 @@ jobs:
   push_image:
     runs-on: ubuntu-20.04
     permissions:
+      contents: read
       packages: write
     strategy:
       matrix: