diff --git a/.github/workflows/ci-docker.yml b/.github/workflows/ci-docker.yml
index b7af7d2..5ae50b3 100644
--- a/.github/workflows/ci-docker.yml
+++ b/.github/workflows/ci-docker.yml
@@ -9,6 +9,9 @@ env:
   REGISTRY: ghcr.io
   IMAGE_NAME: blinklabs/mithril-client
 
+permissions:
+  contents: read
+
 jobs:
   build-amd64:
     runs-on: ubuntu-latest