diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b0f899b..71ff4fb 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -6,6 +6,9 @@ on:
   pull_request:
     branches: [ "master" ]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     name: ${{ matrix.os }}-${{ matrix.arch }}