diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 4e47b008..cff541d8 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -3,10 +3,15 @@ name: build
 
 on: [push, pull_request]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest
 
+    permissions:
+      contents: read
     steps:
       - uses: actions/checkout@v3
       - name: Set up JDK 17