diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c2580a2..619b4cc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -3,6 +3,9 @@ name: CI
 
 on: [push]
 
+permissions:
+  contents: read
+
 jobs:
   lint:
     runs-on: ${{ matrix.os }}