diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5757f77..49b484f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -35,6 +35,8 @@ jobs:
   build:
 
     runs-on: ${{ matrix.os }}
+    permissions:
+      contents: read
     strategy:
       matrix:
         os:  [ windows-latest, macos-latest ]