diff --git a/.github/workflows/c-cpp.yml b/.github/workflows/c-cpp.yml
index ec16cfb..a3e11fc 100644
--- a/.github/workflows/c-cpp.yml
+++ b/.github/workflows/c-cpp.yml
@@ -6,6 +6,9 @@ on:
   pull_request:
     branches: [ "main" ]
 
+permissions:
+  contents: read
+
 jobs:
   build: