diff --git a/.github/workflows/c-cpp.yml b/.github/workflows/c-cpp.yml
index bf1eb34..1b8e65b 100644
--- a/.github/workflows/c-cpp.yml
+++ b/.github/workflows/c-cpp.yml
@@ -1,4 +1,6 @@
 name: C/C++ CI
+permissions:
+  contents: read
 
 on:
   push: