diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 9fd66642..f6138548 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -5,6 +5,9 @@ on: [push, pull_request]
 env:
   CARGO_TERM_COLOR: always
 
+permissions:
+  contents: read
+
 jobs:
   check:
     name: "Tests / OS: ${{ matrix.os }} - ${{ matrix.channel }}-${{ matrix.rust_target }}"