diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 39d1811..138397c 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -4,6 +4,8 @@ on:
   pull_request:
     branches:
       - master
+permissions:
+  contents: read
 jobs:
   unit-tests:
     strategy: