diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 9787cfe7..e02383f4 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -1,5 +1,8 @@
 name: Run tests
 
+permissions:
+  contents: read
+
 on:
   push:
     branches: