diff --git a/.github/workflows/unit.yml b/.github/workflows/unit.yml
index 01c9bcc5..c6be1b0c 100644
--- a/.github/workflows/unit.yml
+++ b/.github/workflows/unit.yml
@@ -2,6 +2,9 @@ name: unit
 
 on: [ push, pull_request ]
 
+permissions:
+  contents: read
+
 jobs:
   test:
     strategy: