diff --git a/.github/workflows/regression.yml b/.github/workflows/regression.yml
index f6800bce..34062cd2 100644
--- a/.github/workflows/regression.yml
+++ b/.github/workflows/regression.yml
@@ -6,6 +6,9 @@ on:
     branches:
       - main
 
+permissions:
+  contents: read
+
 jobs:
   test:
     runs-on: ubuntu-latest