diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index 1eca512ba9..6fd9bb988a 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -1,4 +1,6 @@
 name: build and test
+permissions:
+  contents: read
 
 on:
   push: