diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 0f63672..25334b7 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -1,5 +1,8 @@
 name: check
 
+permissions:
+  contents: read
+
 on:
   pull_request:
   push:
diff --git a/.github/workflows/google-utilities.yml b/.github/workflows/google-utilities.yml
index af57077..f71f852 100644
--- a/.github/workflows/google-utilities.yml
+++ b/.github/workflows/google-utilities.yml
@@ -1,5 +1,8 @@
 name: google-utilities
 
+permissions:
+  contents: read
+
 on:
   pull_request:
   schedule: