diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 730f5dbb..8a907c8c 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -4,6 +4,8 @@
 
 name: CI
 
+permissions: {}
+
 "on":
   push:
     branches: