diff --git a/Formula/modernize.rb b/Formula/modernize.rb
index f2a279c..093abda 100644
--- a/Formula/modernize.rb
+++ b/Formula/modernize.rb
@@ -22,6 +22,7 @@ class Modernize < Formula
   end
 
   license "Proprietary"
+  depends_on "gh"
 
   def install
     libexec.install "modernize"