diff --git a/Gemfile b/Gemfile
index 7054c552..b2afa573 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,9 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
-gemspec :name => 'git'
+git 'https://github.com/lsegal/yard', branch: 'main' do
+  gem 'yard'
+end
 
+gemspec name: 'git'