Gemfile in title-0.0.8 vs Gemfile in title-0.0.9

@@ -1,4 +1,14 @@
 source 'https://rubygems.org'
 
+rails_version = ENV.fetch("RAILS_VERSION", "7.1")
+
+if rails_version == "main"
+  rails_constraint = { github: "rails/rails" }
+else
+  rails_constraint = "~> #{rails_version}.0"
+end
+
+gem "rails", rails_constraint
+
 # Specify your gem's dependencies in title.gemspec
 gemspec