plaid.gemspec in plaid-12.0.0 vs plaid.gemspec in plaid-13.0.0

@@ -30,10 +30,10 @@
 
   spec.bindir        = 'exe'
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
 
-  spec.required_ruby_version = '>= 2.1.0'
+  spec.required_ruby_version = '>= 2.4.0'
 
   spec.add_dependency 'faraday'
   spec.add_dependency 'faraday_middleware'
   spec.add_dependency 'hashie', '>= 3.4.3'