bunto-avatar.gemspec in bunto-avatar-4.0.0 vs bunto-avatar.gemspec in bunto-avatar-5.0.0

@@ -1,6 +1,7 @@
 # coding: utf-8
+# frozen_string_literal: true
 lib = File.expand_path('../lib', __FILE__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 require 'bunto-avatar/version'
 
 Gem::Specification.new do |spec|
@@ -17,10 +18,10 @@
     file.match(%r{^(test|spec|features)/})
   end
 
   spec.require_paths = ['lib']
 
-  spec.add_dependency 'bunto', '~> 1.0'
+  spec.add_dependency 'bunto', '~> 3.2.1'
   spec.add_development_dependency 'bundler', '~> 1.11'
   spec.add_development_dependency 'rake', '~> 10.0'
   spec.add_development_dependency 'rspec', '~> 3.0'
   spec.add_development_dependency 'rubocop'
 end