pio.gemspec in pio-0.14.0 vs pio.gemspec in pio-0.15.0

@@ -35,10 +35,10 @@
   gem.required_ruby_version = '>= 2.0.0'
 
   gem.add_dependency 'bindata', '~> 2.1.0'
 
   gem.add_development_dependency 'rake'
-  gem.add_development_dependency 'bundler', '~> 1.7.12'
+  gem.add_development_dependency 'bundler', '~> 1.8.0'
   gem.add_development_dependency 'pry', '~> 0.10.1'
 
   # Guard
   gem.add_development_dependency 'guard', '~> 2.11.1'
   gem.add_development_dependency 'guard-bundler', '~> 2.1.0'