diff --git a/capistrano-rails-console.gemspec b/capistrano-rails-console.gemspec
index 0f16297..eac2218 100644
--- a/capistrano-rails-console.gemspec
+++ b/capistrano-rails-console.gemspec
@@ -10,8 +10,8 @@ Gem::Specification.new do |spec|
   spec.email         = ['me@ydkn.de']
   spec.description   = %q{Remote rails console for capistrano}
   spec.summary       = %q{Remote rails console for capistrano}
-  spec.homepage      = "https://github.com/ydkn/capistrano-rails-console"
-  spec.license       = "MIT"
+  spec.homepage      = 'https://github.com/ydkn/capistrano-rails-console'
+  spec.license       = 'MIT'
 
   spec.files         = `git ls-files`.split($/)
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
@@ -20,7 +20,7 @@ Gem::Specification.new do |spec|
 
   spec.add_dependency 'capistrano', '>= 3.1.0', '< 4.0.0'
 
-  spec.add_development_dependency 'bundler', '~> 1.3'
+  spec.add_development_dependency 'bundler'
   spec.add_development_dependency 'rake'
   spec.add_development_dependency 'yard'
 end