diff --git a/Gemfile b/Gemfile
index 5c3b0ab..113e3d5 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,3 +4,9 @@ source 'https://rubygems.org'
 
 # Specify your gem's dependencies in google_distance_matrix.gemspec
 gemspec
+
+gem 'rake'
+gem 'rspec', '~> 3.13.0'
+gem 'rubocop', '~> 0.93.1'
+gem 'shoulda-matchers', '~> 6.0'
+gem 'webmock', '~> 3.23.1'
diff --git a/google_distance_matrix.gemspec b/google_distance_matrix.gemspec
index 10932ad..9303bae 100644
--- a/google_distance_matrix.gemspec
+++ b/google_distance_matrix.gemspec
@@ -24,11 +24,4 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'activemodel', '>= 3.2.13'
   spec.add_dependency 'activesupport', '>= 3.2.13'
   spec.add_dependency 'google_business_api_url_signer', '~> 0.1.3'
-
-  spec.add_development_dependency 'bundler'
-  spec.add_development_dependency 'rake'
-  spec.add_development_dependency 'rspec', '~> 3.13.0'
-  spec.add_development_dependency 'rubocop', '~> 0.93.1'
-  spec.add_development_dependency 'shoulda-matchers', '~> 6.0'
-  spec.add_development_dependency 'webmock', '~> 3.23.1'
 end