diff --git a/gemfiles/ar_4.0.gemfile b/gemfiles/ar_4.0.gemfile
index 99ecb105..13849560 100644
--- a/gemfiles/ar_4.0.gemfile
+++ b/gemfiles/ar_4.0.gemfile
@@ -4,4 +4,4 @@ source "https://rubygems.org"
 
 gem "activerecord", "~> 4.0"
 
-gemspec :path => "../"
+gemspec path: "../"
diff --git a/gemfiles/ar_4.2.gemfile b/gemfiles/ar_4.2.gemfile
index c03c7907..955be8ce 100644
--- a/gemfiles/ar_4.2.gemfile
+++ b/gemfiles/ar_4.2.gemfile
@@ -4,4 +4,4 @@ source "https://rubygems.org"
 
 gem "activerecord", "~> 4.2"
 
-gemspec :path => "../"
+gemspec path: "../"
diff --git a/gemfiles/ar_5.0.gemfile b/gemfiles/ar_5.0.gemfile
index e2953ec5..97fa08b9 100644
--- a/gemfiles/ar_5.0.gemfile
+++ b/gemfiles/ar_5.0.gemfile
@@ -6,4 +6,4 @@ gem "activerecord", "~> 5.0.0"
 gem "rspec-rails", "~> 3.5.1"
 gem "rails-controller-testing"
 
-gemspec :path => "../"
+gemspec path: "../"
diff --git a/gemfiles/ar_master.gemfile b/gemfiles/ar_master.gemfile
index 1395188e..27f4bde6 100644
--- a/gemfiles/ar_master.gemfile
+++ b/gemfiles/ar_master.gemfile
@@ -2,8 +2,8 @@
 
 source "https://rubygems.org"
 
-gem "rails", :github => "rails/rails"
+gem "rails", github: "rails/rails"
 gem "rspec-rails", "~> 3.5.1"
 gem "rails-controller-testing"
 
-gemspec :path => "../"
+gemspec path: "../"