diff --git a/Gemfile b/Gemfile
index 7ac743cbd6f6907117461066dd38936218bc0c4f..60c571f782f015c9ca6fccf2bd4bf56282084611 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gemspec
 gem 'mocha', '~> 0.14', require: false
 
 gem 'rack-cache', '~> 1.2'
-gem 'bcrypt-ruby', '~> 3.1.0'
+gem 'bcrypt-ruby', '~> 3.1.2'
 gem 'jquery-rails', '~> 2.2.0'
 gem 'turbolinks'
 gem 'coffee-rails', '~> 4.0.0'
diff --git a/activemodel/lib/active_model/secure_password.rb b/activemodel/lib/active_model/secure_password.rb
index 8b9ac97bbb3a92ff5d3477b4b087b6021f904fd8..17fafe4be9fcde57baa8bb2167561c187477b83a 100644
--- a/activemodel/lib/active_model/secure_password.rb
+++ b/activemodel/lib/active_model/secure_password.rb
@@ -20,9 +20,9 @@ module ClassMethods
       # value to the password_confirmation attribute and the validation
       # will not be triggered.
       #
-      # You need to add bcrypt-ruby (~> 3.1.0) to Gemfile to use #has_secure_password:
+      # You need to add bcrypt-ruby (~> 3.1.2) to Gemfile to use #has_secure_password:
       #
-      #   gem 'bcrypt-ruby', '~> 3.1.0'
+      #   gem 'bcrypt-ruby', '~> 3.1.2'
       #
       # Example using Active Record (which automatically includes ActiveModel::SecurePassword):
       #
@@ -46,7 +46,7 @@ def has_secure_password(options = {})
         # This is to avoid ActiveModel (and by extension the entire framework)
         # being dependent on a binary library.
         begin
-          gem 'bcrypt-ruby', '~> 3.1.0'
+          gem 'bcrypt-ruby', '~> 3.1.2'
           require 'bcrypt'
         rescue LoadError
           $stderr.puts "You don't have bcrypt-ruby installed in your application. Please add it to your Gemfile and run bundle install"
diff --git a/guides/code/getting_started/Gemfile b/guides/code/getting_started/Gemfile
index 3d570129010639c23231a16ea0cf1900879b9627..eef61808049f4676c380d59b64cd7f2fc2ad6418 100644
--- a/guides/code/getting_started/Gemfile
+++ b/guides/code/getting_started/Gemfile
@@ -31,7 +31,7 @@ end
 gem 'jbuilder', '~> 1.2'
 
 # To use ActiveModel has_secure_password
-# gem 'bcrypt-ruby', '~> 3.1.0'
+# gem 'bcrypt-ruby', '~> 3.1.2'
 
 # Use unicorn as the app server
 # gem 'unicorn'
diff --git a/railties/lib/rails/generators/rails/app/templates/Gemfile b/railties/lib/rails/generators/rails/app/templates/Gemfile
index adc83353b4878023a038d817e5d10ab793666e57..5cbca838f47d694bd0b28d262a21e0098172ed5d 100644
--- a/railties/lib/rails/generators/rails/app/templates/Gemfile
+++ b/railties/lib/rails/generators/rails/app/templates/Gemfile
@@ -16,7 +16,7 @@ group :doc do
 end
 
 # Use ActiveModel has_secure_password
-# gem 'bcrypt-ruby', '~> 3.1.0'
+# gem 'bcrypt-ruby', '~> 3.1.2'
 
 # Use unicorn as the app server
 # gem 'unicorn'