diff --git a/Gemfile b/Gemfile
index 1c5c25c..bac8367 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,9 +11,4 @@ group :test do
   gem 'sqlite3', '~> 1.4.0'
   gem 'capybara'
   gem 'poltergeist'
-
-  # Lock down versions of gems for older versions of Ruby
-  if Gem::Version.new(RUBY_VERSION.dup) < Gem::Version.new("2.4")
-    gem 'responders', '~> 2.4'
-  end
 end
diff --git a/README.md b/README.md
index 2baef9a..3163bb7 100644
--- a/README.md
+++ b/README.md
@@ -6,18 +6,15 @@ It uses [ruby-saml][] to handle all SAML-related stuff.
 
 ## Installation
 
-Add this line to your application's Gemfile:
+Add this gem to your application's Gemfile:
 
-    gem 'devise_saml_authenticatable'
+    git_source(:github) { |repo_name| "https://github.com/#{repo_name}" }
+    gem "devise_saml_authenticatable", github: "apokalipto/devise_saml_authenticatable"
 
 And then execute:
 
     $ bundle
 
-Or install it yourself as:
-
-    $ gem install devise_saml_authenticatable
-
 ## Usage
 
 Follow the [normal devise installation process](https://github.com/plataformatec/devise/tree/master#getting-started). The controller filters and helpers are unchanged from normal devise usage.
diff --git a/lib/devise_saml_authenticatable/version.rb b/lib/devise_saml_authenticatable/version.rb
index 507ec9c..24c2b2b 100644
--- a/lib/devise_saml_authenticatable/version.rb
+++ b/lib/devise_saml_authenticatable/version.rb
@@ -1,3 +1,3 @@
 module DeviseSamlAuthenticatable
-  VERSION = "1.5.0"
+  VERSION = "1.6.0"
 end
diff --git a/spec/support/Gemfile.rails4 b/spec/support/Gemfile.rails4
index f1fd48b..7502bd6 100644
--- a/spec/support/Gemfile.rails4
+++ b/spec/support/Gemfile.rails4
@@ -30,4 +30,12 @@ group :test do
   elsif Gem::Version.new(RUBY_VERSION.dup) < Gem::Version.new("2.4")
     gem 'responders', '~> 2.0'
   end
+
+  if Gem::Version.new(RUBY_VERSION.dup) < Gem::Version.new("2.2")
+    gem 'byebug', '~> 9.0'
+  elsif Gem::Version.new(RUBY_VERSION.dup) < Gem::Version.new("2.3")
+    gem 'byebug', '~> 10.0'
+  elsif Gem::Version.new(RUBY_VERSION.dup) < Gem::Version.new("2.4")
+    gem 'byebug', '~> 11.0.0'
+  end
 end
diff --git a/spec/support/Gemfile.rails5 b/spec/support/Gemfile.rails5
index 818b4be..bc3ee5b 100644
--- a/spec/support/Gemfile.rails5
+++ b/spec/support/Gemfile.rails5
@@ -16,4 +16,10 @@ group :test do
   if Gem::Version.new(RUBY_VERSION.dup) < Gem::Version.new("2.4")
     gem 'responders', '~> 2.4'
   end
+
+  if Gem::Version.new(RUBY_VERSION.dup) < Gem::Version.new("2.3")
+    gem 'byebug', '~> 10.0'
+  elsif Gem::Version.new(RUBY_VERSION.dup) < Gem::Version.new("2.4")
+    gem 'byebug', '~> 11.0.0'
+  end
 end
diff --git a/spec/support/Gemfile.rails5.1 b/spec/support/Gemfile.rails5.1
index 6f6798d..2156e9a 100644
--- a/spec/support/Gemfile.rails5.1
+++ b/spec/support/Gemfile.rails5.1
@@ -16,4 +16,10 @@ group :test do
   if Gem::Version.new(RUBY_VERSION.dup) < Gem::Version.new("2.4")
     gem 'responders', '~> 2.4'
   end
+
+  if Gem::Version.new(RUBY_VERSION.dup) < Gem::Version.new("2.3")
+    gem 'byebug', '~> 10.0'
+  elsif Gem::Version.new(RUBY_VERSION.dup) < Gem::Version.new("2.4")
+    gem 'byebug', '~> 11.0.0'
+  end
 end
diff --git a/spec/support/Gemfile.rails5.2 b/spec/support/Gemfile.rails5.2
index 8a479d8..7edc5c2 100644
--- a/spec/support/Gemfile.rails5.2
+++ b/spec/support/Gemfile.rails5.2
@@ -16,4 +16,10 @@ group :test do
   if Gem::Version.new(RUBY_VERSION.dup) < Gem::Version.new("2.4")
     gem 'responders', '~> 2.4'
   end
+
+  if Gem::Version.new(RUBY_VERSION.dup) < Gem::Version.new("2.3")
+    gem 'byebug', '~> 10.0'
+  elsif Gem::Version.new(RUBY_VERSION.dup) < Gem::Version.new("2.4")
+    gem 'byebug', '~> 11.0.0'
+  end
 end