diff --git a/.travis.yml b/.travis.yml
index b4d8d02..8f04827 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,7 @@
 language: ruby
 rvm:
-  - 1.9.3
-  - 2.0.0
-  - 2.1.1
\ No newline at end of file
+  - 2.0
+  - 2.1
+  - 2.2
+  - 2.3
+  - 2.4
diff --git a/lib/onesky.rb b/lib/onesky.rb
index f2889c3..09a23b4 100644
--- a/lib/onesky.rb
+++ b/lib/onesky.rb
@@ -1,4 +1,3 @@
 require 'onesky/version'
 require 'onesky/client'
 require 'onesky/errors'
-require 'onesky/restclient'
diff --git a/lib/onesky/restclient.rb b/lib/onesky/restclient.rb
deleted file mode 100644
index 41007ee..0000000
--- a/lib/onesky/restclient.rb
+++ /dev/null
@@ -1,38 +0,0 @@
-# Monkey patching RestClient::Request.process_url_params
-# To support array in URL params
-# RestClient.get('http://www.example.com', params: {weekday: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri']})
-# => GET http://www.example.com?weekday[]=Mon&weekday[]=Tue&weekday[]=Wed&weekday[]=Thu&weekday[]=Fri
-
-module RestClient
-  class Request
-
-    def process_url_params url, headers
-      url_params = {}
-      headers.delete_if do |key, value|
-        if 'params' == key.to_s.downcase && value.is_a?(Hash)
-          url_params.merge! value
-          true
-        else
-          false
-        end
-      end
-      unless url_params.empty?
-        query_string = url_params.collect { |k, v| build_url_params(k, v) }.join('&')
-        url + "?#{query_string}"
-      else
-        url
-      end
-    end
-
-    private
-
-    def build_url_params key, value
-      if value.is_a?(Array)
-        value.map { |v| "#{key.to_s}[]=#{CGI::escape(v.to_s)}" }.join('&')
-      else
-        "#{key.to_s}=#{CGI::escape(value.to_s)}"
-      end
-    end
-
-  end
-end
diff --git a/lib/onesky/version.rb b/lib/onesky/version.rb
index 9813e06..6409e53 100644
--- a/lib/onesky/version.rb
+++ b/lib/onesky/version.rb
@@ -1,3 +1,3 @@
 module Onesky
-  VERSION = "1.0.1"
+  VERSION = "1.1.0"
 end
diff --git a/onesky-ruby.gemspec b/onesky-ruby.gemspec
index c96252b..4b602c4 100644
--- a/onesky-ruby.gemspec
+++ b/onesky-ruby.gemspec
@@ -13,6 +13,8 @@ Gem::Specification.new do |spec|
   spec.homepage      = "http://github.com/onesky/onesky-ruby"
   spec.license       = "MIT"
 
+  spec.required_ruby_version = '>= 2.0.0'
+
   spec.files         = `git ls-files -z`.split("\x0")
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})