diff --git a/modules/swagger-codegen/src/main/resources/ruby/monkey.mustache b/modules/swagger-codegen/src/main/resources/ruby/monkey.mustache
index 0751d42ce63..2f5b96f884f 100644
--- a/modules/swagger-codegen/src/main/resources/ruby/monkey.mustache
+++ b/modules/swagger-codegen/src/main/resources/ruby/monkey.mustache
@@ -1,39 +1,3 @@
-class Object
-  unless Object.method_defined? :blank?
-    def blank?
-      respond_to?(:empty?) ? empty? : !self
-    end
-  end
-
-  unless Object.method_defined? :present?
-    def present?
-      !blank?
-    end
-  end
-end
-
-class String
-  unless String.method_defined? :underscore
-    def underscore
-      self.gsub(/::/, '/').
-      gsub(/([A-Z]+)([A-Z][a-z])/,'\1_\2').
-      gsub(/([a-z\d])([A-Z])/,'\1_\2').
-      tr("-", "_").
-      downcase
-    end
-  end
-
-  unless String.method_defined? :camelize
-    def camelize(first_letter_in_uppercase = true)
-      if first_letter_in_uppercase != :lower
-        self.to_s.gsub(/\/(.?)/) { "::#{$1.upcase}" }.gsub(/(?:^|_)(.)/) { $1.upcase }
-      else
-        self.to_s[0].chr.downcase + camelize(self)[1..-1]
-      end
-    end
-  end
-end
-
 class Hash
   unless Hash.method_defined? :stringify_keys
     def stringify_keys
@@ -64,19 +28,4 @@ class Hash
       self.replace(self.symbolize_keys)
     end
   end
-
-  unless Hash.method_defined? :symbolize_and_underscore_keys
-    def symbolize_and_underscore_keys
-      inject({}) do |options, (key, value)|
-        options[(key.to_s.underscore.to_sym rescue key) || key] = value
-        options
-      end
-    end
-  end
-
-  unless Hash.method_defined? :symbolize_and_underscore_keys!
-    def symbolize_and_underscore_keys!
-      self.replace(self.symbolize_and_underscore_keys)
-    end
-  end
 end
diff --git a/modules/swagger-codegen/src/main/resources/ruby/swagger.mustache b/modules/swagger-codegen/src/main/resources/ruby/swagger.mustache
index f07bdec9c50..e11301327e0 100644
--- a/modules/swagger-codegen/src/main/resources/ruby/swagger.mustache
+++ b/modules/swagger-codegen/src/main/resources/ruby/swagger.mustache
@@ -37,7 +37,7 @@ module {{moduleName}}
       end
 
       def authenticated?
-        Swagger.configuration.auth_token.present?
+        !Swagger.configuration.auth_token.nil?
       end
 
       def de_authenticate
@@ -47,7 +47,7 @@ module {{moduleName}}
       def authenticate
         return if Swagger.authenticated?
 
-        if Swagger.configuration.username.blank? || Swagger.configuration.password.blank?
+        if Swagger.configuration.username.nil? || Swagger.configuration.password.nil?
           raise ApiError, "Username and password are required to authenticate."
         end
 
diff --git a/modules/swagger-codegen/src/main/resources/ruby/swagger/configuration.mustache b/modules/swagger-codegen/src/main/resources/ruby/swagger/configuration.mustache
index 1c7cb52c50f..0e693b23715 100644
--- a/modules/swagger-codegen/src/main/resources/ruby/swagger/configuration.mustache
+++ b/modules/swagger-codegen/src/main/resources/ruby/swagger/configuration.mustache
@@ -3,7 +3,7 @@ require 'logger'
 module {{moduleName}}
   module Swagger
     class Configuration
-      attr_accessor :scheme, :host, :base_path, :user_agent, :format, :auth_token, :inject_format, :force_ending_format, :camelize_params
+      attr_accessor :scheme, :host, :base_path, :user_agent, :format, :auth_token, :inject_format, :force_ending_format
 
       # Defines the username used with HTTP basic authentication.
       #
@@ -69,7 +69,6 @@ module {{moduleName}}
         @user_agent = "ruby-swagger-#{Swagger::VERSION}"
         @inject_format = false
         @force_ending_format = false
-        @camelize_params = true
 
         @api_key = {}
         @api_key_prefix = {}
diff --git a/modules/swagger-codegen/src/main/resources/ruby/swagger/request.mustache b/modules/swagger-codegen/src/main/resources/ruby/swagger/request.mustache
index c05167c7fdc..bd5b2991cab 100644
--- a/modules/swagger-codegen/src/main/resources/ruby/swagger/request.mustache
+++ b/modules/swagger-codegen/src/main/resources/ruby/swagger/request.mustache
@@ -1,15 +1,14 @@
+require 'uri'
+require 'typhoeus'
+
 module {{moduleName}}
   module Swagger
     class Request
-      require 'uri'
-      require 'addressable/uri'
-      require 'typhoeus'
-
       attr_accessor :host, :path, :format, :params, :body, :http_method, :headers, :form_params, :auth_names, :response
 
       # All requests must have an HTTP method and a path
       # Optionals parameters are :params, :headers, :body, :format, :host
-      def initialize(http_method, path, attributes={})
+      def initialize(http_method, path, attributes = {})
         attributes[:format] ||= Swagger.configuration.format
         attributes[:params] ||= {}
 
@@ -27,11 +26,10 @@ module {{moduleName}}
           attributes[:headers].merge!({:auth_token => Swagger.configuration.auth_token})
         end
 
-        self.http_method = http_method.to_sym
+        self.http_method = http_method.to_sym.downcase
         self.path = path
-        attributes.each do |name, value|
-          send("#{name.to_s.underscore.to_sym}=", value)
-        end
+
+        attributes.each { |name, value| send "#{name}=", value }
 
         update_params_for_auth!
       end
@@ -54,26 +52,18 @@ module {{moduleName}}
       # Get API key (with prefix if set).
       # @param [String] param_name the parameter name of API key auth
       def get_api_key_with_prefix(param_name)
-        if Swagger.configuration.api_key_prefix[param_name].present?
+        if Swagger.configuration.api_key_prefix[param_name]
           "#{Swagger.configuration.api_key_prefix[param_name]} #{Swagger.configuration.api_key[param_name]}"
         else
           Swagger.configuration.api_key[param_name]
         end
       end
 
-      # Construct a base URL
+      # Construct the request URL.
       def url(options = {})
-        u = Addressable::URI.new(
-          :scheme => Swagger.configuration.scheme,
-          :host => Swagger.configuration.host,
-          :path => self.interpreted_path,
-          :query => self.query_string.sub(/\?/, '')
-        ).to_s
-
-        # Drop trailing question mark, if present
-        u.sub! /\?$/, ''
-
-        u
+        _path = self.interpreted_path
+        _path = "/#{_path}" unless _path.start_with?('/')
+        "#{Swagger.configuration.scheme}://#{Swagger.configuration.host}#{_path}"
       end
 
       # Iterate over the params hash, injecting any path values into the path string
@@ -104,18 +94,6 @@ module {{moduleName}}
         URI.encode [Swagger.configuration.base_path, p].join("/").gsub(/\/+/, '/')
       end
 
-      # Massage the request body into a state of readiness
-      # If body is a hash, camelize all keys then convert to a json string
-      def body=(value)
-        if value.is_a?(Hash)
-          value = value.inject({}) do |memo, (k,v)|
-            memo[k.to_s.camelize(:lower).to_sym] = v
-            memo
-          end
-        end
-        @body = value
-      end
-
       # If body is an object, JSONify it before making the actual request.
       # For form parameters, remove empty value
       def outgoing_body
@@ -138,70 +116,20 @@ module {{moduleName}}
         data
       end
 
-      # Construct a query string from the query-string-type params
-      def query_string
-        # Iterate over all params,
-        # .. removing the ones that are part of the path itself.
-        # .. stringifying values so Addressable doesn't blow up.
-        query_values = {}
-        self.params.each_pair do |key, value|
-          next if self.path.include? "{#{key}}"                                   # skip path params
-          next if value.blank? && value.class != FalseClass                       # skip empties
-          if Swagger.configuration.camelize_params
-            key = key.to_s.camelize(:lower).to_sym
-          end
-          query_values[key] = value.to_s
-        end
-
-        # We don't want to end up with '?' as our query string
-        # if there aren't really any params
-        return "" if query_values.blank?
-
-        # Addressable requires query_values to be set after initialization..
-        qs = Addressable::URI.new
-        qs.query_values = query_values
-        qs.to_s
-      end
-
       def make
         request_options = {
+          :method => self.http_method,
+          :headers => self.headers.stringify_keys,
           :ssl_verifypeer => Swagger.configuration.verify_ssl,
           :cainfo => Swagger.configuration.ssl_ca_cert,
-          :headers => self.headers.stringify_keys,
           :verbose => Swagger.configuration.debug
         }
-        raw = case self.http_method.to_sym
-        when :get,:GET
-          Typhoeus::Request.get(
-            self.url,
-            request_options
-          )
 
-        when :post,:POST
-          Typhoeus::Request.post(
-            self.url,
-            request_options.merge(:body => self.outgoing_body)
-          )
-
-        when :patch,:PATCH
-          Typhoeus::Request.patch(
-            self.url,
-            request_options.merge(:body => self.outgoing_body)
-          )
-
-        when :put,:PUT
-          Typhoeus::Request.put(
-            self.url,
-            request_options.merge(:body => self.outgoing_body)
-          )
-
-        when :delete,:DELETE
-          Typhoeus::Request.delete(
-            self.url,
-            request_options.merge(:body => self.outgoing_body)
-          )
+        if [:post, :patch, :put, :delete].include?(self.http_method)
+          request_options.update :body => self.outgoing_body
         end
 
+        raw = Typhoeus::Request.new(self.url, request_options).run
         @response = Response.new(raw)
 
         if Swagger.configuration.debug
@@ -217,16 +145,17 @@ module {{moduleName}}
                             :response_body => @response.body),
                @response.status_message
         end
+
         @response
       end
 
       def response_code_pretty
-        return unless @response.present?
+        return unless @response
         @response.code.to_s
       end
 
       def response_headers_pretty
-        return unless @response.present?
+        return unless @response
         # JSON.pretty_generate(@response.headers).gsub(/\n/, '<br/>') # <- This was for RestClient
         @response.headers.gsub(/\n/, '<br/>') # <- This is for Typhoeus
       end
diff --git a/modules/swagger-codegen/src/main/resources/ruby/swagger/response.mustache b/modules/swagger-codegen/src/main/resources/ruby/swagger/response.mustache
index d712aa29540..575bc5d0ae0 100644
--- a/modules/swagger-codegen/src/main/resources/ruby/swagger/response.mustache
+++ b/modules/swagger-codegen/src/main/resources/ruby/swagger/response.mustache
@@ -30,7 +30,7 @@ module {{moduleName}}
       #
       # @param [String] return_type some examples: "User", "Array[User]", "Hash[String,Integer]"
       def deserialize(return_type)
-        return nil if body.blank?
+        return nil if body.nil? || body.empty?
 
         # ensuring a default content type
         content_type = raw.headers_hash['Content-Type'] || 'application/json'
@@ -106,9 +106,11 @@ module {{moduleName}}
       end
 
       def pretty_body
-        return unless body.present?
-        case format
-        when 'json' then JSON.pretty_generate(JSON.parse(body)).gsub(/\n/, '<br/>')
+        return unless body
+        if format == 'json'
+          JSON.pretty_generate(JSON.parse(body)).gsub(/\n/, '<br/>')
+        else
+          body
         end
       end
 
diff --git a/modules/swagger-codegen/src/main/resources/ruby/swagger_client.gemspec.mustache b/modules/swagger-codegen/src/main/resources/ruby/swagger_client.gemspec.mustache
index 8ae4bfa1a49..38d70c07dd5 100644
--- a/modules/swagger-codegen/src/main/resources/ruby/swagger_client.gemspec.mustache
+++ b/modules/swagger-codegen/src/main/resources/ruby/swagger_client.gemspec.mustache
@@ -14,7 +14,6 @@ Gem::Specification.new do |s|
   s.license     = "Apache-2.0"
 
   s.add_runtime_dependency 'typhoeus', '~> 0.2', '>= 0.2.1'
-  s.add_runtime_dependency 'addressable', '~> 2.2', '>= 2.2.4'
   s.add_runtime_dependency 'json', '~> 1.4', '>= 1.4.6'
 
   s.add_development_dependency 'rspec', '~> 3.2', '>= 3.2.0'