diff --git a/README.md b/README.md
index 368198b8..b8b1a7c5 100644
--- a/README.md
+++ b/README.md
@@ -72,6 +72,13 @@ resource "Account" do
       response_body.should == accounts.reverse
       status.should == 200
     end
+
+    example "Get a list of all accounts with certain types" do
+      do_request(:type_in => ["pending", "closed"])
+
+      response_body.should == accounts.inactive
+      status.should == 200
+    end
   end
 
   get "/accounts/:id" do
diff --git a/lib/rspec_api_documentation/dsl/endpoint.rb b/lib/rspec_api_documentation/dsl/endpoint.rb
index 76ba1402..5547edf3 100644
--- a/lib/rspec_api_documentation/dsl/endpoint.rb
+++ b/lib/rspec_api_documentation/dsl/endpoint.rb
@@ -46,8 +46,16 @@ def do_request(extra_params = {})
 
     def query_string
       query = params.to_a.map do |param|
-        param.map! { |a| CGI.escape(a.to_s) }
-        param.join("=")
+        if param[1].present? && param[1].is_a?(Array)
+          param_val = []
+          param[1].each do |val|
+            param_val << ["#{param[0].gsub('[]','')}[]", val].map { |a| CGI.escape(a.to_s) }.join("=")
+          end
+          param_val
+        else
+          param.map! { |a| CGI.escape(a.to_s) }
+          param.join("=")
+        end
       end
       query.join("&")
     end
diff --git a/spec/dsl_spec.rb b/spec/dsl_spec.rb
index c7a1420c..b0257928 100644
--- a/spec/dsl_spec.rb
+++ b/spec/dsl_spec.rb
@@ -403,6 +403,14 @@
 
         example_request "should take an optional parameter hash", :order_type => "big"
       end
+
+      context "Array options for do_request" do
+        before do
+          client.should_receive(:post).with("/orders", {"pizza_type" => ["big", "tasty"] }, nil)
+        end
+
+        example_request "should take an optional parameter hash", :pizza_type => ["big", "tasty"]
+      end
     end
   end