diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index d4bad096..74ab613e 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -1,5 +1,5 @@
 # This configuration was generated by `rubocop --auto-gen-config`
-# on 2014-11-20 15:23:00 +0200 using RuboCop version 0.27.0.
+# on 2014-11-28 11:04:19 -0500 using RuboCop version 0.27.0.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new
@@ -7,18 +7,18 @@
 
 # Offense count: 8
 Metrics/AbcSize:
-  Max: 330
+  Max: 331
 
 # Offense count: 1
 # Configuration parameters: CountComments.
 Metrics/ClassLength:
-  Max: 390
+  Max: 392
 
 # Offense count: 4
 Metrics/CyclomaticComplexity:
-  Max: 92
+  Max: 93
 
-# Offense count: 203
+# Offense count: 204
 # Configuration parameters: AllowURI, URISchemes.
 Metrics/LineLength:
   Max: 254
@@ -26,7 +26,7 @@ Metrics/LineLength:
 # Offense count: 13
 # Configuration parameters: CountComments.
 Metrics/MethodLength:
-  Max: 355
+  Max: 357
 
 # Offense count: 4
 Metrics/PerceivedComplexity:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8f732f2e..45829ea2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@
 * [#166](https://github.com/tim-vandecasteele/grape-swagger/pull/166): Ensure compatibility with Grape 0.8.0 or newer - [@dblock](https://github.com/dblock).
 * [#174](https://github.com/tim-vandecasteele/grape-swagger/pull/172): Fix problem with using prefix name somewhere in api paths - [@grzesiek](https://github.com/grzesiek).
 * [#176](https://github.com/tim-vandecasteele/grape-swagger/pull/176): Added ability to load nested models recursively - [@sergey-verevkin](https://github.com/sergey-verevkin).
+* [#179](https://github.com/tim-vandecasteele/grape-swagger/pull/179): Document `Virtus::Attribute::Boolean` as boolean - [@eashman](https://github.com/eashman), [@dblock](https://github.com/dblock).
 
 * Your contribution here.
 
diff --git a/lib/grape-swagger.rb b/lib/grape-swagger.rb
index 70bba592..7b16061e 100644
--- a/lib/grape-swagger.rb
+++ b/lib/grape-swagger.rb
@@ -243,6 +243,8 @@ def parse_params(params, path, method)
 
                 raw_data_type = value.is_a?(Hash) ? (value[:type] || 'string').to_s : 'string'
                 data_type     = case raw_data_type
+                                when 'Virtus::Attribute::Boolean'
+                                  'boolean'
                                 when 'Boolean', 'Date', 'Integer', 'String'
                                   raw_data_type.downcase
                                 when 'BigDecimal'
diff --git a/spec/boolean_params_spec.rb b/spec/boolean_params_spec.rb
new file mode 100644
index 00000000..e94d4449
--- /dev/null
+++ b/spec/boolean_params_spec.rb
@@ -0,0 +1,30 @@
+require 'spec_helper'
+
+describe 'Boolean Params' do
+  def app
+    Class.new(Grape::API) do
+      format :json
+
+      params do
+        requires :a_boolean, type: Virtus::Attribute::Boolean
+      end
+      post :splines do
+      end
+
+      add_swagger_documentation
+    end
+  end
+
+  subject do
+    get '/swagger_doc/splines.json'
+    expect(last_response.status).to eq 200
+    body = JSON.parse last_response.body
+    body['apis'].first['operations'].first['parameters']
+  end
+
+  it 'converts boolean types' do
+    expect(subject).to eq [
+      { 'paramType' => 'form', 'name' => 'a_boolean', 'description' => nil, 'type' => 'boolean', 'required' => true, 'allowMultiple' => false }
+    ]
+  end
+end