diff --git a/src/__celerity_resource_map__.php b/src/__celerity_resource_map__.php
index 71d4547559..bbf1688cf3 100644
--- a/src/__celerity_resource_map__.php
+++ b/src/__celerity_resource_map__.php
@@ -72,7 +72,7 @@ celerity_register_resource_map(array(
   ),
   'aphront-form-view-css' =>
   array(
-    'uri' => '/res/16af59d8/rsrc/css/aphront/form-view.css',
+    'uri' => '/res/4d1d9d08/rsrc/css/aphront/form-view.css',
     'type' => 'css',
     'requires' =>
     array(
@@ -1682,6 +1682,30 @@ celerity_register_resource_map(array(
       'uri' => '/res/pkg/4e7acf1a/core.pkg.js',
       'type' => 'js',
     ),
+    '831e959b' =>
+    array(
+      'name' => 'core.pkg.css',
+      'symbols' =>
+      array(
+        0 => 'phabricator-core-css',
+        1 => 'phabricator-core-buttons-css',
+        2 => 'phabricator-standard-page-view',
+        3 => 'aphront-dialog-view-css',
+        4 => 'aphront-form-view-css',
+        5 => 'aphront-panel-view-css',
+        6 => 'aphront-side-nav-view-css',
+        7 => 'aphront-table-view-css',
+        8 => 'aphront-crumbs-view-css',
+        9 => 'aphront-tokenizer-control-css',
+        10 => 'aphront-typeahead-control-css',
+        11 => 'aphront-list-filter-view-css',
+        12 => 'phabricator-directory-css',
+        13 => 'phabricator-remarkup-css',
+        14 => 'syntax-highlighting-css',
+      ),
+      'uri' => '/res/pkg/831e959b/core.pkg.css',
+      'type' => 'css',
+    ),
     '8710f5ac' =>
     array(
       'name' => 'differential.pkg.js',
@@ -1741,30 +1765,6 @@ celerity_register_resource_map(array(
       'uri' => '/res/pkg/bbe7e6f7/typeahead.pkg.js',
       'type' => 'js',
     ),
-    'e1e8a800' =>
-    array(
-      'name' => 'core.pkg.css',
-      'symbols' =>
-      array(
-        0 => 'phabricator-core-css',
-        1 => 'phabricator-core-buttons-css',
-        2 => 'phabricator-standard-page-view',
-        3 => 'aphront-dialog-view-css',
-        4 => 'aphront-form-view-css',
-        5 => 'aphront-panel-view-css',
-        6 => 'aphront-side-nav-view-css',
-        7 => 'aphront-table-view-css',
-        8 => 'aphront-crumbs-view-css',
-        9 => 'aphront-tokenizer-control-css',
-        10 => 'aphront-typeahead-control-css',
-        11 => 'aphront-list-filter-view-css',
-        12 => 'phabricator-directory-css',
-        13 => 'phabricator-remarkup-css',
-        14 => 'syntax-highlighting-css',
-      ),
-      'uri' => '/res/pkg/e1e8a800/core.pkg.css',
-      'type' => 'css',
-    ),
     'e4f8b52c' =>
     array(
       'name' => 'differential.pkg.css',
@@ -1789,16 +1789,16 @@ celerity_register_resource_map(array(
   ),
   'reverse' =>
   array(
-    'aphront-crumbs-view-css' => 'e1e8a800',
-    'aphront-dialog-view-css' => 'e1e8a800',
-    'aphront-form-view-css' => 'e1e8a800',
+    'aphront-crumbs-view-css' => '831e959b',
+    'aphront-dialog-view-css' => '831e959b',
+    'aphront-form-view-css' => '831e959b',
     'aphront-headsup-action-list-view-css' => 'e4f8b52c',
-    'aphront-list-filter-view-css' => 'e1e8a800',
-    'aphront-panel-view-css' => 'e1e8a800',
-    'aphront-side-nav-view-css' => 'e1e8a800',
-    'aphront-table-view-css' => 'e1e8a800',
-    'aphront-tokenizer-control-css' => 'e1e8a800',
-    'aphront-typeahead-control-css' => 'e1e8a800',
+    'aphront-list-filter-view-css' => '831e959b',
+    'aphront-panel-view-css' => '831e959b',
+    'aphront-side-nav-view-css' => '831e959b',
+    'aphront-table-view-css' => '831e959b',
+    'aphront-tokenizer-control-css' => '831e959b',
+    'aphront-typeahead-control-css' => '831e959b',
     'differential-changeset-view-css' => 'e4f8b52c',
     'differential-core-view-css' => 'e4f8b52c',
     'differential-inline-comment-editor' => '8710f5ac',
@@ -1847,16 +1847,16 @@ celerity_register_resource_map(array(
     'javelin-vector' => 'b164acea',
     'javelin-workflow' => '4e7acf1a',
     'phabricator-content-source-view-css' => 'e4f8b52c',
-    'phabricator-core-buttons-css' => 'e1e8a800',
-    'phabricator-core-css' => 'e1e8a800',
-    'phabricator-directory-css' => 'e1e8a800',
+    'phabricator-core-buttons-css' => '831e959b',
+    'phabricator-core-css' => '831e959b',
+    'phabricator-directory-css' => '831e959b',
     'phabricator-drag-and-drop-file-upload' => '8710f5ac',
     'phabricator-keyboard-shortcut' => '4e7acf1a',
     'phabricator-keyboard-shortcut-manager' => '4e7acf1a',
     'phabricator-object-selector-css' => 'e4f8b52c',
-    'phabricator-remarkup-css' => 'e1e8a800',
+    'phabricator-remarkup-css' => '831e959b',
     'phabricator-shaped-request' => '8710f5ac',
-    'phabricator-standard-page-view' => 'e1e8a800',
-    'syntax-highlighting-css' => 'e1e8a800',
+    'phabricator-standard-page-view' => '831e959b',
+    'syntax-highlighting-css' => '831e959b',
   ),
 ));
diff --git a/src/applications/maniphest/auxiliaryfield/default/ManiphestAuxiliaryFieldDefaultSpecification.php b/src/applications/maniphest/auxiliaryfield/default/ManiphestAuxiliaryFieldDefaultSpecification.php
index d6bbfc7022..3bed2b83be 100644
--- a/src/applications/maniphest/auxiliaryfield/default/ManiphestAuxiliaryFieldDefaultSpecification.php
+++ b/src/applications/maniphest/auxiliaryfield/default/ManiphestAuxiliaryFieldDefaultSpecification.php
@@ -26,11 +26,14 @@ class ManiphestAuxiliaryFieldDefaultSpecification
   private $fieldType;
 
   private $selectOptions;
+  private $checkboxLabel;
+  private $checkboxValue;
   private $error;
 
   const TYPE_SELECT = 'select';
   const TYPE_STRING = 'string';
   const TYPE_INT    = 'int';
+  const TYPE_BOOL   = 'bool';
 
   public function getFieldType() {
     return $this->fieldType;
@@ -68,35 +71,62 @@ class ManiphestAuxiliaryFieldDefaultSpecification
     return $this->required;
   }
 
+  public function setCheckboxLabel($checkbox_label) {
+    $this->checkboxLabel = $checkbox_label;
+    return $this;
+  }
+
+  public function getCheckboxLabel() {
+    return $this->checkboxLabel;
+  }
+
+  public function setCheckboxValue($checkbox_value) {
+    $this->checkboxValue = $checkbox_value;
+    return $this;
+  }
+
+  public function getCheckboxValue() {
+    return $this->checkboxValue;
+  }
+
   public function renderControl() {
     $control = null;
 
-    switch ($this->getFieldType()) {
+    $type = $this->getFieldType();
+    switch ($type) {
       case self::TYPE_INT:
-
         $control = new AphrontFormTextControl();
         break;
-
       case self::TYPE_STRING:
         $control = new AphrontFormTextControl();
         break;
-
       case self::TYPE_SELECT:
         $control = new AphrontFormSelectControl();
         $control->setOptions($this->getSelectOptions());
         break;
-
+      case self::TYPE_BOOL:
+        $control = new AphrontFormCheckboxControl();
+        break;
       default:
+        $label = $this->getLabel();
         throw new ManiphestAuxiliaryFieldTypeException(
-          $this->getFieldType().' is not a valid type for '.$this->getLabel()
-        );
+          "Field type '{$type}' is not a valid type (for field '{$label}').");
         break;
     }
 
-    $control->setValue($this->getValue());
+    if ($type == self::TYPE_BOOL) {
+      $control->addCheckbox(
+        'auxiliary['.$this->getAuxiliaryKey().']',
+        1,
+        $this->getCheckboxLabel(),
+        (bool)$this->getValue());
+    } else {
+      $control->setValue($this->getValue());
+      $control->setName('auxiliary['.$this->getAuxiliaryKey().']');
+    }
+
     $control->setLabel($this->getLabel());
     $control->setCaption($this->getCaption());
-    $control->setName('auxiliary['.$this->getAuxiliaryKey().']');
     $control->setError($this->getError());
 
     return $control;
@@ -104,7 +134,7 @@ class ManiphestAuxiliaryFieldDefaultSpecification
 
   public function setValueFromRequest($request) {
     $aux_post_values = $request->getArr('auxiliary');
-    $this->setValue(idx($aux_post_values, $this->getAuxiliaryKey()));
+    $this->setValue(idx($aux_post_values, $this->getAuxiliaryKey(), ''));
   }
 
   public function getValueForStorage() {
@@ -123,17 +153,29 @@ class ManiphestAuxiliaryFieldDefaultSpecification
             $this->getLabel().' must be an integer value.'
           );
         }
-
         break;
-
+      case self::TYPE_BOOL:
+        return true;
       case self::TYPE_STRING:
         return true;
-        break;
-
       case self::TYPE_SELECT:
         return true;
-        break;
     }
   }
 
+  public function renderForDetailView() {
+    switch ($this->getFieldType()) {
+      case self::TYPE_BOOL:
+        if ($this->getValue()) {
+          return phutil_escape_html($this->getCheckboxValue());
+        } else {
+          return null;
+        }
+      case self::TYPE_SELECT:
+        $display = idx($this->getSelectOptions(), $this->getValue());
+        return phutil_escape_html($display);
+    }
+    return parent::renderForDetailView();
+  }
+
 }
diff --git a/src/applications/maniphest/auxiliaryfield/default/__init__.php b/src/applications/maniphest/auxiliaryfield/default/__init__.php
index 950c3a4495..d2dc5ac92e 100644
--- a/src/applications/maniphest/auxiliaryfield/default/__init__.php
+++ b/src/applications/maniphest/auxiliaryfield/default/__init__.php
@@ -9,9 +9,11 @@
 phutil_require_module('phabricator', 'applications/maniphest/auxiliaryfield/base');
 phutil_require_module('phabricator', 'applications/maniphest/auxiliaryfield/typeexception');
 phutil_require_module('phabricator', 'applications/maniphest/auxiliaryfield/validationexception');
+phutil_require_module('phabricator', 'view/form/control/checkbox');
 phutil_require_module('phabricator', 'view/form/control/select');
 phutil_require_module('phabricator', 'view/form/control/text');
 
+phutil_require_module('phutil', 'markup');
 phutil_require_module('phutil', 'utils');
 
 
diff --git a/src/applications/maniphest/extensions/task/ManiphestDefaultTaskExtensions.php b/src/applications/maniphest/extensions/task/ManiphestDefaultTaskExtensions.php
index 2793f83520..1ee4d049b9 100644
--- a/src/applications/maniphest/extensions/task/ManiphestDefaultTaskExtensions.php
+++ b/src/applications/maniphest/extensions/task/ManiphestDefaultTaskExtensions.php
@@ -33,6 +33,9 @@ final class ManiphestDefaultTaskExtensions
       $spec->setFieldType(idx($info, 'type'));
       $spec->setRequired(idx($info, 'required'));
 
+      $spec->setCheckboxLabel(idx($info, 'checkbox-label'));
+      $spec->setCheckboxValue(idx($info, 'checkbox-value', 1));
+
       if ($spec->getFieldType() ==
         ManiphestAuxiliaryFieldDefaultSpecification::TYPE_SELECT) {
         $spec->setSelectOptions(idx($info, 'options'));
diff --git a/src/docs/userguide/maniphest_custom.diviner b/src/docs/userguide/maniphest_custom.diviner
index c7f74fe64e..2f433a2e9a 100644
--- a/src/docs/userguide/maniphest_custom.diviner
+++ b/src/docs/userguide/maniphest_custom.diviner
@@ -44,11 +44,15 @@ Each array key must be unique, and is used to organize the internal storage of
 the field. These options are available:
 
   - **label**: Display label for the field on the edit and detail interfaces.
-  - **type**: Field type, one of **int**, **string** or **select**.
+  - **type**: Field type, one of **int**, **string**, **bool** or **select**.
   - **caption**: A caption to display underneath the field (optional).
   - **required**: True if the user should be required to provide a value.
   - **options**: If type is set to **select**, provide options for the dropdown
     as a dictionary.
+  - **checkbox-label**: If type is set to **bool**, an optional string to
+    show next to the checkbox.
+  - **checkbox-value**: If type is set to **bool**, the value to show on
+    the detail view when the checkbox is selected.
 
 = Advanced Field Customization =
 
diff --git a/webroot/rsrc/css/aphront/form-view.css b/webroot/rsrc/css/aphront/form-view.css
index f05e957d3f..40279e5c71 100644
--- a/webroot/rsrc/css/aphront/form-view.css
+++ b/webroot/rsrc/css/aphront/form-view.css
@@ -116,9 +116,11 @@ table.aphront-form-control-checkbox-layout {
 table.aphront-form-control-checkbox-layout th {
   padding-top: 2px;
   padding-left: 0.35em;
+  padding-bottom: 4px;
 }
 
 .aphront-form-control-checkbox-layout td input {
+  margin-top: 4px;
   width: auto;
 }