diff --git a/src/modules/Dropdown/Dropdown.d.ts b/src/modules/Dropdown/Dropdown.d.ts
index e432a550a9..e652855d71 100644
--- a/src/modules/Dropdown/Dropdown.d.ts
+++ b/src/modules/Dropdown/Dropdown.d.ts
@@ -66,7 +66,7 @@ export interface DropdownProps {
   defaultUpward?: boolean
 
   /** Initial value or value array if multiple. */
-  defaultValue?: string | number | (number | string)[]
+  defaultValue?: string | number | boolean | (number | string | boolean)[]
 
   /** A dropdown menu can open to the left or to the right. */
   direction?: 'left' | 'right'
diff --git a/src/modules/Dropdown/Dropdown.js b/src/modules/Dropdown/Dropdown.js
index 81ff95a78c..def550be39 100644
--- a/src/modules/Dropdown/Dropdown.js
+++ b/src/modules/Dropdown/Dropdown.js
@@ -109,7 +109,8 @@ export default class Dropdown extends Component {
     defaultValue: PropTypes.oneOfType([
       PropTypes.number,
       PropTypes.string,
-      PropTypes.arrayOf(PropTypes.oneOfType([PropTypes.string, PropTypes.number])),
+      PropTypes.bool,
+      PropTypes.arrayOf(PropTypes.oneOfType([PropTypes.string, PropTypes.number, PropTypes.bool])),
     ]),
 
     /** A dropdown menu can open to the left or to the right. */