diff --git a/src/components/Dropdown/Dropdown.tsx b/src/components/Dropdown/Dropdown.tsx
index 5c6922de2bfd6d..a8cdcfea8f83fc 100644
--- a/src/components/Dropdown/Dropdown.tsx
+++ b/src/components/Dropdown/Dropdown.tsx
@@ -50,7 +50,8 @@ export class Dropdown extends React.Component<IDropdownProps, any> {
 
   public componentWillReceiveProps(newProps: IDropdownProps) {
     this.setState({
-      selectedIndex: this._getSelectedIndex(newProps.options, newProps.selectedKey)
+      selectedIndex: this._getSelectedIndex(newProps.options, newProps.selectedKey),
+      isDisabled: newProps.isDisabled
     });
   }