diff --git a/README.md b/README.md
index e8a6b51..a1d96c4 100644
--- a/README.md
+++ b/README.md
@@ -106,6 +106,7 @@ export class AppComponent implements OnInit {
 | singleSelection                | Boolean    | Mode of this component. If set `true` user can select more than one option.                                                                                                                                                                                                                                                                              | false               |
 | placeholder                    | String     | Text to be show in the dropdown, when no items are selected.                                                                                                                                                                                                                                                                                             | 'Select'            |
 | disabled                       | Boolean    | Disable the dropdown                                                                                                                                                                                                                                                                                                                                     | false               |
+| disabledField                  | String     | Define a custom field name that can be used to disable an item. | 'isDisabled' |
 | data                           | Array<any> | Array of items from which to select. Should be an array of objects with id and `text` properties. You can also use custom properties. In that case you need to map idField and `textField` properties. As convenience, you may also pass an array of strings, in which case the same string is used for both the ID and the text(no mapping is required) | n/a                 |
 | idField                        | String     | map id field in case of custom array of object                                                                                                                                                                                                                                                                                                           | 'id'                |
 | textField                      | String     | map text field in case of custom array of object                                                                                                                                                                                                                                                                                                         | 'text'              |