diff --git a/types/material-ui/index.d.ts b/types/material-ui/index.d.ts
index a7b13f2bb4..16c6b5dce7 100644
--- a/types/material-ui/index.d.ts
+++ b/types/material-ui/index.d.ts
@@ -942,6 +942,8 @@ declare namespace __MaterialUI {
             utils?: propTypes.utils;
         }
         export class DatePicker extends React.Component<DatePickerProps> {
+            focus(): void;
+            openDialog(): void;
         }
 
         interface DatePickerDialogProps {