diff --git a/types/react-flatpickr/index.d.ts b/types/react-flatpickr/index.d.ts
index c867527b06..0ec95e5159 100644
--- a/types/react-flatpickr/index.d.ts
+++ b/types/react-flatpickr/index.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for react-flatpickr 3.6
+// Type definitions for react-flatpickr 3.7
 // Project: https://github.com/coderhaoxin/react-flatpickr
 // Definitions by: begincalendar <https://github.com/begincalendar>
 //                 snaveevans <https://github.com/snaveevans>
@@ -20,6 +20,7 @@ export interface DateTimePickerProps {
     onValueUpdate?: flatpickr.Options.Hook;
     onDayCreate?: flatpickr.Options.Hook;
     value?: string | Date | number | ReadonlyArray<string | Date | number>;
+    className?: string;
 }
 
 export default class DatePicker extends Component<DateTimePickerProps> {}
diff --git a/types/react-flatpickr/react-flatpickr-tests.tsx b/types/react-flatpickr/react-flatpickr-tests.tsx
index 7a1c64c266..b80fd83888 100644
--- a/types/react-flatpickr/react-flatpickr-tests.tsx
+++ b/types/react-flatpickr/react-flatpickr-tests.tsx
@@ -4,6 +4,8 @@ import DatePicker from "react-flatpickr";
 
 const noParamsElement = <DatePicker />;
 
+const classNameElement = <DatePicker className={"test"} />;
+
 const defaultValueElement = <DatePicker defaultValue={"Default value"} />;
 
 const options = {