diff --git a/packages/js/components/changelog/update-date-time-picker-control-onchange b/packages/js/components/changelog/update-date-time-picker-control-onchange
new file mode 100644
index 00000000000..21e87a4f6b3
--- /dev/null
+++ b/packages/js/components/changelog/update-date-time-picker-control-onchange
@@ -0,0 +1,4 @@
+Significance: minor
+Type: tweak
+
+Fix DateTimePickerControl's onChange date arg to only be a string (TypeScript).
diff --git a/packages/js/components/src/date-time-picker-control/date-time-picker-control.tsx b/packages/js/components/src/date-time-picker-control/date-time-picker-control.tsx
index f7d82d550d1..3086d407862 100644
--- a/packages/js/components/src/date-time-picker-control/date-time-picker-control.tsx
+++ b/packages/js/components/src/date-time-picker-control/date-time-picker-control.tsx
@@ -20,7 +20,7 @@ export type DateTimePickerControlProps = {
 	disabled?: boolean;
 	is12Hour?: boolean;
 	onChange: ( date: string ) => void;
-} & React.HTMLAttributes< HTMLDivElement >;
+} & Omit< React.HTMLAttributes< HTMLDivElement >, 'onChange' >;
 
 export const DateTimePickerControl: React.FC< DateTimePickerControlProps > = ( {
 	currentDate,