diff --git a/packages/react-day-picker/src/types/DayPickerBase.ts b/packages/react-day-picker/src/types/DayPickerBase.ts
index d51dd2a134..54bba229c0 100644
--- a/packages/react-day-picker/src/types/DayPickerBase.ts
+++ b/packages/react-day-picker/src/types/DayPickerBase.ts
@@ -175,15 +175,15 @@ export interface DayPickerBase {
   /**
    * Apply the `disabled` modifier to the matching days.
    */
-  disabled?: Matcher | Matcher[];
+  disabled?: Matcher | Matcher[] | undefined;
   /**
    * Apply the `hidden` modifier to the matching days. Will hide them from the
    * calendar.
    */
-  hidden?: Matcher | Matcher[];
+  hidden?: Matcher | Matcher[] | undefined;
 
   /** Apply the `selected` modifier to the matching days. */
-  selected?: Matcher | Matcher[];
+  selected?: Matcher | Matcher[] | undefined;
 
   /**
    * The today’s date. Default is the current date. This Date will get the
diff --git a/packages/react-day-picker/src/types/DayPickerMultiple.ts b/packages/react-day-picker/src/types/DayPickerMultiple.ts
index 67289a2f89..dfc7ff146b 100644
--- a/packages/react-day-picker/src/types/DayPickerMultiple.ts
+++ b/packages/react-day-picker/src/types/DayPickerMultiple.ts
@@ -9,7 +9,7 @@ import { SelectMultipleEventHandler } from './EventHandlers';
 export interface DayPickerMultipleProps extends DayPickerBase {
   mode: 'multiple';
   /** The selected days. */
-  selected?: Date[];
+  selected?: Date[] | undefined;
   /** Event fired when a days added or removed to the selection. */
   onSelect?: SelectMultipleEventHandler;
   /** The minimum amount of days that can be selected. */
diff --git a/packages/react-day-picker/src/types/DayPickerRange.ts b/packages/react-day-picker/src/types/DayPickerRange.ts
index 7ffb64cafb..8d2a4ec047 100644
--- a/packages/react-day-picker/src/types/DayPickerRange.ts
+++ b/packages/react-day-picker/src/types/DayPickerRange.ts
@@ -10,7 +10,7 @@ import { DateRange } from './Matchers';
 export interface DayPickerRangeProps extends DayPickerBase {
   mode: 'range';
   /** The selected range of days. */
-  selected?: DateRange;
+  selected?: DateRange | undefined;
   /** Event fired when a range (or a part of the range) is selected. */
   onSelect?: SelectRangeEventHandler;
   /** The minimum amount of days that can be selected. */