diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3007741..3eb0f80 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 4.0.1
+
+- Added an extra widget builder to add more customizability, for example to add 'today' and 'close' buttons.
+
 ## 4.0.0
 
 - Controller has to be specified given to the [DragDownDateTimePicker] so the date can be changed outside of the widget itself.
diff --git a/lib/src/overlay_date_time_picker.dart b/lib/src/overlay_date_time_picker.dart
index 302fee6..27c0369 100644
--- a/lib/src/overlay_date_time_picker.dart
+++ b/lib/src/overlay_date_time_picker.dart
@@ -32,6 +32,7 @@ class OverlayDateTimePicker extends StatefulWidget {
     this.dateTimeConstraint = const DateTimeConstraint(),
     this.onNextPageButtonBuilder,
     this.onPreviousPageButtonBuilder,
+    this.extraWidgetBuilder,
     this.isShown = false,
   }) : assert(child != null || buttonBuilder != null);
 
@@ -96,6 +97,9 @@ class OverlayDateTimePicker extends StatefulWidget {
   final Widget Function(void Function()? onPressed)?
       onPreviousPageButtonBuilder;
 
+  /// a [Widget] that can add custom widgets beneath the [OverlayDateTimeContent] for enhanced functionality
+  final Widget? extraWidgetBuilder;
+
   @override
   State<OverlayDateTimePicker> createState() => _OverlayDateTimePickerState();
 }
@@ -241,6 +245,7 @@ class _OverlayDateTimePickerState extends State<OverlayDateTimePicker> {
             dateTimeConstraint: widget.dateTimeConstraint,
             onNextPageButtonChild: widget.onNextPageButtonBuilder,
             onPreviousPageButtonChild: widget.onPreviousPageButtonBuilder,
+            extraWidgetBuilder: widget.extraWidgetBuilder,
           ),
         ),
       ),
diff --git a/lib/src/widgets/overlay_date_time_picker/overlay.dart b/lib/src/widgets/overlay_date_time_picker/overlay.dart
index ddcf972..394fcae 100644
--- a/lib/src/widgets/overlay_date_time_picker/overlay.dart
+++ b/lib/src/widgets/overlay_date_time_picker/overlay.dart
@@ -25,6 +25,7 @@ class OverlayDateTimeContent extends StatefulWidget {
     required this.dateTimeConstraint,
     required this.onPreviousPageButtonChild,
     required this.onNextPageButtonChild,
+    this.extraWidgetBuilder,
   });
 
   final DateTimePickerTheme theme;
@@ -35,6 +36,7 @@ class OverlayDateTimeContent extends StatefulWidget {
   final bool showWeekDays;
   final DateTimeConstraint dateTimeConstraint;
 
+  final Widget? extraWidgetBuilder;
   final Widget Function(void Function()? onPressed)? onNextPageButtonChild;
   final Widget Function(void Function()? onPressed)? onPreviousPageButtonChild;
 
@@ -182,7 +184,8 @@ class _OverlayDateTimeContentState extends State<OverlayDateTimeContent> {
               ),
             ],
           ),
-        )
+        ),
+        if (widget.extraWidgetBuilder != null) widget.extraWidgetBuilder!,
       ],
     );
   }
diff --git a/pubspec.yaml b/pubspec.yaml
index addf7c5..b49fe14 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: flutter_date_time_picker
 description: A Flutter package for date and time picker.
-version: 4.0.0
+version: 4.0.1
 
 environment:
   sdk: ">=3.0.0 <4.0.0"