diff --git a/lib/features/diary/presentation/pages/diary_screen.dart b/lib/features/diary/presentation/pages/diary_screen.dart
index 2abdac39..6649263e 100644
--- a/lib/features/diary/presentation/pages/diary_screen.dart
+++ b/lib/features/diary/presentation/pages/diary_screen.dart
@@ -79,12 +79,20 @@ class _DiaryScreenState extends State<DiaryScreen> {
   }
 
   _arrowDown() {
-    return Container(
-      padding: const EdgeInsets.only(top: 8, bottom: 16),
-      width: double.infinity,
-      child: Icon(
-        _calendarFormat == CalendarFormat.month ? Icons.keyboard_arrow_up_rounded : Icons.keyboard_arrow_down_rounded,
-        color: Colors.grey.shade600,
+    return GestureDetector(
+      behavior: HitTestBehavior.translucent,
+      onVerticalDragStart: (_) {
+        setState(() {
+          _calendarFormat = CalendarFormat.values[(_calendarFormat.index - 1) % CalendarFormat.values.length];
+        });
+      },
+      child: Container(
+        width: double.infinity,
+        padding: const EdgeInsets.only(top: 8, bottom: 16),
+        child: Icon(
+          _calendarFormat == CalendarFormat.month ? Icons.keyboard_arrow_up_rounded : Icons.keyboard_arrow_down_rounded,
+          color: Colors.grey.shade600,
+        ),
       ),
     );
   }