diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3f722dd..eb3cebd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -144,3 +144,7 @@
 1. Solar增加薪资比例；
 2. 修正与寿星v5.10的节气误差；
 3. 修复古时阴阳历转换错误的问题。
+
+## 1.3.5
+1. 中元节改为农历七月十五；
+2. 修复Solar的nextMonth超期问题。
diff --git a/lib/calendar/Solar.dart b/lib/calendar/Solar.dart
index 5f03aab..20d9530 100644
--- a/lib/calendar/Solar.dart
+++ b/lib/calendar/Solar.dart
@@ -404,19 +404,17 @@ class Solar {
     int y = _year + years;
     int m = _month;
     int d = _day;
-    // 2月处理
-    if (2 == m) {
+    if (1582 == y && 10 == m) {
+      if (d > 4 && d < 15) {
+        d += 10;
+      }
+    } else if (2 == m) {
       if (d > 28) {
         if (!SolarUtil.isLeapYear(y)) {
           d = 28;
         }
       }
     }
-    if (1582 == y && 10 == m) {
-      if (d > 4 && d < 15) {
-        d += 10;
-      }
-    }
     return Solar.fromYmdHms(y, m, d, _hour, _minute, _second);
   }
 
@@ -425,18 +423,15 @@ class Solar {
     int y = month.getYear();
     int m = month.getMonth();
     int d = _day;
-    // 2月处理
-    if (2 == m) {
-      if (d > 28) {
-        if (!SolarUtil.isLeapYear(y)) {
-          d = 28;
-        }
-      }
-    }
     if (1582 == y && 10 == m) {
       if (d > 4 && d < 15) {
         d += 10;
       }
+    }  else {
+      int maxDay = SolarUtil.getDaysOfMonth(y, m);
+      if (d > maxDay) {
+        d = maxDay;
+      }
     }
     return Solar.fromYmdHms(y, m, d, _hour, _minute, _second);
   }
diff --git a/lib/calendar/util/LunarUtil.dart b/lib/calendar/util/LunarUtil.dart
index 6bceb19..83e4494 100644
--- a/lib/calendar/util/LunarUtil.dart
+++ b/lib/calendar/util/LunarUtil.dart
@@ -1005,7 +1005,7 @@ class LunarUtil {
     '6-6': ['天贶节'],
     '6-24': ['观莲节'],
     '6-25': ['五谷母节'],
-    '7-14': ['中元节'],
+    '7-15': ['中元节'],
     '7-22': ['财神节'],
     '7-29': ['地藏节'],
     '8-1': ['天灸日'],
diff --git a/pubspec.yaml b/pubspec.yaml
index 81c0537..d5a6763 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: lunar
 description: a calendar library for Solar and Chinese Lunar
-version: 1.3.4
+version: 1.3.5
 homepage: https://github.com/6tail/lunar-flutter
 
 environment:
diff --git a/test/Solar_test.dart b/test/Solar_test.dart
index 99bee6c..f28fe00 100644
--- a/test/Solar_test.dart
+++ b/test/Solar_test.dart
@@ -136,4 +136,24 @@ void main() {
     expect(solar.next(-5).toYmd(), '1582-09-30');
   });
 
+  test('24', () {
+    Solar solar = Solar.fromYmd(2023, 8, 31);
+    expect(solar.nextMonth(1).toYmd(), '2023-09-30');
+  });
+
+  test('25', () {
+    Solar solar = Solar.fromYmd(2023, 8, 31);
+    expect(solar.nextMonth(2).toYmd(), '2023-10-31');
+  });
+
+  test('26', () {
+    Solar solar = Solar.fromYmd(2023, 8, 31);
+    expect(solar.nextMonth(6).toYmd(), '2024-02-29');
+  });
+
+  test('27', () {
+    Solar solar = Solar.fromYmd(2023, 8, 31);
+    expect(solar.nextYear(2).toYmd(), '2025-08-31');
+  });
+
 }