diff --git a/lib/pages/main/patchnote/patchnote_page.dart b/lib/pages/main/patchnote/patchnote_page.dart
index 389a68de..8287a6aa 100644
--- a/lib/pages/main/patchnote/patchnote_page.dart
+++ b/lib/pages/main/patchnote/patchnote_page.dart
@@ -21,6 +21,14 @@ class PatchModel {
 }
 
 final patches = [
+  PatchModel(
+    dateTime: DateTime(2024, 2, 9),
+    version: '1.31.1 Patch',
+    contents: [
+      'improve tablet ui',
+      'fix two page viewer',
+    ],
+  ),
   PatchModel(
     dateTime: DateTime(2024, 2, 3),
     version: '1.31 Minor',
diff --git a/lib/version/update_sync.dart b/lib/version/update_sync.dart
index d58d4252..055130d0 100644
--- a/lib/version/update_sync.dart
+++ b/lib/version/update_sync.dart
@@ -15,7 +15,7 @@ class UpdateSyncManager {
   // Current version
   static const int majorVersion = 1;
   static const int minorVersion = 31;
-  static const int patchVersion = 0;
+  static const int patchVersion = 1;
 
   static String get currentVersion =>
       '$majorVersion.$minorVersion.$patchVersion';
diff --git a/pubspec.yaml b/pubspec.yaml
index 801be322..1bafc504 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -11,7 +11,7 @@ description: Open Source Hentai Viewer App
 # In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
 # Read more about iOS versioning at
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
-version: 1.31.0+0
+version: 1.31.1+0
 
 publish_to: none