diff --git a/packages/altfire_messenger/pubspec.yaml b/packages/altfire_messenger/pubspec.yaml
index 7cbf073..9c6a725 100644
--- a/packages/altfire_messenger/pubspec.yaml
+++ b/packages/altfire_messenger/pubspec.yaml
@@ -18,7 +18,7 @@ dependencies:
   flutter:
     sdk: flutter
   flutter_local_notifications: ^18.0.1
-  timezone: ^0.9.4
+  timezone: ^0.10.0
 
 dev_dependencies:
   altive_lints: ^1.16.0