diff --git a/CHANGELOG.md b/CHANGELOG.md
index f43b3df..5883506 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+## 1.2.1
+* Fix a problem that `device type` shows empty value for iOS devices.
+
 ## 1.2.0
 * Can track advertising Id now.
 * Will use a random UUID for device Id if ads tracking is disabled on the phone.
diff --git a/lib/src/constants.dart b/lib/src/constants.dart
index cf35bcd..6e66ac0 100644
--- a/lib/src/constants.dart
+++ b/lib/src/constants.dart
@@ -1,6 +1,6 @@
 class Constants {
   static const packageName = 'amplitude-flutter';
-  static const packageVersion = '1.2.0';
+  static const packageVersion = '1.2.1';
 
   // Local storage
   static const kLocalStoreDeviceIdKey = 'amp:device_id';
diff --git a/pubspec.yaml b/pubspec.yaml
index 6e8eac9..54655a2 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: amplitude_flutter
 description: Official Flutter plugin for tracking events and revenue to Amplitude.
-version: 1.2.0
+version: 1.2.1
 homepage: https://github.com/amplitude/Amplitude-Flutter
 
 environment:
@@ -12,7 +12,7 @@ dependencies:
   crypto: "^2.0.6"
   device_info: "^0.4.1+4"
   http: "^0.12.0+2"
-  package_info: "^0.4.0+13"
+  package_info: ">=0.4.0+13 <2.0.0"
   path: "^1.6.4"
   shared_preferences: "^0.5.6+2"
   sqflite: "^1.1.5"