diff --git a/pubspec.yaml b/pubspec.yaml
index cc95b9ea7..7d6ffa841 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -18,7 +18,7 @@ issue_tracker: https://github.com/sensuikan1973/pedax/issues
 # 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: 0.3.0-alpha.1+1
+version: 0.4.0-beta+1
 
 environment: # See: https://dart.dev/tools/pub/pubspec#sdk-constraints
   sdk: '>=2.12.0 <3.0.0'