diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9937365..6daa5ab 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+## 2.3.1
+* Fixed a `type 'String' is not a subtype of type 'Cashtray' in type cast` error when calling `toJson` on the `TokenInfo` that `getTokenInfo` returns for a cashtray QR. `getTokenInfo` returns an empty token for a cashtray, because the user who scanned it cannot read the cashtray itself, and `fromJson`/`toJson` now pass that token through instead of casting it
+
 ## 2.3.0
 * Bumped the iOS `Pokepay` dependency to 2.3.0
 * **Raised the minimum iOS deployment target to 15.0.** Apps embedding this plugin must set `platform :ios, '15.0'` in their `ios/Podfile`, add a `post_install` hook raising `IPHONEOS_DEPLOYMENT_TARGET` for all pods, and match it on the `Runner` target -- see the iOS setup section in the README. The hook is required because `APIKit` declares iOS 9.0 and the `Flutter` pod declares 11.0, which Xcode 26 and later refuse to build
diff --git a/ios/pokepay_sdk.podspec b/ios/pokepay_sdk.podspec
index 63a18fa..a276253 100644
--- a/ios/pokepay_sdk.podspec
+++ b/ios/pokepay_sdk.podspec
@@ -4,7 +4,7 @@
 #
 Pod::Spec.new do |s|
   s.name             = 'pokepay_sdk'
-  s.version          = '2.3.0'
+  s.version          = '2.3.1'
   s.summary          = 'Pokepay flutter SDK'
   s.description      = <<-DESC
 Pokepay flutter SDK
diff --git a/pubspec.yaml b/pubspec.yaml
index 886b39f..aa7a2b4 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: pokepay_sdk
 description: SDK for pokepay
-version: 2.3.0
+version: 2.3.1
 homepage: https://pay.pocket-change.jp/
 
 environment: