diff --git a/CHANGELOG.md b/CHANGELOG.md
index 14791a74..4c649f12 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 ## CHANGELOG
 
+### 5.5.0 (2023-10-16)
+**SDK**
+- **Fix:** Fix character escaping issue in Universal bridge (`sendJsonToMiniApp`)
+---
+
 ### 5.4.0 (2023-08-28)
 **SDK**
 - **Feature:** Added a new interface `downloadMiniApp(appId:versionId:completionHandler:)` to download Miniapp from platform in background if needed.
diff --git a/MiniApp.podspec b/MiniApp.podspec
index 5d11ebb5..590dd60a 100644
--- a/MiniApp.podspec
+++ b/MiniApp.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |miniapp|
   miniapp.name         = 'MiniApp'
-  miniapp.version      = '5.4.0'
+  miniapp.version      = '5.5.0'
   miniapp.authors      = "Rakuten Ecosystem Mobile"
   miniapp.summary      = "Rakuten's Mini App SDK"
   miniapp.description  = "This open-source library allows you to integrate Mini App ecosystem into your iOS applications. Mini App SDK also facilitates communication between a mini app and the host app via a message bridge."
diff --git a/Sources/Classes/core/MiniApp.swift b/Sources/Classes/core/MiniApp.swift
index fe43d4da..71afb0aa 100644
--- a/Sources/Classes/core/MiniApp.swift
+++ b/Sources/Classes/core/MiniApp.swift
@@ -3,7 +3,7 @@ import UIKit
 
 /// Mini App Public API methods
 public class MiniApp: NSObject {
-    public static let version = "5.4.0"
+    public static let version = "5.5.0"
     private static let shared = MiniApp()
     private let realMiniApp = RealMiniApp()
     public static var MAOrientationLock: UIInterfaceOrientationMask = []
diff --git a/Tests/Unit/MiniAppScriptMessageHandlerTests.swift b/Tests/Unit/MiniAppScriptMessageHandlerTests.swift
index a731f727..1b8e3135 100644
--- a/Tests/Unit/MiniAppScriptMessageHandlerTests.swift
+++ b/Tests/Unit/MiniAppScriptMessageHandlerTests.swift
@@ -1106,7 +1106,7 @@ class MiniAppScriptMessageHandlerTests: QuickSpec {
                         return
                     }
                     let environmentInfo = ResponseDecoder.decode(decodeType: MAHostEnvironmentInfo.self, data: responseData)
-                        expect(environmentInfo?.sdkVersion).toEventually(equal("5.4.0"))
+                        expect(environmentInfo?.sdkVersion).toEventually(equal("5.5.0"))
                     expect(environmentInfo?.hostVersion).toEventually(equal(Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String))
                     expect(environmentInfo?.hostLocale).toEventually(equal("en-US"))
                 }
diff --git a/USERGUIDE.md b/USERGUIDE.md
index aad7c38b..09ce5b98 100644
--- a/USERGUIDE.md
+++ b/USERGUIDE.md
@@ -83,7 +83,7 @@ To integrate MiniApp SDK into your Xcode project using Swift Package Manager, ad
 
 ```ruby
 dependencies: [
-    .package(url: "https://github.com/rakutentech/ios-miniapp.git", .upToNextMajor(from: "5.4.0"))
+    .package(url: "https://github.com/rakutentech/ios-miniapp.git", .upToNextMajor(from: "5.5.0"))
 ]
 ```