diff --git a/CHANGELOG.md b/CHANGELOG.md
index 402cdb0..48083c0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,14 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 - None.
 
+## [2.2.1 (2023-01-03)]
+
+- Revert wrong modified for thread.
+
+## [2.2.0 (2022-12-23)]
+
+- Change `bridges` access modifier to open.
+
 ## [2.1.0 (2021-08-28)]
 
 - Deprecation cocoapods support.
@@ -126,7 +134,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 - First release.
 
-[Unreleased]: https://github.com/ridi/WKJavaScriptController/compare/2.1.0...HEAD
+[Unreleased]: https://github.com/ridi/WKJavaScriptController/compare/2.2.1...HEAD
+[2.2.1 (2023-01-03)]: https://github.com/ridi/WKJavaScriptController/compare/2.2.0...2.2.1
+[2.2.0 (2022-12-23)]: https://github.com/ridi/WKJavaScriptController/compare/2.1.0...2.2.0
 [2.1.0 (2021-08-28)]: https://github.com/ridi/WKJavaScriptController/compare/2.0.2...2.1.0
 [2.0.2 (2020-02-06)]: https://github.com/ridi/WKJavaScriptController/compare/2.0.1...2.0.2
 [2.0.1 (2019-03-06)]: https://github.com/ridi/WKJavaScriptController/compare/2.0.0...2.0.1
diff --git a/Sources/WKJavaScriptController/WKJavaScriptController.swift b/Sources/WKJavaScriptController/WKJavaScriptController.swift
index 271c372..2e7a093 100644
--- a/Sources/WKJavaScriptController/WKJavaScriptController.swift
+++ b/Sources/WKJavaScriptController/WKJavaScriptController.swift
@@ -103,16 +103,16 @@ open class WKJavaScriptController: NSObject {
 
     fileprivate weak var webView: WKWebView?
 
-    fileprivate var bridges = [MethodBridge]()
+    open private(set) var bridges = [MethodBridge]()
 
     fileprivate var isInjectRequired = true
 
-    fileprivate class MethodBridge {
-        var nativeSelector: Selector
-        var isExtendJsSelector: Bool // If true, use ObjC style naming.
-        var isReturnRequired: Bool
+    open class MethodBridge {
+        open private(set) var nativeSelector: Selector
+        open fileprivate(set) var isExtendJsSelector: Bool // If true, use ObjC style naming.
+        open fileprivate(set) var isReturnRequired: Bool
 
-        var jsSelector: String {
+        open var jsSelector: String {
             let selector = NSStringFromSelector(nativeSelector)
             let components = selector.components(separatedBy: ":")
             if components.isEmpty {
@@ -136,7 +136,7 @@ open class WKJavaScriptController: NSObject {
             }
         }
 
-        var argumentCount: Int {
+        open var argumentCount: Int {
             max(NSStringFromSelector(nativeSelector).components(separatedBy: ":").count - 1, 0)
         }