diff --git a/Changelog.md b/Changelog.md
index 9ef1063..37b253d 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,5 +1,11 @@
 # Change Log
 
+## 1.2.7 (Sep 23, 2024)
+* Fixed issues depending on LiveSDK / ChatSDK initialization timing
+  * ChannelDelegate in ChatSDK not working issue
+  * disconnection issues
+* Updated SendbirdChatSDK dependency's minimum version to 4.21.3
+
 ## 1.2.6 (Jun 17, 2024)
 * Updated SendbirdChatSDK dependency's minimum version.
 
diff --git a/Package.swift b/Package.swift
index 27cb444..d375838 100644
--- a/Package.swift
+++ b/Package.swift
@@ -11,13 +11,13 @@ let package = Package(
     ],
     dependencies: [
         .package(url: "https://github.com/sendbird/sendbird-webrtc-ios",  "1.8.1"..<"1.9.0"),
-        .package(url: "https://github.com/sendbird/sendbird-chat-sdk-ios", from: "4.11.0")
+        .package(url: "https://github.com/sendbird/sendbird-chat-sdk-ios", from: "4.21.3")
     ],
     targets: [
         .binaryTarget(
             name: "SendbirdLiveSDK",
-            url: "https://github.com/sendbird/sendbird-live-sdk-ios/releases/download/v1.2.6/SendbirdLiveSDK.xcframework.zip",
-            checksum: "0693252ba3b43a1da1017e33ed3edc29cd5ad1a1d49662993c6c1b21b942e329"
+            url: "https://github.com/sendbird/sendbird-live-sdk-ios/releases/download/v1.2.7/SendbirdLiveSDK.xcframework.zip",
+            checksum: "00e74d3abdf360696e39178f6a102fff23e31c588884f7c9496a35dadea1ef85"
         ),
         .target(name: "SendbirdLiveSDKTarget",
                 dependencies: [
diff --git a/SendbirdLiveSDK.podspec b/SendbirdLiveSDK.podspec
index 2335677..57db03f 100644
--- a/SendbirdLiveSDK.podspec
+++ b/SendbirdLiveSDK.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = 'SendbirdLiveSDK'
-  s.version      = "1.2.6"
+  s.version      = "1.2.7"
   s.summary      = 'Sendbird Live iOS Framework'
   s.description  = 'Sendbird Live API turns a client app into a live streaming platform where users can broadcast themselves in real-time to their followers.'
   s.homepage     = 'https://sendbird.com'
@@ -14,13 +14,13 @@ Pod::Spec.new do |s|
     'Celine Moon' => 'celine.moon@sendbird.com',
     'Young Hwang' => 'young.hwang@sendbird.com'
   }
-  s.source       = { :http => "https://github.com/sendbird/sendbird-live-sdk-ios/releases/download/v1.2.6/SendbirdLiveSDK.zip", :sha1 => "111c56fa400b03b72edce8a0bc2107163219d76a" }
+  s.source       = { :http => "https://github.com/sendbird/sendbird-live-sdk-ios/releases/download/v1.2.7/SendbirdLiveSDK.zip", :sha1 => "7674dba3b279b6a8fd85e76ee82281cf72059b1b" }
   s.requires_arc = true
   s.platform = :ios, '12.0'
   s.documentation_url = 'https://sendbird.com/docs/live/v1/ios/ref/index.html'
   s.ios.vendored_frameworks = 'SendbirdLiveSDK/SendbirdLiveSDK.xcframework'
   s.dependency "SendBirdWebRTC", "~> 1.8.1"
-  s.dependency "SendbirdChatSDK", "> 4.11.0"
+  s.dependency "SendbirdChatSDK", "> 4.21.3"
   s.ios.frameworks =  ["UIKit", "Foundation", "WebRTC", "AVKit", "MediaPlayer", "Network", "CoreTelephony", "VideoToolbox"]
   s.ios.library   = 'icucore'
 end