diff --git a/CHANGELOG.md b/CHANGELOG.md
index 897c953..d83f4b2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,12 @@
 # Changelog
 
-## v4.12.1 (Sep 13, 2023)
+## v4.12.2 (Sep 25, 2023)
+### Features
+- Added `GroupChannel.getDeliveryStatus(Boolean): Map<String, DeliveryStatus>` to get delivery status of all members.
+- Added `BaseMessage.submitForm(String, Map<String, String>, CompletionHandler?)`, which allows you to submit form messages sent by the bot. Please note that form messages are delivered via BaseMessage.extendedMessages when all settings are properly configured on the server.
+
+### Improvements
+- Fixed occasional `NoSuchElementException` when accessing `GroupChannel.members`.## v4.12.1 (Sep 13, 2023)
 ### Improvements
 
 - Improved stability.
diff --git a/README.md b/README.md
index 00d7265..b556d93 100644
--- a/README.md
+++ b/README.md
@@ -90,7 +90,7 @@ Then, add the dependency to the project's top-level `build.gradle` file:
 ```gradle
 dependencies {
     ...
-    implementation 'com.sendbird.sdk:sendbird-chat:4.12.1'
+    implementation 'com.sendbird.sdk:sendbird-chat:4.12.2'
     ...
 }
 ```
@@ -103,7 +103,7 @@ TLS 1.3 is enabled by default in Sendbird SDK for Android. To disable it, please
 
 ```gradle
 dependencies {
-    implementation ('com.sendbird.sdk:sendbird-chat:4.12.1') {
+    implementation ('com.sendbird.sdk:sendbird-chat:4.12.2') {
         exclude group: 'org.conscrypt', module: 'conscrypt-android'
     }
 }