diff --git a/README.md b/README.md
index 94f842fb..cc560dcb 100644
--- a/README.md
+++ b/README.md
@@ -71,7 +71,7 @@ public class SqsHandler implements RequestHandler<SQSEvent, String> {
 <dependency>
  <groupId>com.amazonaws</groupId>
  <artifactId>aws-lambda-java-events</artifactId>
- <version>3.11.6</version>
+ <version>3.12.0</version>
 </dependency>
 ```
 
diff --git a/aws-lambda-java-events/README.md b/aws-lambda-java-events/README.md
index 92bea0ea..53377ecc 100644
--- a/aws-lambda-java-events/README.md
+++ b/aws-lambda-java-events/README.md
@@ -73,7 +73,7 @@
     <dependency>
         <groupId>com.amazonaws</groupId>
         <artifactId>aws-lambda-java-events</artifactId>
-        <version>3.11.6</version>
+        <version>3.12.0</version>
     </dependency>
     ...
 </dependencies>
diff --git a/aws-lambda-java-events/RELEASE.CHANGELOG.md b/aws-lambda-java-events/RELEASE.CHANGELOG.md
index a19bd260..bbb9505e 100644
--- a/aws-lambda-java-events/RELEASE.CHANGELOG.md
+++ b/aws-lambda-java-events/RELEASE.CHANGELOG.md
@@ -1,3 +1,8 @@
+### July 11, 2024
+`3.12.0`:
+- Added the object representations of the CloudWatch alarms([#493](https://github.com/aws/aws-lambda-java-libs/pull/493))
+- Added event class MskFirehoseEvent.java for Firehose Lambda transformation when MSK is the source([#490](https://github.com/aws/aws-lambda-java-libs/pull/490))
+
 ### June 11, 2024
 `3.11.6`:
 - Add the V2 version of the pre token generation event([#465](https://github.com/aws/aws-lambda-java-libs/pull/465))
diff --git a/aws-lambda-java-events/pom.xml b/aws-lambda-java-events/pom.xml
index 4abea0f8..909b3997 100644
--- a/aws-lambda-java-events/pom.xml
+++ b/aws-lambda-java-events/pom.xml
@@ -5,7 +5,7 @@
 
     <groupId>com.amazonaws</groupId>
     <artifactId>aws-lambda-java-events</artifactId>
-    <version>3.11.6</version>
+    <version>3.12.0</version>
     <packaging>jar</packaging>
 
     <name>AWS Lambda Java Events Library</name>
diff --git a/aws-lambda-java-tests/pom.xml b/aws-lambda-java-tests/pom.xml
index b77032b7..2ecbd7a9 100644
--- a/aws-lambda-java-tests/pom.xml
+++ b/aws-lambda-java-tests/pom.xml
@@ -45,7 +45,7 @@
         <dependency>
             <groupId>com.amazonaws</groupId>
             <artifactId>aws-lambda-java-events</artifactId>
-            <version>3.11.6</version>
+            <version>3.12.0</version>
         </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
diff --git a/samples/kinesis-firehose-event-handler/pom.xml b/samples/kinesis-firehose-event-handler/pom.xml
index 1dc96d3d..145337f5 100644
--- a/samples/kinesis-firehose-event-handler/pom.xml
+++ b/samples/kinesis-firehose-event-handler/pom.xml
@@ -46,7 +46,7 @@
         <dependency>
             <groupId>com.amazonaws</groupId>
             <artifactId>aws-lambda-java-events</artifactId>
-            <version>3.11.6</version>
+            <version>3.12.0</version>
         </dependency>
 
         <dependency>