diff --git a/README.md b/README.md
index b6c67b9e8..d0e9733fa 100644
--- a/README.md
+++ b/README.md
@@ -163,7 +163,7 @@ The purpose of this package is to allow developers to deploy their applications
 <dependency>
  <groupId>com.amazonaws</groupId>
  <artifactId>aws-lambda-java-runtime-interface-client</artifactId>
- <version>2.8.6</version>
+ <version>2.9.0</version>
 </dependency>
 ```
 
diff --git a/aws-lambda-java-runtime-interface-client/README.md b/aws-lambda-java-runtime-interface-client/README.md
index 4e03f041f..cc5858443 100644
--- a/aws-lambda-java-runtime-interface-client/README.md
+++ b/aws-lambda-java-runtime-interface-client/README.md
@@ -70,7 +70,7 @@ pom.xml
     <dependency>
       <groupId>com.amazonaws</groupId>
       <artifactId>aws-lambda-java-runtime-interface-client</artifactId>
-      <version>2.8.7</version>
+      <version>2.9.0</version>
     </dependency>
   </dependencies>
   <build>
@@ -203,7 +203,7 @@ platform-specific JAR by setting the `<classifier>`.
 <dependency>
     <groupId>com.amazonaws</groupId>
     <artifactId>aws-lambda-java-runtime-interface-client</artifactId>
-    <version>2.8.7</version>
+    <version>2.9.0</version>
     <classifier>linux-x86_64</classifier>
 </dependency>
 ```
diff --git a/aws-lambda-java-runtime-interface-client/RELEASE.CHANGELOG.md b/aws-lambda-java-runtime-interface-client/RELEASE.CHANGELOG.md
index 93d8cf23a..c8f7d226b 100644
--- a/aws-lambda-java-runtime-interface-client/RELEASE.CHANGELOG.md
+++ b/aws-lambda-java-runtime-interface-client/RELEASE.CHANGELOG.md
@@ -1,3 +1,7 @@
+### March 12, 2026
+`2.9.0`
+- Update aws-lambda-java-serialization dependency to 1.3.0
+
 ### September 22, 2025
 `2.8.7`
 - Remove Minimum and Maximum Limits of AWS_LAMBDA_MAX_CONCURRENCY.
diff --git a/aws-lambda-java-runtime-interface-client/pom.xml b/aws-lambda-java-runtime-interface-client/pom.xml
index ab7166c84..16fcd78cd 100644
--- a/aws-lambda-java-runtime-interface-client/pom.xml
+++ b/aws-lambda-java-runtime-interface-client/pom.xml
@@ -66,7 +66,7 @@
         <dependency>
             <groupId>com.amazonaws</groupId>
             <artifactId>aws-lambda-java-serialization</artifactId>
-            <version>1.2.0</version>
+            <version>1.3.0</version>
         </dependency>
         <dependency>
             <groupId>software.amazon.awssdk</groupId>
diff --git a/aws-lambda-java-runtime-interface-client/test/integration/test-handler/pom.xml b/aws-lambda-java-runtime-interface-client/test/integration/test-handler/pom.xml
index e854831e7..249277a8a 100644
--- a/aws-lambda-java-runtime-interface-client/test/integration/test-handler/pom.xml
+++ b/aws-lambda-java-runtime-interface-client/test/integration/test-handler/pom.xml
@@ -15,7 +15,7 @@
         <dependency>
             <groupId>com.amazonaws</groupId>
             <artifactId>aws-lambda-java-runtime-interface-client</artifactId>
-            <version>2.8.7</version>
+            <version>2.9.0</version>
         </dependency>
     </dependencies>
 
diff --git a/aws-lambda-java-tests/pom.xml b/aws-lambda-java-tests/pom.xml
index 314669968..5c509148a 100644
--- a/aws-lambda-java-tests/pom.xml
+++ b/aws-lambda-java-tests/pom.xml
@@ -40,7 +40,7 @@
         <dependency>
             <groupId>com.amazonaws</groupId>
             <artifactId>aws-lambda-java-serialization</artifactId>
-            <version>1.1.6</version>
+            <version>1.3.0</version>
         </dependency>
         <dependency>
             <groupId>com.amazonaws</groupId>