diff --git a/.github/workflows/aws-lambda-java-tests.yml b/.github/workflows/aws-lambda-java-tests.yml
index 720c52c1..363647cc 100644
--- a/.github/workflows/aws-lambda-java-tests.yml
+++ b/.github/workflows/aws-lambda-java-tests.yml
@@ -4,14 +4,21 @@
 name: Java CI aws-lambda-java-tests
 
 on:
+  workflow_dispatch:
   push:
     branches: [ main ]
     paths:
       - 'aws-lambda-java-tests/**'
+      - 'aws-lambda-java-runtime-interface-client/**'
+      - 'aws-lambda-java-serialization/**'
+      - 'aws-lambda-java-events/**'
   pull_request:
     branches: [ '*' ]
     paths:
       - 'aws-lambda-java-tests/**'
+      - 'aws-lambda-java-runtime-interface-client/**'
+      - 'aws-lambda-java-serialization/**'
+      - 'aws-lambda-java-events/**'
       - '.github/workflows/aws-lambda-java-tests.yml'
 
 permissions:
diff --git a/README.md b/README.md
index e00d99a6..580e14e4 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>2.10.0</version>
+ <version>2.10.1</version>
 </dependency>
 ```
 
diff --git a/aws-lambda-java-runtime-interface-client/README.md b/aws-lambda-java-runtime-interface-client/README.md
index ad159c19..c448e7a8 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>2.10.0</version>
+      <version>2.10.1</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>2.10.0</version>
+    <version>2.10.1</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 76612e68..94a8a805 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 19, 2026
+`2.10.1`
+- Revert aws-lambda-java-serialization dependency to 1.2.0
+
 ### March 12, 2026
 `2.10.0`
 - Update aws-lambda-java-serialization dependency to 1.3.0
diff --git a/aws-lambda-java-runtime-interface-client/pom.xml b/aws-lambda-java-runtime-interface-client/pom.xml
index be59e61c..65304c61 100644
--- a/aws-lambda-java-runtime-interface-client/pom.xml
+++ b/aws-lambda-java-runtime-interface-client/pom.xml
@@ -4,7 +4,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.amazonaws</groupId>
     <artifactId>aws-lambda-java-runtime-interface-client</artifactId>
-    <version>2.10.0</version>
+    <version>2.10.1</version>
     <packaging>jar</packaging>
 
     <name>AWS Lambda Java Runtime Interface Client</name>
@@ -66,7 +66,7 @@
         <dependency>
             <groupId>com.amazonaws</groupId>
             <artifactId>aws-lambda-java-serialization</artifactId>
-            <version>1.3.0</version>
+            <version>1.2.0</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 862e861d..64893528 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>2.10.0</version>
+            <version>2.10.1</version>
         </dependency>
     </dependencies>
 
diff --git a/aws-lambda-java-serialization/mise.toml b/aws-lambda-java-serialization/mise.toml
new file mode 100644
index 00000000..854b93b5
--- /dev/null
+++ b/aws-lambda-java-serialization/mise.toml
@@ -0,0 +1,2 @@
+[tools]
+java = "corretto-8"
diff --git a/aws-lambda-java-tests/pom.xml b/aws-lambda-java-tests/pom.xml
index 5c509148..11f3da00 100644
--- a/aws-lambda-java-tests/pom.xml
+++ b/aws-lambda-java-tests/pom.xml
@@ -1,3 +1,4 @@
+<!-- Trigger CI: validate serialization 1.2.0 revert -->
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
@@ -40,7 +41,7 @@
         <dependency>
             <groupId>com.amazonaws</groupId>
             <artifactId>aws-lambda-java-serialization</artifactId>
-            <version>1.3.0</version>
+            <version>1.2.0</version>
         </dependency>
         <dependency>
             <groupId>com.amazonaws</groupId>