diff --git a/.autover/changes/7d00dacc-cece-4fcf-903b-f84b894eaf9e.json b/.autover/changes/7d00dacc-cece-4fcf-903b-f84b894eaf9e.json
deleted file mode 100644
index 2dae4e61f..000000000
--- a/.autover/changes/7d00dacc-cece-4fcf-903b-f84b894eaf9e.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "Projects": [
-    {
-      "Name": "Amazon.Lambda.Annotations",
-      "Type": "Patch",
-      "ChangelogMessages": [
-        "treat warnings as errors and fix unshipped.md"
-      ]
-    }
-  ]
-}
\ No newline at end of file
diff --git a/.autover/changes/add-s3event-annotation.json b/.autover/changes/add-s3event-annotation.json
deleted file mode 100644
index 90bdc8edf..000000000
--- a/.autover/changes/add-s3event-annotation.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "Projects": [
-    {
-      "Name": "Amazon.Lambda.Annotations",
-      "Type": "Minor",
-      "ChangelogMessages": [
-        "Added [S3Event] annotation attribute for declaratively configuring S3 event-triggered Lambda functions with support for bucket reference, event types, key prefix/suffix filters, and enabled state."
-      ]
-    }
-  ]
-}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index fb2605741..b541fbd38 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## Release 2026-04-13 #2
+
+### Amazon.Lambda.Annotations (1.12.0)
+* treat warnings as errors and fix unshipped.md
+* Added [S3Event] annotation attribute for declaratively configuring S3 event-triggered Lambda functions with support for bucket reference, event types, key prefix/suffix filters, and enabled state.
+
 ## Release 2026-04-08
 
 ### Amazon.Lambda.Annotations (1.11.0)
diff --git a/Libraries/src/Amazon.Lambda.Annotations.SourceGenerator/Amazon.Lambda.Annotations.SourceGenerator.csproj b/Libraries/src/Amazon.Lambda.Annotations.SourceGenerator/Amazon.Lambda.Annotations.SourceGenerator.csproj
index 8a2852870..0e90d254a 100644
--- a/Libraries/src/Amazon.Lambda.Annotations.SourceGenerator/Amazon.Lambda.Annotations.SourceGenerator.csproj
+++ b/Libraries/src/Amazon.Lambda.Annotations.SourceGenerator/Amazon.Lambda.Annotations.SourceGenerator.csproj
@@ -20,7 +20,7 @@
     <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
     <IncludeBuildOutput>false</IncludeBuildOutput>
     
-    <Version>1.11.0</Version>
+    <Version>1.12.0</Version>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
   
diff --git a/Libraries/src/Amazon.Lambda.Annotations/Amazon.Lambda.Annotations.csproj b/Libraries/src/Amazon.Lambda.Annotations/Amazon.Lambda.Annotations.csproj
index 7a94d47c5..1fcc58ea6 100644
--- a/Libraries/src/Amazon.Lambda.Annotations/Amazon.Lambda.Annotations.csproj
+++ b/Libraries/src/Amazon.Lambda.Annotations/Amazon.Lambda.Annotations.csproj
@@ -11,7 +11,7 @@
     <AssemblyOriginatorKeyFile>..\..\..\buildtools\public.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
     
-    <Version>1.11.0</Version>
+    <Version>1.12.0</Version>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
diff --git a/Libraries/test/TestCustomAuthorizerApp/serverless.template b/Libraries/test/TestCustomAuthorizerApp/serverless.template
index 7aad04bcd..a9bd4fc47 100644
--- a/Libraries/test/TestCustomAuthorizerApp/serverless.template
+++ b/Libraries/test/TestCustomAuthorizerApp/serverless.template
@@ -1,7 +1,7 @@
 {
   "AWSTemplateFormatVersion": "2010-09-09",
   "Transform": "AWS::Serverless-2016-10-31",
-  "Description": "This template is partially managed by Amazon.Lambda.Annotations (v1.11.0.0).",
+  "Description": "This template is partially managed by Amazon.Lambda.Annotations (v1.12.0.0).",
   "Resources": {
     "AnnotationsHttpApi": {
       "Type": "AWS::Serverless::HttpApi",
diff --git a/Libraries/test/TestExecutableServerlessApp/serverless.template b/Libraries/test/TestExecutableServerlessApp/serverless.template
index 93ebd4920..65ce726fb 100644
--- a/Libraries/test/TestExecutableServerlessApp/serverless.template
+++ b/Libraries/test/TestExecutableServerlessApp/serverless.template
@@ -1,7 +1,7 @@
 {
   "AWSTemplateFormatVersion": "2010-09-09",
   "Transform": "AWS::Serverless-2016-10-31",
-  "Description": "An AWS Serverless Application. This template is partially managed by Amazon.Lambda.Annotations (v1.11.0.0).",
+  "Description": "An AWS Serverless Application. This template is partially managed by Amazon.Lambda.Annotations (v1.12.0.0).",
   "Parameters": {
     "ArchitectureTypeParameter": {
       "Type": "String",
diff --git a/Libraries/test/TestServerlessApp.ALB/serverless.template b/Libraries/test/TestServerlessApp.ALB/serverless.template
index 62c1fa590..71b1349ae 100644
--- a/Libraries/test/TestServerlessApp.ALB/serverless.template
+++ b/Libraries/test/TestServerlessApp.ALB/serverless.template
@@ -1,7 +1,7 @@
 {
   "AWSTemplateFormatVersion": "2010-09-09",
   "Transform": "AWS::Serverless-2016-10-31",
-  "Description": "ALB Integration Test Stack - VPC and ALB infrastructure for testing Lambda ALB annotations This template is partially managed by Amazon.Lambda.Annotations (v1.11.0.0).",
+  "Description": "ALB Integration Test Stack - VPC and ALB infrastructure for testing Lambda ALB annotations This template is partially managed by Amazon.Lambda.Annotations (v1.12.0.0).",
   "Resources": {
     "ALBTestVPC": {
       "Type": "AWS::EC2::VPC",
diff --git a/Libraries/test/TestServerlessApp.NET8/serverless.template b/Libraries/test/TestServerlessApp.NET8/serverless.template
index 8e1cc1793..b8c707f54 100644
--- a/Libraries/test/TestServerlessApp.NET8/serverless.template
+++ b/Libraries/test/TestServerlessApp.NET8/serverless.template
@@ -1,7 +1,7 @@
 {
   "AWSTemplateFormatVersion": "2010-09-09",
   "Transform": "AWS::Serverless-2016-10-31",
-  "Description": "This template is partially managed by Amazon.Lambda.Annotations (v1.11.0.0).",
+  "Description": "This template is partially managed by Amazon.Lambda.Annotations (v1.12.0.0).",
   "Resources": {
     "TestServerlessAppNET8FunctionsToUpperGenerated": {
       "Type": "AWS::Serverless::Function",
diff --git a/Libraries/test/TestServerlessApp/serverless.template b/Libraries/test/TestServerlessApp/serverless.template
index d5b4b3cb0..82ed9f7d4 100644
--- a/Libraries/test/TestServerlessApp/serverless.template
+++ b/Libraries/test/TestServerlessApp/serverless.template
@@ -1,7 +1,7 @@
 {
   "AWSTemplateFormatVersion": "2010-09-09",
   "Transform": "AWS::Serverless-2016-10-31",
-  "Description": "This template is partially managed by Amazon.Lambda.Annotations (v1.11.0.0).",
+  "Description": "This template is partially managed by Amazon.Lambda.Annotations (v1.12.0.0).",
   "Resources": {
     "TestQueue": {
       "Type": "AWS::SQS::Queue"