diff --git a/SDK.CHANGELOG.md b/SDK.CHANGELOG.md
index 1719fc7afe05..fe27892d9576 100644
--- a/SDK.CHANGELOG.md
+++ b/SDK.CHANGELOG.md
@@ -1,3 +1,7 @@
+### 3.3.126.0 (2017-07-20 22:09 UTC)
+* ElasticMapReduce (3.3.4.0)
+	* Amazon EMR now includes the ability to use a custom Amazon Linux AMI and adjustable root volume size when launching a cluster.
+
 ### 3.3.125.0 (2017-07-19 17:49 UTC)
 * Budgets (3.3.2.0)
 	* Update budget Management API's to list/create/update RI_UTILIZATION type budget. Update budget Management API's to support DAILY timeUnit for RI_UTILIZATION type budget.
diff --git a/generator/ServiceModels/_sdk-versions.json b/generator/ServiceModels/_sdk-versions.json
index 1c59f9b7488f..644aa8da4bf6 100644
--- a/generator/ServiceModels/_sdk-versions.json
+++ b/generator/ServiceModels/_sdk-versions.json
@@ -1,6 +1,6 @@
 
 {
-    "ProductVersion" : "3.3.125.0",
+    "ProductVersion" : "3.3.126.0",
     "CoreVersion"    : "3.3.17.2",
     "DefaultToPreview" : false,
     "ServiceVersions"  : {
@@ -191,7 +191,7 @@
             "InPreview"               : false
         },
         "ElasticMapReduce"     : {
-            "Version" : "3.3.3.13",
+            "Version" : "3.3.4.0",
             "AssemblyVersionOverride" : null,
             "Dependencies"            : {
                 "Core" : "3.3.17.0"
diff --git a/sdk/code-analysis/ServiceAnalysis/ElasticMapReduce/Properties/AssemblyInfo.cs b/sdk/code-analysis/ServiceAnalysis/ElasticMapReduce/Properties/AssemblyInfo.cs
index 3fbb45b9c957..6e5964c8939e 100644
--- a/sdk/code-analysis/ServiceAnalysis/ElasticMapReduce/Properties/AssemblyInfo.cs
+++ b/sdk/code-analysis/ServiceAnalysis/ElasticMapReduce/Properties/AssemblyInfo.cs
@@ -29,4 +29,4 @@
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
 [assembly: AssemblyVersion("3.3")]
-[assembly: AssemblyFileVersion("3.3.3.13")]
\ No newline at end of file
+[assembly: AssemblyFileVersion("3.3.4.0")]
\ No newline at end of file
diff --git a/sdk/src/Services/ElasticMapReduce/Generated/AmazonElasticMapReduceConfig.cs b/sdk/src/Services/ElasticMapReduce/Generated/AmazonElasticMapReduceConfig.cs
index ff9e106e66ff..cf8a75c12874 100644
--- a/sdk/src/Services/ElasticMapReduce/Generated/AmazonElasticMapReduceConfig.cs
+++ b/sdk/src/Services/ElasticMapReduce/Generated/AmazonElasticMapReduceConfig.cs
@@ -32,7 +32,7 @@ namespace Amazon.ElasticMapReduce
     public partial class AmazonElasticMapReduceConfig : ClientConfig
     {
         private static readonly string UserAgentString =
-            InternalSDKUtils.BuildUserAgentString("3.3.3.13");
+            InternalSDKUtils.BuildUserAgentString("3.3.4.0");
 
         private string _userAgent = UserAgentString;
 
diff --git a/sdk/src/Services/ElasticMapReduce/Properties/AssemblyInfo.cs b/sdk/src/Services/ElasticMapReduce/Properties/AssemblyInfo.cs
index 46d428900947..d8c4398109ab 100644
--- a/sdk/src/Services/ElasticMapReduce/Properties/AssemblyInfo.cs
+++ b/sdk/src/Services/ElasticMapReduce/Properties/AssemblyInfo.cs
@@ -44,7 +44,7 @@
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
 [assembly: AssemblyVersion("3.3")]
-[assembly: AssemblyFileVersion("3.3.3.13")]
+[assembly: AssemblyFileVersion("3.3.4.0")]
 
 #if WINDOWS_PHONE || UNITY
 [assembly: System.CLSCompliant(false)]