diff --git a/NuGet.config b/NuGet.config
index 086ee6ef505994..81b90642070f87 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -9,7 +9,7 @@
     <clear />
     <!--Begin: Package sources managed by Dependency Flow automation. Do not edit the sources below.-->
     <!--  Begin: Package sources from dotnet-emsdk -->
-    <add key="darc-pub-dotnet-emsdk-ee0a97a" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-emsdk-ee0a97a0/nuget/v3/index.json" />
+    <add key="darc-pub-dotnet-emsdk-572aeed" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-emsdk-572aeedc/nuget/v3/index.json" />
     <!--  End: Package sources from dotnet-emsdk -->
     <!--  Begin: Package sources from dotnet-wcf -->
     <!--  End: Package sources from dotnet-wcf -->
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index e74a2c20faf223..1a14aae8058fb3 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -8,17 +8,17 @@
       <Uri>https://github.com/dotnet/msquic</Uri>
       <Sha>98129287d56a5e0348c291ce4260e630b4aa510d</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NET.Workload.Emscripten.Manifest-6.0.100" Version="6.0.2">
+    <Dependency Name="Microsoft.NET.Workload.Emscripten.Manifest-6.0.100" Version="6.0.4">
       <Uri>https://github.com/dotnet/emsdk</Uri>
-      <Sha>ee0a97a0009c0e048789126253fea7994db676ac</Sha>
+      <Sha>572aeedcfa16bdb619fafcecf5924e5c6b65b07b</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NET.Workload.Emscripten.Manifest-6.0.200" Version="6.0.2">
+    <Dependency Name="Microsoft.NET.Workload.Emscripten.Manifest-6.0.200" Version="6.0.4">
       <Uri>https://github.com/dotnet/emsdk</Uri>
-      <Sha>ee0a97a0009c0e048789126253fea7994db676ac</Sha>
+      <Sha>572aeedcfa16bdb619fafcecf5924e5c6b65b07b</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NET.Workload.Emscripten.Manifest-6.0.300" Version="6.0.2">
+    <Dependency Name="Microsoft.NET.Workload.Emscripten.Manifest-6.0.300" Version="6.0.4">
       <Uri>https://github.com/dotnet/emsdk</Uri>
-      <Sha>ee0a97a0009c0e048789126253fea7994db676ac</Sha>
+      <Sha>572aeedcfa16bdb619fafcecf5924e5c6b65b07b</Sha>
     </Dependency>
     <Dependency Name="System.ServiceModel.Primitives" Version="4.9.0">
       <Uri>https://github.com/dotnet/wcf</Uri>
diff --git a/eng/Versions.props b/eng/Versions.props
index daf623959193ff..3e25ec550040ff 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -6,7 +6,7 @@
     <MajorVersion>6</MajorVersion>
     <MinorVersion>0</MinorVersion>
     <PatchVersion>4</PatchVersion>
-    <SdkBandVersion>6.0.200</SdkBandVersion>
+    <SdkBandVersion>6.0.300</SdkBandVersion>
     <PreReleaseVersionLabel>servicing</PreReleaseVersionLabel>
     <PreReleaseVersionIteration>
     </PreReleaseVersionIteration>
@@ -25,7 +25,7 @@
   </PropertyGroup>
   <ItemGroup>
     <!-- The bands we want to produce workload manifests for -->
-    <WorkloadSdkBandVersions Include="6.0.100;6.0.200" />
+    <WorkloadSdkBandVersions Include="6.0.100;6.0.200;6.0.300" />
   </ItemGroup>
   <PropertyGroup>
     <!-- For source generator support we need to target multiple versions of Rolsyn in order to be able to run on older versions of Roslyn -->
@@ -149,7 +149,7 @@
     <SQLitePCLRawbundle_greenVersion>2.0.4</SQLitePCLRawbundle_greenVersion>
     <MoqVersion>4.12.0</MoqVersion>
     <FsCheckVersion>2.14.3</FsCheckVersion>
-    <SdkVersionForWorkloadTesting>6.0.200-preview.22055.18</SdkVersionForWorkloadTesting>
+    <SdkVersionForWorkloadTesting>6.0.300-preview.22159.1</SdkVersionForWorkloadTesting>
     <!-- Docs -->
     <MicrosoftPrivateIntellisenseVersion>6.0.0-preview-20211019.1</MicrosoftPrivateIntellisenseVersion>
     <!-- ILLink -->
@@ -169,9 +169,9 @@
     <runtimeosx1012x64MicrosoftNETCoreRuntimeMonoLLVMSdkVersion>11.1.0-alpha.1.21416.1</runtimeosx1012x64MicrosoftNETCoreRuntimeMonoLLVMSdkVersion>
     <runtimeosx1012x64MicrosoftNETCoreRuntimeMonoLLVMToolsVersion>11.1.0-alpha.1.21416.1</runtimeosx1012x64MicrosoftNETCoreRuntimeMonoLLVMToolsVersion>
     <!-- emscripten / Node -->
-    <MicrosoftNETWorkloadEmscriptenManifest60100Version>6.0.2</MicrosoftNETWorkloadEmscriptenManifest60100Version>
-    <MicrosoftNETWorkloadEmscriptenManifest60200Version>6.0.2</MicrosoftNETWorkloadEmscriptenManifest60200Version>
-    <MicrosoftNETWorkloadEmscriptenManifest60300Version>6.0.2</MicrosoftNETWorkloadEmscriptenManifest60300Version>
+    <MicrosoftNETWorkloadEmscriptenManifest60100Version>6.0.4</MicrosoftNETWorkloadEmscriptenManifest60100Version>
+    <MicrosoftNETWorkloadEmscriptenManifest60200Version>6.0.4</MicrosoftNETWorkloadEmscriptenManifest60200Version>
+    <MicrosoftNETWorkloadEmscriptenManifest60300Version>6.0.4</MicrosoftNETWorkloadEmscriptenManifest60300Version>
     <MicrosoftNETRuntimeEmscriptenVersion>$(MicrosoftNETWorkloadEmscriptenManifest60100Version)</MicrosoftNETRuntimeEmscriptenVersion>
     <!-- workloads -->
     <SwixPackageVersion>1.1.87-gba258badda</SwixPackageVersion>
diff --git a/src/libraries/workloads-testing.targets b/src/libraries/workloads-testing.targets
index 3c0f162783bced..1534b53dece3f1 100644
--- a/src/libraries/workloads-testing.targets
+++ b/src/libraries/workloads-testing.targets
@@ -46,6 +46,7 @@
                   Condition="!Exists($(_DotNetInstallScriptPath))"/>
 
     <Exec Condition="!$([MSBuild]::IsOSPlatform('windows'))"
+          IgnoreStandardErrorWarningFormat="true"
           Command="chmod +x $(_DotNetInstallScriptPath); $(_DotNetInstallScriptPath) -i $(SdkWithNoWorkloadForTestingPath) -v $(SdkVersionForWorkloadTesting)" />
 
     <Exec Condition="$([MSBuild]::IsOSPlatform('windows'))"