diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 734c56bff3b..73f36506c77 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -49,9 +49,9 @@
       <Uri>https://github.com/dotnet/runtime</Uri>
       <Sha>95863758cd16c345d0b8fca067d5db5d6901e498</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Wpf.DncEng" Version="6.0.0-rc.1.21374.2">
+    <Dependency Name="Microsoft.DotNet.Wpf.DncEng" Version="6.0.0-rc.1.21377.2">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-wpf-int</Uri>
-      <Sha>66b0e0cab63f51f92bc6133d9e3a15b8d46eee89</Sha>
+      <Sha>04aeabb5a9f2dce43747a5e49a107a645315cecf</Sha>
     </Dependency>
     <Dependency Name="System.IO.Packaging" Version="6.0.0-rc.1.21375.2" CoherentParentDependency="Microsoft.Private.Winforms">
       <Uri>https://github.com/dotnet/runtime</Uri>
diff --git a/eng/Versions.props b/eng/Versions.props
index 51100378e9e..c92fd4b593c 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -80,6 +80,6 @@
     <SystemReflectionMetadataLoadContextPackage>System.Reflection.MetadataLoadContext</SystemReflectionMetadataLoadContextPackage>
   </PropertyGroup>
   <PropertyGroup>
-    <MicrosoftDotNetWpfDncEngVersion>6.0.0-rc.1.21374.2</MicrosoftDotNetWpfDncEngVersion>
+    <MicrosoftDotNetWpfDncEngVersion>6.0.0-rc.1.21377.2</MicrosoftDotNetWpfDncEngVersion>
   </PropertyGroup>
 </Project>