diff --git a/eng/Version.Details.props b/eng/Version.Details.props
index ae71fb6f2d02..9fbf61846054 100644
--- a/eng/Version.Details.props
+++ b/eng/Version.Details.props
@@ -144,8 +144,8 @@ This file should be imported by eng/Versions.props
     <!-- dotnet/core-setup dependencies -->
     <NETStandardLibraryRefPackageVersion>2.1.0</NETStandardLibraryRefPackageVersion>
     <!-- microsoft/testfx dependencies -->
-    <MicrosoftTestingPlatformPackageVersion>2.2.0-preview.26118.4</MicrosoftTestingPlatformPackageVersion>
-    <MSTestPackageVersion>4.2.0-preview.26118.4</MSTestPackageVersion>
+    <MicrosoftTestingPlatformPackageVersion>2.2.0-preview.26121.1</MicrosoftTestingPlatformPackageVersion>
+    <MSTestPackageVersion>4.2.0-preview.26121.1</MSTestPackageVersion>
   </PropertyGroup>
   <!--Property group for alternate package version names-->
   <PropertyGroup>
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index c0f2cfac83ee..492658ac33c0 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -564,13 +564,13 @@
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-dotnet</Uri>
       <Sha>44525024595742ebe09023abe709df51de65009b</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Testing.Platform" Version="2.2.0-preview.26118.4">
+    <Dependency Name="Microsoft.Testing.Platform" Version="2.2.0-preview.26121.1">
       <Uri>https://github.com/microsoft/testfx</Uri>
-      <Sha>9208585003599ef9cc5d59f1ed9f7a95ea157c97</Sha>
+      <Sha>abbd85a373b4bdbd82cc879b4ac67f451b8d3484</Sha>
     </Dependency>
-    <Dependency Name="MSTest" Version="4.2.0-preview.26118.4">
+    <Dependency Name="MSTest" Version="4.2.0-preview.26121.1">
       <Uri>https://github.com/microsoft/testfx</Uri>
-      <Sha>9208585003599ef9cc5d59f1ed9f7a95ea157c97</Sha>
+      <Sha>abbd85a373b4bdbd82cc879b4ac67f451b8d3484</Sha>
     </Dependency>
     <Dependency Name="Microsoft.Extensions.Configuration.Ini" Version="10.0.2">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-dotnet</Uri>