diff --git a/scripts/build/TestPlatform.Dependencies.props b/scripts/build/TestPlatform.Dependencies.props
index 75c92eb451..8f7141b4b4 100644
--- a/scripts/build/TestPlatform.Dependencies.props
+++ b/scripts/build/TestPlatform.Dependencies.props
@@ -25,6 +25,6 @@
 
     <JsonNetVersion>9.0.1</JsonNetVersion>
     <MoqVersion>4.7.63</MoqVersion>
-    <TestPlatformExternalsVersion>15.6.0-preview-1251113</TestPlatformExternalsVersion>
+    <TestPlatformExternalsVersion>15.6.0-preview-1266193</TestPlatformExternalsVersion>
   </PropertyGroup>
 </Project>