diff --git a/tests/Directory.Build.props b/tests/Directory.Build.props
index d65e92b58..1e4d760cb 100644
--- a/tests/Directory.Build.props
+++ b/tests/Directory.Build.props
@@ -4,5 +4,8 @@
   <PropertyGroup>
     <!-- Default TFM's we build for -->
     <_DefaultNetTargetFramework>net9.0</_DefaultNetTargetFramework>
+    <!-- Allow tests to run on newer runtimes (e.g. .NET 10) when the targeted
+         runtime isn't installed on the build agent. -->
+    <RollForward>Major</RollForward>
   </PropertyGroup>
 </Project>
diff --git a/util/Directory.Build.props b/util/Directory.Build.props
index 3d7677b28..3c18d566d 100644
--- a/util/Directory.Build.props
+++ b/util/Directory.Build.props
@@ -3,6 +3,9 @@
   which is tuned for building bindings packages. -->
   <PropertyGroup>
     <_DefaultNetTargetFramework>net9.0</_DefaultNetTargetFramework>
+    <!-- Allow tests/tools to run on newer runtimes (e.g. .NET 10) when the
+         targeted runtime isn't installed on the build agent. -->
+    <RollForward>Major</RollForward>
     <!-- Duplicate of root Directory.Build.props -->
     <MSBuildPackageReferenceVersion Condition=" '$(MSBuildPackageReferenceVersion)' == '' ">17.13.9</MSBuildPackageReferenceVersion>
   </PropertyGroup>