diff --git a/eng/Versions.props b/eng/Versions.props
index f3f7238a2bc..f50df70cfff 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -25,8 +25,17 @@
     <UsingToolVSSDK>true</UsingToolVSSDK>
   </PropertyGroup>
   <!-- Production Dependencies -->
-  <PropertyGroup>
-    <!-- manually maintained versions -->
+  <!-- Condition consumption of maintenance-packages dependencies based on source build.
+       This is to prevent "package downgrade" errors coming from other packages that are
+       already consuming the newest version of these same dependencies. -->
+  <PropertyGroup Condition="'$(DotNetBuildSourceOnly)' == 'true'">
+    <MicrosoftIORedistVersion>6.1.3</MicrosoftIORedistVersion>
+    <SystemMemoryVersion>4.6.3</SystemMemoryVersion>
+    <SystemRuntimeCompilerServicesUnsafeVersion>6.1.2</SystemRuntimeCompilerServicesUnsafeVersion>
+    <SystemThreadingTasksExtensionsVersion>4.6.3</SystemThreadingTasksExtensionsVersion>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(DotNetBuildSourceOnly)' != 'true'">
+    <MicrosoftIORedistVersion>6.1.0</MicrosoftIORedistVersion>
     <!--
         Modifying the version of System.Memory is very high impact and causes downstream breaks in third-party tooling that uses the MSBuild API.
         As a result, we CONTINUE TO REFERENCE the old versions at build time, so those are the versions that get embedded into MSBuild assemblies.
@@ -34,11 +43,8 @@
         See uses of $(UseFrozenMaintenancePackageVersions) for details.
     -->
     <SystemMemoryVersion>4.6.0</SystemMemoryVersion>
-    <SystemThreadingTasksExtensionsVersion>4.6.0</SystemThreadingTasksExtensionsVersion>
-    <MicrosoftIORedistVersion>6.1.0</MicrosoftIORedistVersion>
-    <MicrosoftVisualStudioOpenTelemetryVersion>0.2.104-beta</MicrosoftVisualStudioOpenTelemetryVersion>
     <SystemRuntimeCompilerServicesUnsafeVersion>6.1.0</SystemRuntimeCompilerServicesUnsafeVersion>
-    <SystemSecurityPrincipalWindowsVersion>5.0.0</SystemSecurityPrincipalWindowsVersion>
+    <SystemThreadingTasksExtensionsVersion>4.6.0</SystemThreadingTasksExtensionsVersion>
   </PropertyGroup>
   <PropertyGroup>
     <!-- dotnet/runtime packages -->
@@ -52,12 +58,14 @@
     <SystemReflectionMetadataLoadContextVersion>9.0.0</SystemReflectionMetadataLoadContextVersion>
     <SystemResourcesExtensionsVersion>9.0.0</SystemResourcesExtensionsVersion>
     <SystemSecurityCryptographyProtectedDataVersion>9.0.0</SystemSecurityCryptographyProtectedDataVersion>
+    <SystemSecurityPrincipalWindowsVersion>5.0.0</SystemSecurityPrincipalWindowsVersion>
     <SystemTextEncodingCodePagesVersion>9.0.0</SystemTextEncodingCodePagesVersion>
     <SystemTextJsonVersion>9.0.0</SystemTextJsonVersion>
     <SystemThreadingChannelsVersion>9.0.0</SystemThreadingChannelsVersion>
     <SystemThreadingTasksDataflowVersion>9.0.0</SystemThreadingTasksDataflowVersion>
   </PropertyGroup>
   <PropertyGroup>
+    <MicrosoftVisualStudioOpenTelemetryVersion>0.2.104-beta</MicrosoftVisualStudioOpenTelemetryVersion>
     <!-- maintained in eng/dependabot/Packages.props -->
     <!--
     <SystemCodeDomVersion></SystemCodeDomVersion>