diff --git a/src/Directory.Build.targets b/src/Directory.Build.targets
index 63c1108cf71..f0fb4db6269 100644
--- a/src/Directory.Build.targets
+++ b/src/Directory.Build.targets
@@ -31,4 +31,13 @@
       <PackageName Include="$(PackageId)" Condition="'$(IsPackable)' == 'true'" WithPackageVersion="$(PackageVersion)" />
     </ItemGroup>
   </Target>
+
+  <!-- Used by Aspire.RepoTesting.targets to dynamically compute per-package versions for Helix testing.
+       Returns the PackageId and its computed PackageVersion for packable projects. The version is computed
+       per-project by the Arcade SDK, respecting SuppressFinalPackageVersion, StabilizePackageVersion, etc. -->
+  <Target Name="ReturnPackageVersion" Returns="@(_ReturnedPackageVersion)">
+    <ItemGroup>
+      <_ReturnedPackageVersion Include="$(PackageId)" Version="$(PackageVersion)" Condition="'$(IsPackable)' == 'true'" />
+    </ItemGroup>
+  </Target>
 </Project>
diff --git a/tests/Shared/RepoTesting/Aspire.RepoTesting.targets b/tests/Shared/RepoTesting/Aspire.RepoTesting.targets
index e29d62d1ac8..149219486bb 100644
--- a/tests/Shared/RepoTesting/Aspire.RepoTesting.targets
+++ b/tests/Shared/RepoTesting/Aspire.RepoTesting.targets
@@ -33,7 +33,7 @@
     `AspireProjectOrPackageReference` - maps to projects in `src/` or `src/Components/`
   -->
 
-  <Import Project="Sdk.props" Sdk="Aspire.AppHost.Sdk" Version="$(PackageVersion)" Condition="'$(IsAspireHost)' == 'true' and '$(RepoRoot)' == '' and '$(TestsRunningOutsideOfRepo)' == 'true'" />
+  <Import Project="Sdk.props" Sdk="Aspire.AppHost.Sdk" Version="$(AspireAppHostSdkVersion)" Condition="'$(IsAspireHost)' == 'true' and '$(RepoRoot)' == '' and '$(TestsRunningOutsideOfRepo)' == 'true'" />
 
   <PropertyGroup>
     <!-- copy by default only when archiving tests, and for test projects that support running out of repo -->
@@ -107,7 +107,33 @@
 
   <!-- Generate before the build so the projects can use this in a <None ..> item -->
   <Target Name="_GeneratePackagesVersionsProps" BeforeTargets="BeforeBuild" Condition="'$(DeployOutsideOfRepoSupportFiles)' == 'true' and '$(IsTestUtilityProject)' != 'true'">
-    <!-- Duplicate all the @(PackageVersion) items with the evaluated versions -->
+    <!-- Enumerate all src projects to get their per-package versions (respects SuppressFinalPackageVersion, etc.) -->
+    <ItemGroup>
+      <_SrcProjectsForVersions Include="$(RepoRoot)src\**\*.csproj"
+                               Exclude="$(RepoRoot)src\Aspire.ProjectTemplates\templates\**\*.csproj" />
+    </ItemGroup>
+
+    <MSBuild Projects="@(_SrcProjectsForVersions)"
+             Targets="ReturnPackageVersion"
+             BuildInParallel="true">
+      <Output TaskParameter="TargetOutputs" ItemName="_AspirePackageVersions" />
+    </MSBuild>
+
+    <!-- Format Aspire package versions as XML PackageVersion entries -->
+    <ItemGroup>
+      <_AspirePackageVersionXml Include="@(_AspirePackageVersions -> '&lt;PackageVersion Include=&quot;%(Identity)&quot; Version=&quot;%(Version)&quot; /&gt;')" />
+    </ItemGroup>
+
+    <!-- Extract the Aspire.AppHost.Sdk version for SDK imports in Aspire.RepoTesting.targets -->
+    <FindInList List="@(_AspirePackageVersions)" ItemSpecToFind="Aspire.AppHost.Sdk">
+      <Output TaskParameter="ItemFound" ItemName="_AppHostSdkItem" />
+    </FindInList>
+
+    <PropertyGroup>
+      <_AspireAppHostSdkVersion>%(_AppHostSdkItem.Version)</_AspireAppHostSdkVersion>
+    </PropertyGroup>
+
+    <!-- Duplicate all the @(PackageVersion) items (3rd-party packages) with the evaluated versions -->
     <ItemGroup>
       <_PackageVersionEvaluated Include="@(PackageVersion -> '&lt;PackageVersion Include=&quot;%(Identity)&quot; Version=&quot;%(Version)&quot; /&gt;')" />
 
@@ -126,15 +152,21 @@
       <Project>
         <PropertyGroup>
           <PackageVersion>$(PackageVersion)</PackageVersion>
+          <AspireAppHostSdkVersion>$(_AspireAppHostSdkVersion)</AspireAppHostSdkVersion>
 
           <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
         </PropertyGroup>
 
-        <ItemGroup>
+        <ItemGroup Label="3rd-party packages">
             @(_PackageVersionEvaluated, '
             ')
         </ItemGroup>
 
+        <ItemGroup Label="Aspire packages (dynamically computed)">
+            @(_AspirePackageVersionXml, '
+            ')
+        </ItemGroup>
+
         <PropertyGroup Label="From PropertyForHelixRun">
             @(_PropertiesToPassEvaluated, '
             ')
@@ -165,6 +197,6 @@
     <AspireHostingSDKVersion>$(MajorVersion).$(MinorVersion).$(PatchVersion)</AspireHostingSDKVersion>
   </PropertyGroup>
 
-  <Import Project="Sdk.targets" Sdk="Aspire.AppHost.Sdk" Version="$(PackageVersion)" Condition="'$(IsAspireHost)' == 'true' and '$(RepoRoot)' == '' and '$(TestsRunningOutsideOfRepo)' == 'true'" />
+  <Import Project="Sdk.targets" Sdk="Aspire.AppHost.Sdk" Version="$(AspireAppHostSdkVersion)" Condition="'$(IsAspireHost)' == 'true' and '$(RepoRoot)' == '' and '$(TestsRunningOutsideOfRepo)' == 'true'" />
 
 </Project>
diff --git a/tests/Shared/RepoTesting/Directory.Packages.Helix.props b/tests/Shared/RepoTesting/Directory.Packages.Helix.props
index 5428992b1ba..3fc23db0486 100644
--- a/tests/Shared/RepoTesting/Directory.Packages.Helix.props
+++ b/tests/Shared/RepoTesting/Directory.Packages.Helix.props
@@ -1,84 +1,13 @@
 <Project>
   <Import Project="$(MSBuildThisFileDirectory)Directory.Packages.Versions.props" />
 
-  <ItemGroup Label="Aspire packages">
-    <PackageVersion Include="Aspire.Azure.AI.OpenAI" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Azure.Data.Tables" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Azure.Messaging.EventHubs" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Azure.Messaging.ServiceBus" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Azure.Messaging.WebPubSub" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Azure.Search.Documents" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Azure.Security.KeyVault" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Azure.Storage.Blobs" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Azure.Storage.Queues" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Azure.Npgsql.EntityFrameworkCore.PostgreSQL" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Confluent.Kafka" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.AppHost" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Azure" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Azure.AppConfiguration" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Azure.AppContainers" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Azure.ApplicationInsights" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Azure.CognitiveServices" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Azure.CosmosDB" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Azure.ContainerRegistry" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Azure.EventHubs" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Azure.Functions" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Azure.KeyVault" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Azure.OperationalInsights" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Azure.PostgreSQL" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Azure.Redis" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Azure.Search" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Azure.ServiceBus" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Azure.SignalR" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Azure.Sql" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Azure.Storage" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Azure.WebPubSub" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Docker" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Garnet" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Kafka" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Keycloak" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Milvus" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.MongoDB" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.MySql" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Nats" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.JavaScript" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Oracle" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Orleans" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.PostgreSQL" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Python" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Qdrant" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.RabbitMQ" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Redis" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.AppHost.Sdk" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Seq" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.SqlServer" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Testing" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Valkey" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Hosting.Yarp" Version="$(PackageVersion)" />
-
-    <PackageVersion Include="Aspire.Keycloak.Authentication" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Microsoft.Azure.Cosmos" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Microsoft.Data.SqlClient" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Microsoft.EntityFrameworkCore.Cosmos" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Microsoft.EntityFrameworkCore.SqlServer" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Milvus.Client" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.MongoDB.Driver" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.MongoDB.Driver.v2" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.MySqlConnector" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.NATS.Net" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Npgsql" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Npgsql.EntityFrameworkCore.PostgreSQL" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Oracle.EntityFrameworkCore" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Pomelo.EntityFrameworkCore.MySql" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Qdrant.Client" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.RabbitMQ.Client" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.RabbitMQ.Client.v6" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.Seq" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.StackExchange.Redis" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.StackExchange.Redis.DistributedCaching" Version="$(PackageVersion)" />
-    <PackageVersion Include="Aspire.StackExchange.Redis.OutputCaching" Version="$(PackageVersion)" />
-  </ItemGroup>
+  <!--
+    Aspire package versions are dynamically computed and included in the generated
+    Directory.Packages.Versions.props file. They are produced by calling the ReturnPackageVersion
+    target on each packable src project, which returns the per-project PackageVersion computed by
+    the Arcade SDK (respecting SuppressFinalPackageVersion, StabilizePackageVersion, etc.).
+    See _GeneratePackagesVersionsProps target in Aspire.RepoTesting.targets for details.
+  -->
 
   <ItemGroup Label="For tests">
     <PackageVersion Include="mstest.testadapter" Version="$(MSTestTestAdapterVersion)" />