diff --git a/examples-Aspire/AspireApp1.Tests/AspireApp1.Tests.csproj b/examples-Aspire/AspireApp1.Tests/AspireApp1.Tests.csproj
index e60b4f42..567bcd79 100644
--- a/examples-Aspire/AspireApp1.Tests/AspireApp1.Tests.csproj
+++ b/examples-Aspire/AspireApp1.Tests/AspireApp1.Tests.csproj
@@ -13,6 +13,7 @@
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     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
     <PackageReference Include="System.Net.Http" Version="4.3.4" />
+    <PackageReference Include="System.Text.RegularExpressions" Version="4.3.1" />
     <PackageReference Include="xunit" Version="2.5.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3" />
   </ItemGroup>