diff --git a/TestSourcePackage/TestSourcePackage.csproj b/TestSourcePackage/TestSourcePackage.csproj
index cae0626..1f10a47 100644
--- a/TestSourcePackage/TestSourcePackage.csproj
+++ b/TestSourcePackage/TestSourcePackage.csproj
@@ -7,7 +7,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="Coplt.Union" Version="0.9.0-alpha.0" />
+      <PackageReference Include="Coplt.Union" Version="0.9.0-alpha.1" />
     </ItemGroup>
 
 </Project>