diff --git a/samples/MusicStore/MusicStore.csproj b/samples/MusicStore/MusicStore.csproj
index 3d7451cb8c..7262831ec3 100644
--- a/samples/MusicStore/MusicStore.csproj
+++ b/samples/MusicStore/MusicStore.csproj
@@ -29,6 +29,7 @@
     <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.Extensions.Configuration.CommandLine" Version="$(AspNetCoreVersion)" />
+    <PackageReference Include="System.Globalization.Extensions" Version="$(CoreFxVersion)" />
     <PackageReference Include="System.Security.Claims" Version="$(CoreFxVersion)" />
   </ItemGroup>
 
diff --git a/test/MusicStore.Test/MusicStore.Test.csproj b/test/MusicStore.Test/MusicStore.Test.csproj
index 9abe80a908..9454c5ea7b 100644
--- a/test/MusicStore.Test/MusicStore.Test.csproj
+++ b/test/MusicStore.Test/MusicStore.Test.csproj
@@ -14,6 +14,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.Logging.Testing" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="$(TestSdkVersion)" />
+    <PackageReference Include="System.Globalization.Extensions" Version="$(CoreFxVersion)" />
     <PackageReference Include="xunit" Version="$(XunitVersion)" />
     <PackageReference Include="xunit.runner.visualstudio" Version="$(XunitVersion)" />
   </ItemGroup>