diff --git a/src/Pharmacist.Core/NuGet/NuGetPackageHelper.cs b/src/Pharmacist.Core/NuGet/NuGetPackageHelper.cs
index bbe3793..29f3372 100644
--- a/src/Pharmacist.Core/NuGet/NuGetPackageHelper.cs
+++ b/src/Pharmacist.Core/NuGet/NuGetPackageHelper.cs
@@ -16,6 +16,7 @@
 using NuGet.LibraryModel;
 using NuGet.Packaging;
 using NuGet.Packaging.Core;
+using NuGet.Protocol;
 using NuGet.Protocol.Core.Types;
 using NuGet.Versioning;