diff --git a/src/NodeApi/Interop/JSCollectionExtensions.cs b/src/NodeApi/Interop/JSCollectionExtensions.cs
index 33363b47..696b35e3 100644
--- a/src/NodeApi/Interop/JSCollectionExtensions.cs
+++ b/src/NodeApi/Interop/JSCollectionExtensions.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using System.Threading;
 using System.Threading.Tasks;