diff --git a/tests/GameCult.Caching.Tests/WriteSetTests.cs b/tests/GameCult.Caching.Tests/WriteSetTests.cs
index 1be10eeb..217b57ff 100644
--- a/tests/GameCult.Caching.Tests/WriteSetTests.cs
+++ b/tests/GameCult.Caching.Tests/WriteSetTests.cs
@@ -1,5 +1,6 @@
 #nullable enable
 using System;
+using System.Buffers;
 using System.Collections.Generic;
 using System.Globalization;
 using System.IO;