diff --git a/Runtime/GuruSDKServiceImpBase.cs b/Runtime/GuruSDKServiceImpBase.cs
index f5dd444..bcf0e65 100644
--- a/Runtime/GuruSDKServiceImpBase.cs
+++ b/Runtime/GuruSDKServiceImpBase.cs
@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using UnityEngine.Purchasing.Security;
 using Guru;
 
 namespace GuruService