diff --git a/OAuthServer/Program.cs b/OAuthServer/Program.cs
index b4496ce..3286fa9 100644
--- a/OAuthServer/Program.cs
+++ b/OAuthServer/Program.cs
@@ -1,4 +1,3 @@
-using System.Security.Cryptography;
 using Microsoft.AspNetCore.DataProtection;
 using Microsoft.AspNetCore.DataProtection.AuthenticatedEncryption;
 using Microsoft.AspNetCore.DataProtection.AuthenticatedEncryption.ConfigurationModel;