diff --git a/src/SharpCompress/Utility.cs b/src/SharpCompress/Utility.cs
index d1d45582..19939bc2 100644
--- a/src/SharpCompress/Utility.cs
+++ b/src/SharpCompress/Utility.cs
@@ -4,6 +4,10 @@ using System.Buffers;
 #endif
 using System.Collections.Generic;
 using System.IO;
+using System.Linq;
+using System.Reflection;
+using System.Reflection.Emit;
+using System.Runtime.InteropServices;
 
 using SharpCompress.Readers;