diff --git a/Runtime/MarchingSquares/IMarchingSquaresData.cs b/Runtime/MarchingSquares/IMarchingSquaresData.cs
index 5caec064..caf7cac5 100644
--- a/Runtime/MarchingSquares/IMarchingSquaresData.cs
+++ b/Runtime/MarchingSquares/IMarchingSquaresData.cs
@@ -1,11 +1,12 @@
+using System;
+
 namespace ProceduralToolkit.MarchingSquares
 {
-    public interface IMarchingSquaresData
+    public interface IMarchingSquaresData : IDisposable
     {
         int dataLengthX { get; }
         int dataLengthY { get; }
         bool useInterpolation { get; }
-        void Dispose();
         bool TestValue(int x, int y);
         bool TestAverage(int x, int y);
         float InverseLerp(int xa, int ya, int xb, int yb);