diff --git a/src/SharpCompress/IO/SeekableSharpCompressStream.cs b/src/SharpCompress/IO/SeekableSharpCompressStream.cs
index 5a66cbfb..2f94b641 100644
--- a/src/SharpCompress/IO/SeekableSharpCompressStream.cs
+++ b/src/SharpCompress/IO/SeekableSharpCompressStream.cs
@@ -14,13 +14,13 @@ internal sealed partial class SeekableSharpCompressStream : SharpCompressStream
     /// <summary>
     /// Gets or sets whether to leave the underlying stream open when disposed.
     /// </summary>
-    public new bool LeaveStreamOpen { get; set; }
+    public override bool LeaveStreamOpen { get; }
 
     /// <summary>
     /// Gets or sets whether to throw an exception when Dispose is called.
     /// Useful for testing to ensure streams are not disposed prematurely.
     /// </summary>
-    public new bool ThrowOnDispose { get; set; }
+    public override bool ThrowOnDispose { get; set; }
 
     public SeekableSharpCompressStream(Stream stream)
         : base(Null, true, false, null)
diff --git a/src/SharpCompress/IO/SharpCompressStream.cs b/src/SharpCompress/IO/SharpCompressStream.cs
index 8c16fa4b..bcc36318 100644
--- a/src/SharpCompress/IO/SharpCompressStream.cs
+++ b/src/SharpCompress/IO/SharpCompressStream.cs
@@ -32,13 +32,13 @@ internal partial class SharpCompressStream : Stream, IStreamStack
     /// <summary>
     /// Gets or sets whether to leave the underlying stream open when disposed.
     /// </summary>
-    public bool LeaveStreamOpen { get; }
+    public virtual bool LeaveStreamOpen { get; }
 
     /// <summary>
     /// Gets or sets whether to throw an exception when Dispose is called.
     /// Useful for testing to ensure streams are not disposed prematurely.
     /// </summary>
-    public bool ThrowOnDispose { get; set; }
+    public virtual bool ThrowOnDispose { get; set; }
 
     public SharpCompressStream(Stream stream)
     {