diff --git a/src/thirtytwo/Support/RunLengthEncoder.cs b/src/thirtytwo/Support/RunLengthEncoder.cs
index 0d9a5ab..2b9d9cf 100644
--- a/src/thirtytwo/Support/RunLengthEncoder.cs
+++ b/src/thirtytwo/Support/RunLengthEncoder.cs
@@ -11,7 +11,7 @@ namespace Windows.Support;
 ///   Format used is a byte for the count, followed by a byte for the value.
 ///  </para>
 /// </remarks>
-internal static class RunLengthEncoder
+public static class RunLengthEncoder
 {
     /// <summary>
     ///  Get the encoded length, in bytes, of the given data.
diff --git a/src/thirtytwo/Support/SpanWriter.cs b/src/thirtytwo/Support/SpanWriter.cs
index aad705d..c3ea72c 100644
--- a/src/thirtytwo/Support/SpanWriter.cs
+++ b/src/thirtytwo/Support/SpanWriter.cs
@@ -9,7 +9,7 @@ namespace Windows.Support;
 /// <summary>
 ///  Fast stack based <see cref="Span{T}"/> writer.
 /// </summary>
-internal unsafe ref struct SpanWriter<T>(Span<T> span) where T : unmanaged, IEquatable<T>
+public unsafe ref struct SpanWriter<T>(Span<T> span) where T : unmanaged, IEquatable<T>
 {
     private Span<T> _unwritten = span;
     public Span<T> Span { get; } = span;