diff --git a/src/DotNext.Tests/Buffers/Text/HexTests.cs b/src/DotNext.Tests/Buffers/Text/HexTests.cs
index b11710737..b07ec6d9b 100644
--- a/src/DotNext.Tests/Buffers/Text/HexTests.cs
+++ b/src/DotNext.Tests/Buffers/Text/HexTests.cs
@@ -28,7 +28,7 @@ public static void ToUtf16(int arraySize, bool lowercased)
     [Fact]
     public static void ToUtf16ConversionVarLength()
     {
-        ReadOnlySpan<byte> data = new byte[] { 1, 2 };
+        ReadOnlySpan<byte> data = stackalloc byte[] { 1, 2 };
         char[] encoded = new char[1];
         Equal(0, Hex.EncodeToUtf16(data, encoded));
         encoded = new char[2];
@@ -40,7 +40,7 @@ public static void ToUtf16ConversionVarLength()
     [Fact]
     public static void FromUtf16ConversionVarLength()
     {
-        ReadOnlySpan<char> data = new char[] { 'F', 'F', 'A' };
+        ReadOnlySpan<char> data = stackalloc char[] { 'F', 'F', 'A' };
         var decoded = new byte[1];
         Equal(1, Hex.DecodeFromUtf16(data, decoded));
         Equal(byte.MaxValue, decoded[0]);
diff --git a/src/DotNext/Buffers/Text/Hex.Unicode.cs b/src/DotNext/Buffers/Text/Hex.Unicode.cs
index 11994e2bc..86e0c5b90 100644
--- a/src/DotNext/Buffers/Text/Hex.Unicode.cs
+++ b/src/DotNext/Buffers/Text/Hex.Unicode.cs
@@ -158,7 +158,7 @@ static Vector256<byte> Fetch(ref byte bytePtr)
             offset = 0;
         }
 
-        ref char hexTable = ref MemoryMarshal.GetArrayDataReference(NibbleToUtf16CharLookupTable);
+        ref char hexTable = ref MemoryMarshal.GetReference(NibbleToUtf16CharLookupTable);
         if (!lowercased)
             hexTable = ref Add(ref hexTable, 16);
 
diff --git a/src/DotNext/Buffers/Text/Hex.Utf8.cs b/src/DotNext/Buffers/Text/Hex.Utf8.cs
index 87de6e5f8..67d5eb0fe 100644
--- a/src/DotNext/Buffers/Text/Hex.Utf8.cs
+++ b/src/DotNext/Buffers/Text/Hex.Utf8.cs
@@ -104,7 +104,7 @@ static Vector256<byte> Fetch(ref byte bytePtr)
             offset = 0;
         }
 
-        ref char hexTable = ref MemoryMarshal.GetArrayDataReference(NibbleToUtf16CharLookupTable);
+        ref char hexTable = ref MemoryMarshal.GetReference(NibbleToUtf16CharLookupTable);
         if (!lowercased)
             hexTable = ref Add(ref hexTable, 16);
 
diff --git a/src/DotNext/Buffers/Text/Hex.cs b/src/DotNext/Buffers/Text/Hex.cs
index 530104ff0..66ffcf800 100644
--- a/src/DotNext/Buffers/Text/Hex.cs
+++ b/src/DotNext/Buffers/Text/Hex.cs
@@ -13,7 +13,7 @@ public static partial class Hex
 {
     private const byte NibbleMaxValue = 0B1111;
 
-    private static readonly char[] NibbleToUtf16CharLookupTable = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'];
+    private static ReadOnlySpan<char> NibbleToUtf16CharLookupTable => ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'];
 
     private static ReadOnlySpan<byte> CharToNibbleLookupTable =>
         [