diff --git a/framework-dotnet/src/lib/MBS.Core/NanoId.cs b/framework-dotnet/src/lib/MBS.Core/NanoId.cs
index 6259def..5f58995 100755
--- a/framework-dotnet/src/lib/MBS.Core/NanoId.cs
+++ b/framework-dotnet/src/lib/MBS.Core/NanoId.cs
@@ -163,6 +163,8 @@ namespace MBS.Core
 
 		public const string DefaultAlphabet = "_-0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
 		public const string DefaultAlphabetNoSpecialChars = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
+		public const string CapitalAlphanumeric = "_-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+		public const string CapitalAlphanumericNoSpecialChars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 
 		private static readonly CryptoRandom Random = new CryptoRandom();
 		/// <summary>