diff --git a/src/Ulid/Ulid.Boundaries.cs b/src/Ulid/Ulid.Boundaries.cs
index 86acc4f..d477c06 100644
--- a/src/Ulid/Ulid.Boundaries.cs
+++ b/src/Ulid/Ulid.Boundaries.cs
@@ -23,7 +23,7 @@ public readonly partial struct Ulid
/// Represents the maximum possible value for a ULID.
///
///
- /// The field is a ULID where all byte components are set to their highest possible value (0xFF).
+ /// The field is a ULID where all byte components are set to their highest possible value (0xFF).
/// It can be used as a sentinel or boundary value in comparison operations or range validations.
///
public static Ulid MaxValue { get; } = New(Enumerable.Repeat((byte)0xFF, _ulidSize).ToArray());
diff --git a/src/Ulid/Ulid.Obsolete.cs b/src/Ulid/Ulid.Obsolete.cs
deleted file mode 100644
index a873b64..0000000
--- a/src/Ulid/Ulid.Obsolete.cs
+++ /dev/null
@@ -1,102 +0,0 @@
-using System.Diagnostics.CodeAnalysis;
-using System.Runtime.CompilerServices;
-
-namespace ByteAether.Ulid;
-
-public readonly partial struct Ulid
-{
- ///
- /// Represents the maximum possible value for a ULID.
- ///
- ///
- /// The field is a ULID where all byte components are set to their highest possible value (0xFF).
- /// It can be used as a sentinel or boundary value in comparison operations or range validations.
- ///
- [Obsolete("Use MaxValue instead.")]
- public static Ulid Max => MaxValue;
-
- ///
- /// Whether s should be generated in a monotonic manner by default.
- /// Initial value is set to true.
- /// This setting applies globally without any scoping.
- ///
- ///
- /// When set to true (default), s generated without explicitly specifying monotonicity
- /// will ensure that they are monotonically increasing.
- /// When set to false, s generated without explicitly specifying monotonicity will be
- /// generated with random value.
- ///
- [Obsolete("Use DefaultGenerationOptions instead.")]
- public static bool DefaultIsMonotonic
- {
- get => ObsoleteHelper.GetByGenerationOptions(DefaultGenerationOptions);
- set => DefaultGenerationOptions = ObsoleteHelper.GetByBoolean(value);
- }
-
- ///
- /// Creates a new with the current timestamp.
- ///
- ///
- /// If true, ensures the is monotonically increasing.
- /// If false, generates a random part in .
- ///
- /// A new instance.
- [MethodImpl(MethodImplOptions.AggressiveInlining)]
- [Obsolete("Use method with DefaultGenerationOptions argument instead.")]
- public static Ulid New(bool isMonotonic)
- => New(ObsoleteHelper.GetByBoolean(isMonotonic));
-
- ///
- /// Creates a new with the specified timestamp.
- ///
- /// The timestamp to use for the .
- ///
- /// If true, ensures the is monotonically increasing.
- /// If false, generates a random part in .
- ///
- /// A new instance.
- [MethodImpl(MethodImplOptions.AggressiveInlining)]
- [Obsolete("Use method with DefaultGenerationOptions argument instead.")]
- public static Ulid New(DateTimeOffset dateTimeOffset, bool isMonotonic)
- => New(dateTimeOffset, ObsoleteHelper.GetByBoolean(isMonotonic));
-
- ///
- /// Creates a new with the specified timestamp in milliseconds.
- ///
- /// The timestamp in milliseconds to use for the .
- ///
- /// If true, ensures the is monotonically increasing.
- /// If false, generates a random part in .
- ///
- /// A new instance.
- [MethodImpl(MethodImplOptions.AggressiveInlining)]
- [Obsolete("Use method with DefaultGenerationOptions argument instead.")]
- public static Ulid New(long timestamp, bool isMonotonic)
- => New(timestamp, ObsoleteHelper.GetByBoolean(isMonotonic));
-}
-
-internal static class ObsoleteHelper
-{
- private static readonly Ulid.GenerationOptions _monotonicDefaultOptions = new();
-
- private static readonly Ulid.GenerationOptions _nonmonotonicDefaultOptions = new()
- {
- InitialRandomSource = new CryptographicallySecureRandomProvider(),
- IncrementRandomSource = new PseudoRandomProvider(), // This has no effect
- Monotonicity = Ulid.GenerationOptions.MonotonicityOptions.NonMonotonic
- };
-
- [MethodImpl(MethodImplOptions.AggressiveInlining)]
- [return: NotNullIfNotNull(nameof(isMonotonic))]
- public static Ulid.GenerationOptions? GetByBoolean(bool? isMonotonic)
- => isMonotonic switch
- {
- true => _monotonicDefaultOptions,
- false => _nonmonotonicDefaultOptions,
- _ => null
- };
-
- [MethodImpl(MethodImplOptions.AggressiveInlining)]
- public static bool GetByGenerationOptions(Ulid.GenerationOptions options)
- => options.Monotonicity != Ulid.GenerationOptions.MonotonicityOptions.NonMonotonic;
-}
\ No newline at end of file