diff --git a/src/decode.ts b/src/decode.ts
index d9a5600..e4857ae 100644
--- a/src/decode.ts
+++ b/src/decode.ts
@@ -2,16 +2,6 @@ import { Decoder } from "./Decoder";
 import type { DecoderOptions } from "./Decoder";
 import type { SplitUndefined } from "./context";
 
-/**
- * @deprecated Use {@link DecoderOptions} instead.
- */
-export type DecodeOptions = never;
-
-/**
- * @deprecated No longer supported.
- */
-export const defaultDecodeOptions: never = undefined as never;
-
 /**
  * It decodes a single MessagePack object in a buffer.
  *
diff --git a/src/decodeAsync.ts b/src/decodeAsync.ts
index 1336686..d4f91dc 100644
--- a/src/decodeAsync.ts
+++ b/src/decodeAsync.ts
@@ -42,8 +42,3 @@ export function decodeMultiStream<ContextType>(
   const decoder = new Decoder(options);
   return decoder.decodeStream(stream);
 }
-
-/**
- * @deprecated Use {@link decodeMultiStream} instead.
- */
-export const decodeStream: never = undefined as never;
diff --git a/src/encode.ts b/src/encode.ts
index 581c928..392b7fe 100644
--- a/src/encode.ts
+++ b/src/encode.ts
@@ -2,16 +2,6 @@ import { Encoder } from "./Encoder";
 import type { EncoderOptions } from "./Encoder";
 import type { SplitUndefined } from "./context";
 
-/**
- * @deprecated Use {@link EncoderOptions} instead.
- */
-export type EncodeOptions = never;
-
-/**
- * @deprecated No longer supported.
- */
-export const defaultEncodeOptions: never = undefined as never;
-
 /**
  * It encodes `value` in the MessagePack format and
  * returns a byte buffer.
diff --git a/src/index.ts b/src/index.ts
index 4141ad4..ddb61d5 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -2,16 +2,12 @@
 
 import { encode } from "./encode";
 export { encode };
-import type { EncodeOptions } from "./encode";
-export type { EncodeOptions };
 
 import { decode, decodeMulti } from "./decode";
 export { decode, decodeMulti };
-import type { DecodeOptions } from "./decode";
-export type { DecodeOptions };
 
-import { decodeAsync, decodeArrayStream, decodeMultiStream, decodeStream } from "./decodeAsync";
-export { decodeAsync, decodeArrayStream, decodeMultiStream, decodeStream };
+import { decodeAsync, decodeArrayStream, decodeMultiStream } from "./decodeAsync";
+export { decodeAsync, decodeArrayStream, decodeMultiStream };
 
 import { Decoder, DataViewIndexOutOfBoundsError } from "./Decoder";
 export { Decoder, DataViewIndexOutOfBoundsError };