diff --git a/FlyingFox/Sources/HTTPDecoder.swift b/FlyingFox/Sources/HTTPDecoder.swift
index e0c24cd..384fac9 100644
--- a/FlyingFox/Sources/HTTPDecoder.swift
+++ b/FlyingFox/Sources/HTTPDecoder.swift
@@ -34,7 +34,7 @@ import Foundation
 
 struct HTTPDecoder {
 
-    static func decodeRequest<S>(from bytes: S) async throws -> HTTPRequest where S: AsyncChunkedSequence, S.Element == UInt8 {
+    static func decodeRequest(from bytes: some AsyncChunkedSequence<UInt8>) async throws -> HTTPRequest {
         let status = try await bytes.lines.takeNext()
         let comps = status
             .trimmingCharacters(in: .whitespacesAndNewlines)
@@ -60,7 +60,7 @@ struct HTTPDecoder {
         )
     }
 
-    static func decodeResponse<S>(from bytes: S) async throws -> HTTPResponse where S: AsyncChunkedSequence, S.Element == UInt8 {
+    static func decodeResponse(from bytes: some AsyncChunkedSequence<UInt8>) async throws -> HTTPResponse {
         let comps = try await bytes.lines.takeNext()
             .trimmingCharacters(in: .whitespacesAndNewlines)
             .split(separator: " ", maxSplits: 2, omittingEmptySubsequences: true)
diff --git a/FlyingFox/Sources/WebSocket/WSFrameEncoder.swift b/FlyingFox/Sources/WebSocket/WSFrameEncoder.swift
index 803280a..1c47b62 100644
--- a/FlyingFox/Sources/WebSocket/WSFrameEncoder.swift
+++ b/FlyingFox/Sources/WebSocket/WSFrameEncoder.swift
@@ -117,7 +117,7 @@ struct WSFrameEncoder {
         }
     }
 
-    static func decodePayload<S>(from bytes: S, length: Int, mask: WSFrame.Mask?) async throws -> Data where S: AsyncChunkedSequence, S.Element == UInt8 {
+    static func decodePayload(from bytes: some AsyncChunkedSequence<UInt8>, length: Int, mask: WSFrame.Mask?) async throws -> Data {
         var iterator = bytes.makeAsyncIterator()
         guard var payload = try await iterator.nextChunk(count: length) else {
             throw SocketError.disconnected
@@ -130,7 +130,7 @@ struct WSFrameEncoder {
         return Data(payload)
     }
 
-    static func decodeLengthMask<S>(from bytes: S) async throws -> (length: Int, mask: WSFrame.Mask?) where S: AsyncChunkedSequence, S.Element == UInt8 {
+    static func decodeLengthMask(from bytes: some AsyncChunkedSequence<UInt8>) async throws -> (length: Int, mask: WSFrame.Mask?) {
         let byte0 = try await bytes.take()
         let hasMask = byte0 & 0b10000000 == 0b10000000
         let length0 = byte0 & 0b01111111
@@ -158,7 +158,7 @@ struct WSFrameEncoder {
         }
     }
 
-    static func decodeMask<S>(from bytes: S) async throws -> WSFrame.Mask where S: AsyncChunkedSequence, S.Element == UInt8 {
+    static func decodeMask(from bytes: some AsyncChunkedSequence<UInt8>) async throws -> WSFrame.Mask {
         try await WSFrame.Mask(m1: bytes.take(),
                                m2: bytes.take(),
                                m3: bytes.take(),