diff --git a/server/src/main.rs b/server/src/main.rs
index eac6387..0b1f6f3 100644
--- a/server/src/main.rs
+++ b/server/src/main.rs
@@ -4,12 +4,12 @@ use std::io::Error;
 use bytes::Bytes;
 use clap::Parser;
 use fastwebsockets::{
-    upgrade, CloseCode, FragmentCollector, FragmentCollectorRead, Frame, OpCode, Payload,
-    WebSocket, WebSocketError,
+    upgrade::{self, UpgradeFut}, CloseCode, FragmentCollector, FragmentCollectorRead, Frame, OpCode, Payload,
+    WebSocketError,
 };
 use futures_util::{SinkExt, StreamExt, TryFutureExt};
 use hyper::{
-    body::Incoming, server::conn::http1, service::service_fn, upgrade::Upgraded, Request, Response,
+    body::Incoming, server::conn::http1, service::service_fn, Request, Response,
     StatusCode,
 };
 use hyper_util::rt::TokioIo;
@@ -54,9 +54,6 @@ struct Cli {
     /// Whether the server should block ports other than 80 or 443
     #[arg(long)]
     block_non_http: bool,
-    /// Maximum WebSocket frame size allowed
-    #[arg(long, short, default_value_t = 64 << 20)]
-    frame_size: usize,
 }
 
 #[cfg(not(unix))]
@@ -143,7 +140,6 @@ async fn main() -> Result<(), Error> {
     while let Ok((stream, addr)) = socket.accept().await {
         let prefix = prefix.clone();
         tokio::spawn(async move {
-            let io = TokioIo::new(stream);
             let service = service_fn(move |res| {
                 accept_http(
                     res,
@@ -152,11 +148,10 @@ async fn main() -> Result<(), Error> {
                     opt.block_local,
                     opt.block_udp,
                     opt.block_non_http,
-                    opt.frame_size,
                 )
             });
             let conn = http1::Builder::new()
-                .serve_connection(io, service)
+                .serve_connection(TokioIo::new(stream), service)
                 .with_upgrades();
             if let Err(err) = conn.await {
                 println!("failed to serve conn: {:?}", err);
@@ -174,7 +169,6 @@ async fn accept_http(
     block_local: bool,
     block_udp: bool,
     block_non_http: bool,
-    max_size: usize,
 ) -> Result<Response<HttpBody>, WebSocketError> {
     let uri = req.uri().path().to_string();
     if upgrade::is_upgrade_request(&req)
@@ -182,17 +176,13 @@ async fn accept_http(
     {
         let (res, fut) = upgrade::upgrade(&mut req)?;
 
-        let mut ws = fut.await?;
-
-        ws.set_max_message_size(max_size);
-
         if uri.is_empty() {
             tokio::spawn(async move {
-                accept_ws(ws, addr.clone(), block_local, block_udp, block_non_http).await
+                accept_ws(fut, addr.clone(), block_local, block_udp, block_non_http).await
             });
         } else if let Some(uri) = uri.strip_prefix('/').map(|x| x.to_string()) {
             tokio::spawn(async move {
-                accept_wsproxy(ws, uri, addr.clone(), block_local, block_non_http).await
+                accept_wsproxy(fut, uri, addr.clone(), block_local, block_non_http).await
             });
         }
 
@@ -260,13 +250,13 @@ async fn handle_mux(packet: ConnectPacket, mut stream: MuxStream) -> Result<bool
 }
 
 async fn accept_ws(
-    ws: WebSocket<TokioIo<Upgraded>>,
+    ws: UpgradeFut,
     addr: String,
     block_local: bool,
     block_non_http: bool,
     block_udp: bool,
 ) -> Result<(), Box<dyn std::error::Error + Sync + Send>> {
-    let (rx, tx) = ws.split(tokio::io::split);
+    let (rx, tx) = ws.await?.split(tokio::io::split);
     let rx = FragmentCollectorRead::new(rx);
 
     println!("{:?}: connected", addr);
@@ -334,13 +324,13 @@ async fn accept_ws(
 }
 
 async fn accept_wsproxy(
-    ws: WebSocket<TokioIo<Upgraded>>,
+    ws: UpgradeFut,
     incoming_uri: String,
     addr: String,
     block_local: bool,
     block_non_http: bool,
 ) -> Result<(), Box<dyn std::error::Error + Sync + Send>> {
-    let mut ws_stream = FragmentCollector::new(ws);
+    let mut ws_stream = FragmentCollector::new(ws.await?);
 
     println!("{:?}: connected (wsproxy): {:?}", addr, incoming_uri);