diff --git a/go.mod b/go.mod
index bc83f37..169c2a7 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.20
 
 require (
 	github.com/gofrs/uuid/v5 v5.1.0
-	github.com/sagernet/quic-go v0.40.1
+	github.com/sagernet/quic-go v0.42.0-beta.3
 	github.com/sagernet/sing v0.3.8
 	golang.org/x/crypto v0.22.0
 	golang.org/x/exp v0.0.0-20240416160154-fe59bbe5cc7f
diff --git a/go.sum b/go.sum
index 725c67b..fa6d261 100644
--- a/go.sum
+++ b/go.sum
@@ -21,8 +21,8 @@ github.com/quic-go/qpack v0.4.0 h1:Cr9BXA1sQS2SmDUWjSofMPNKmvF6IiIfDRmgU0w1ZCo=
 github.com/quic-go/qpack v0.4.0/go.mod h1:UZVnYIfi5GRk+zI9UMaCPsmZ2xKJP7XBUvVyT1Knj9A=
 github.com/quic-go/qtls-go1-20 v0.4.1 h1:D33340mCNDAIKBqXuAvexTNMUByrYmFYVfKfDN5nfFs=
 github.com/quic-go/qtls-go1-20 v0.4.1/go.mod h1:X9Nh97ZL80Z+bX/gUXMbipO6OxdiDi58b/fMC9mAL+k=
-github.com/sagernet/quic-go v0.40.1 h1:qLeTIJR0d0JWRmDWo346nLsVN6EWihd1kalJYPEd0TM=
-github.com/sagernet/quic-go v0.40.1/go.mod h1:CcKTpzTAISxrM4PA5M20/wYuz9Tj6Tx4DwGbNl9UQrU=
+github.com/sagernet/quic-go v0.42.0-beta.3 h1:cspu1Uh1KriiDmW42OaPYokeGZT2OyfIcRMV2BdNtEo=
+github.com/sagernet/quic-go v0.42.0-beta.3/go.mod h1:lf8OYop+fMxIlrfM/ZHpENt/7ZD4JaVNqMhOlq2QMwg=
 github.com/sagernet/sing v0.3.8 h1:gm4JKalPhydMYX2zFOTnnd4TXtM/16WFRqSjMepYQQk=
 github.com/sagernet/sing v0.3.8/go.mod h1:+60H3Cm91RnL9dpVGWDPHt0zTQImO9Vfqt9a4rSambI=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
diff --git a/hysteria/packet.go b/hysteria/packet.go
index 772d63b..d19bbc3 100644
--- a/hysteria/packet.go
+++ b/hysteria/packet.go
@@ -182,7 +182,7 @@ func (c *udpPacketConn) WritePacket(buffer *buf.Buffer, destination M.Socksaddr)
 	default:
 	}
 	if buffer.Len() > 0xffff {
-		return quic.ErrMessageTooLarge(0xffff)
+		return &quic.DatagramTooLargeError{PeerMaxDatagramFrameSize: 0xffff}
 	}
 	packetId := uint16(c.packetId.Add(1) % math.MaxUint16)
 	message := allocMessage()
@@ -204,11 +204,11 @@ func (c *udpPacketConn) WritePacket(buffer *buf.Buffer, destination M.Socksaddr)
 	if err == nil {
 		return nil
 	}
-	var tooLargeErr quic.ErrMessageTooLarge
+	var tooLargeErr *quic.DatagramTooLargeError
 	if !errors.As(err, &tooLargeErr) {
 		return err
 	}
-	return c.writePackets(fragUDPMessage(message, int(tooLargeErr)-3))
+	return c.writePackets(fragUDPMessage(message, int(tooLargeErr.PeerMaxDatagramFrameSize-3)))
 }
 
 func (c *udpPacketConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
@@ -218,7 +218,7 @@ func (c *udpPacketConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
 	default:
 	}
 	if len(p) > 0xffff {
-		return 0, quic.ErrMessageTooLarge(0xffff)
+		return 0, &quic.DatagramTooLargeError{PeerMaxDatagramFrameSize: 0xffff}
 	}
 	packetId := uint16(c.packetId.Add(1) % math.MaxUint16)
 	message := allocMessage()
@@ -242,11 +242,11 @@ func (c *udpPacketConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
 	if err == nil {
 		return len(p), nil
 	}
-	var tooLargeErr quic.ErrMessageTooLarge
+	var tooLargeErr *quic.DatagramTooLargeError
 	if !errors.As(err, &tooLargeErr) {
 		return
 	}
-	err = c.writePackets(fragUDPMessage(message, int(tooLargeErr)-3))
+	err = c.writePackets(fragUDPMessage(message, int(tooLargeErr.PeerMaxDatagramFrameSize-3)))
 	if err == nil {
 		return len(p), nil
 	}
diff --git a/hysteria2/packet.go b/hysteria2/packet.go
index 89a6409..dc51dfc 100644
--- a/hysteria2/packet.go
+++ b/hysteria2/packet.go
@@ -178,7 +178,7 @@ func (c *udpPacketConn) WritePacket(buffer *buf.Buffer, destination M.Socksaddr)
 	default:
 	}
 	if buffer.Len() > 0xffff {
-		return quic.ErrMessageTooLarge(0xffff)
+		return &quic.DatagramTooLargeError{PeerMaxDatagramFrameSize: 0xffff}
 	}
 	packetId := uint16(c.packetId.Add(1) % math.MaxUint16)
 	message := allocMessage()
@@ -199,11 +199,11 @@ func (c *udpPacketConn) WritePacket(buffer *buf.Buffer, destination M.Socksaddr)
 	if err == nil {
 		return nil
 	}
-	var tooLargeErr quic.ErrMessageTooLarge
+	var tooLargeErr *quic.DatagramTooLargeError
 	if !errors.As(err, &tooLargeErr) {
 		return err
 	}
-	return c.writePackets(fragUDPMessage(message, int(tooLargeErr)-3))
+	return c.writePackets(fragUDPMessage(message, int(tooLargeErr.PeerMaxDatagramFrameSize-3)))
 }
 
 func (c *udpPacketConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
@@ -213,7 +213,7 @@ func (c *udpPacketConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
 	default:
 	}
 	if len(p) > 0xffff {
-		return 0, quic.ErrMessageTooLarge(0xffff)
+		return 0, &quic.DatagramTooLargeError{PeerMaxDatagramFrameSize: 0xffff}
 	}
 	packetId := uint16(c.packetId.Add(1) % math.MaxUint16)
 	message := allocMessage()
@@ -235,11 +235,11 @@ func (c *udpPacketConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
 	if err == nil {
 		return len(p), nil
 	}
-	var tooLargeErr quic.ErrMessageTooLarge
+	var tooLargeErr *quic.DatagramTooLargeError
 	if !errors.As(err, &tooLargeErr) {
 		return
 	}
-	err = c.writePackets(fragUDPMessage(message, int(tooLargeErr)-3))
+	err = c.writePackets(fragUDPMessage(message, int(tooLargeErr.PeerMaxDatagramFrameSize-3)))
 	if err == nil {
 		return len(p), nil
 	}
diff --git a/tuic/packet.go b/tuic/packet.go
index ecb43e4..5b49591 100644
--- a/tuic/packet.go
+++ b/tuic/packet.go
@@ -187,7 +187,7 @@ func (c *udpPacketConn) WritePacket(buffer *buf.Buffer, destination M.Socksaddr)
 	default:
 	}
 	if buffer.Len() > 0xffff {
-		return quic.ErrMessageTooLarge(0xffff)
+		return &quic.DatagramTooLargeError{PeerMaxDatagramFrameSize: 0xffff}
 	}
 	if !destination.IsValid() {
 		return E.New("invalid destination address")
@@ -211,11 +211,11 @@ func (c *udpPacketConn) WritePacket(buffer *buf.Buffer, destination M.Socksaddr)
 	if err == nil {
 		return nil
 	}
-	var tooLargeErr quic.ErrMessageTooLarge
+	var tooLargeErr *quic.DatagramTooLargeError
 	if !errors.As(err, &tooLargeErr) {
 		return err
 	}
-	c.udpMTU = int(tooLargeErr) - 3
+	c.udpMTU = int(tooLargeErr.PeerMaxDatagramFrameSize) - 3
 	return c.writePackets(fragUDPMessage(message, c.udpMTU))
 }
 
@@ -226,7 +226,7 @@ func (c *udpPacketConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
 	default:
 	}
 	if len(p) > 0xffff {
-		return 0, quic.ErrMessageTooLarge(0xffff)
+		return 0, &quic.DatagramTooLargeError{PeerMaxDatagramFrameSize: 0xffff}
 	}
 	destination := M.SocksaddrFromNet(addr)
 	if !destination.IsValid() {
@@ -252,11 +252,11 @@ func (c *udpPacketConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
 	if err == nil {
 		return len(p), nil
 	}
-	var tooLargeErr quic.ErrMessageTooLarge
+	var tooLargeErr *quic.DatagramTooLargeError
 	if !errors.As(err, &tooLargeErr) {
 		return
 	}
-	c.udpMTU = int(tooLargeErr) - 3
+	c.udpMTU = int(tooLargeErr.PeerMaxDatagramFrameSize) - 3
 	err = c.writePackets(fragUDPMessage(message, c.udpMTU))
 	if err == nil {
 		return len(p), nil