diff --git a/client.go b/client.go
index 71e72dce..0a26fba9 100644
--- a/client.go
+++ b/client.go
@@ -25,8 +25,6 @@ type client struct {
 	// If it is started with Dial, we take a packet conn as a parameter.
 	createdPacketConn bool
 
-	hostname string
-
 	packetHandlers packetHandlerManager
 
 	token      []byte
@@ -159,13 +157,12 @@ func newClient(
 	closeCallback func(protocol.ConnectionID),
 	createdPacketConn bool,
 ) (*client, error) {
-	var hostname string
-	if tlsConf != nil {
-		hostname = tlsConf.ServerName
+	if tlsConf == nil {
+		tlsConf = &tls.Config{}
 	}
-	if hostname == "" {
+	if tlsConf.ServerName == "" {
 		var err error
-		hostname, _, err = net.SplitHostPort(host)
+		tlsConf.ServerName, _, err = net.SplitHostPort(host)
 		if err != nil {
 			return nil, err
 		}
@@ -186,7 +183,6 @@ func newClient(
 	c := &client{
 		conn:              &conn{pconn: pconn, currentAddr: remoteAddr},
 		createdPacketConn: createdPacketConn,
-		hostname:          hostname,
 		tlsConf:           tlsConf,
 		config:            config,
 		version:           config.Versions[0],
@@ -286,7 +282,7 @@ func (c *client) generateConnectionIDs() error {
 }
 
 func (c *client) dial(ctx context.Context) error {
-	c.logger.Infof("Starting new connection to %s (%s -> %s), source connection ID %s, destination connection ID %s, version %s", c.hostname, c.conn.LocalAddr(), c.conn.RemoteAddr(), c.srcConnID, c.destConnID, c.version)
+	c.logger.Infof("Starting new connection to %s (%s -> %s), source connection ID %s, destination connection ID %s, version %s", c.tlsConf.ServerName, c.conn.LocalAddr(), c.conn.RemoteAddr(), c.srcConnID, c.destConnID, c.version)
 
 	var err error
 	if c.version.UsesTLS() {
@@ -324,7 +320,6 @@ func (c *client) dialTLS(ctx context.Context) error {
 		return err
 	}
 	mintConf.ExtensionHandler = extHandler
-	mintConf.ServerName = c.hostname
 	c.mintConf = mintConf
 
 	if err := c.createNewTLSSession(extHandler.GetPeerParams(), c.version); err != nil {
@@ -513,7 +508,6 @@ func (c *client) createNewGQUICSession() error {
 	sess, err := newClientSession(
 		c.conn,
 		runner,
-		c.hostname,
 		c.version,
 		c.destConnID,
 		c.srcConnID,
diff --git a/client_test.go b/client_test.go
index ef39eec2..287138c1 100644
--- a/client_test.go
+++ b/client_test.go
@@ -33,7 +33,7 @@ var _ = Describe("Client", func() {
 
 		supportedVersionsWithoutGQUIC44 []protocol.VersionNumber
 
-		originalClientSessConstructor func(connection, sessionRunner, string, protocol.VersionNumber, protocol.ConnectionID, protocol.ConnectionID, *tls.Config, *Config, protocol.VersionNumber, []protocol.VersionNumber, utils.Logger) (quicSession, error)
+		originalClientSessConstructor func(connection, sessionRunner, protocol.VersionNumber, protocol.ConnectionID, protocol.ConnectionID, *tls.Config, *Config, protocol.VersionNumber, []protocol.VersionNumber, utils.Logger) (quicSession, error)
 	)
 
 	// generate a packet sent by the server that accepts the QUIC version suggested by the client
@@ -132,7 +132,6 @@ var _ = Describe("Client", func() {
 			newClientSession = func(
 				conn connection,
 				_ sessionRunner,
-				_ string,
 				_ protocol.VersionNumber,
 				_ protocol.ConnectionID,
 				_ protocol.ConnectionID,
@@ -161,17 +160,16 @@ var _ = Describe("Client", func() {
 			newClientSession = func(
 				_ connection,
 				_ sessionRunner,
-				h string,
 				_ protocol.VersionNumber,
 				_ protocol.ConnectionID,
 				_ protocol.ConnectionID,
-				_ *tls.Config,
+				tlsConf *tls.Config,
 				_ *Config,
 				_ protocol.VersionNumber,
 				_ []protocol.VersionNumber,
 				_ utils.Logger,
 			) (quicSession, error) {
-				hostnameChan <- h
+				hostnameChan <- tlsConf.ServerName
 				sess := NewMockQuicSession(mockCtrl)
 				sess.EXPECT().run()
 				return sess, nil
@@ -190,7 +188,6 @@ var _ = Describe("Client", func() {
 			newClientSession = func(
 				_ connection,
 				runner sessionRunner,
-				_ string,
 				_ protocol.VersionNumber,
 				_ protocol.ConnectionID,
 				_ protocol.ConnectionID,
@@ -238,7 +235,6 @@ var _ = Describe("Client", func() {
 			newClientSession = func(
 				conn connection,
 				_ sessionRunner,
-				_ string,
 				_ protocol.VersionNumber,
 				_ protocol.ConnectionID,
 				_ protocol.ConnectionID,
@@ -277,7 +273,6 @@ var _ = Describe("Client", func() {
 			newClientSession = func(
 				conn connection,
 				_ sessionRunner,
-				_ string,
 				_ protocol.VersionNumber,
 				_ protocol.ConnectionID,
 				_ protocol.ConnectionID,
@@ -321,7 +316,6 @@ var _ = Describe("Client", func() {
 			newClientSession = func(
 				conn connection,
 				runnerP sessionRunner,
-				_ string,
 				_ protocol.VersionNumber,
 				_ protocol.ConnectionID,
 				_ protocol.ConnectionID,
@@ -361,7 +355,6 @@ var _ = Describe("Client", func() {
 			newClientSession = func(
 				connP connection,
 				_ sessionRunner,
-				_ string,
 				_ protocol.VersionNumber,
 				_ protocol.ConnectionID,
 				_ protocol.ConnectionID,
@@ -491,7 +484,6 @@ var _ = Describe("Client", func() {
 				newClientSession = func(
 					_ connection,
 					_ sessionRunner,
-					_ string,
 					_ protocol.VersionNumber,
 					_ protocol.ConnectionID,
 					_ protocol.ConnectionID,
@@ -683,7 +675,6 @@ var _ = Describe("Client", func() {
 				newClientSession = func(
 					conn connection,
 					_ sessionRunner,
-					_ string,
 					_ protocol.VersionNumber,
 					_ protocol.ConnectionID,
 					_ protocol.ConnectionID,
@@ -744,7 +735,6 @@ var _ = Describe("Client", func() {
 				newClientSession = func(
 					_ connection,
 					_ sessionRunner,
-					_ string,
 					_ protocol.VersionNumber,
 					_ protocol.ConnectionID,
 					_ protocol.ConnectionID,
@@ -757,6 +747,7 @@ var _ = Describe("Client", func() {
 					return <-sessionChan, nil
 				}
 
+				cl.tlsConf = &tls.Config{}
 				cl.config = &Config{Versions: []protocol.VersionNumber{version1, version2}}
 				dialed := make(chan struct{})
 				go func() {
@@ -791,7 +782,6 @@ var _ = Describe("Client", func() {
 				newClientSession = func(
 					_ connection,
 					_ sessionRunner,
-					_ string,
 					_ protocol.VersionNumber,
 					_ protocol.ConnectionID,
 					_ protocol.ConnectionID,
@@ -804,6 +794,7 @@ var _ = Describe("Client", func() {
 					return <-sessionChan, nil
 				}
 
+				cl.tlsConf = &tls.Config{}
 				cl.config = &Config{Versions: []protocol.VersionNumber{version1, version2, version3}}
 				dialed := make(chan struct{})
 				go func() {
@@ -934,18 +925,17 @@ var _ = Describe("Client", func() {
 		newClientSession = func(
 			connP connection,
 			_ sessionRunner,
-			hostnameP string,
 			versionP protocol.VersionNumber,
 			connIDP protocol.ConnectionID,
 			_ protocol.ConnectionID,
-			_ *tls.Config,
+			tlsConf *tls.Config,
 			configP *Config,
 			_ protocol.VersionNumber,
 			_ []protocol.VersionNumber,
 			_ utils.Logger,
 		) (quicSession, error) {
 			cconn = connP
-			hostname = hostnameP
+			hostname = tlsConf.ServerName
 			version = versionP
 			conf = configP
 			connID = connIDP
diff --git a/internal/handshake/crypto_setup_client.go b/internal/handshake/crypto_setup_client.go
index 6687b834..655449c7 100644
--- a/internal/handshake/crypto_setup_client.go
+++ b/internal/handshake/crypto_setup_client.go
@@ -69,10 +69,9 @@ var (
 // NewCryptoSetupClient creates a new CryptoSetup instance for a client
 func NewCryptoSetupClient(
 	cryptoStream io.ReadWriter,
-	hostname string,
 	connID protocol.ConnectionID,
 	version protocol.VersionNumber,
-	tlsConfig *tls.Config,
+	tlsConf *tls.Config,
 	params *TransportParameters,
 	paramsChan chan<- TransportParameters,
 	handshakeEvent chan<- struct{},
@@ -87,10 +86,10 @@ func NewCryptoSetupClient(
 	divNonceChan := make(chan struct{})
 	cs := &cryptoSetupClient{
 		cryptoStream:   cryptoStream,
-		hostname:       hostname,
+		hostname:       tlsConf.ServerName,
 		connID:         connID,
 		version:        version,
-		certManager:    crypto.NewCertManager(tlsConfig),
+		certManager:    crypto.NewCertManager(tlsConf),
 		params:         params,
 		keyDerivation:  crypto.DeriveQuicCryptoAESKeys,
 		nullAEAD:       nullAEAD,
diff --git a/internal/handshake/crypto_setup_client_test.go b/internal/handshake/crypto_setup_client_test.go
index 92633fe5..0da07224 100644
--- a/internal/handshake/crypto_setup_client_test.go
+++ b/internal/handshake/crypto_setup_client_test.go
@@ -2,6 +2,7 @@ package handshake
 
 import (
 	"bytes"
+	"crypto/tls"
 	"crypto/x509"
 	"encoding/binary"
 	"errors"
@@ -121,10 +122,9 @@ var _ = Describe("Client Crypto Setup", func() {
 		handshakeEvent = make(chan struct{}, 2)
 		csInt, err := NewCryptoSetupClient(
 			stream,
-			"hostname",
 			protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8},
 			version,
-			nil,
+			&tls.Config{ServerName: "hostname"},
 			&TransportParameters{IdleTimeout: protocol.DefaultIdleTimeout},
 			paramsChan,
 			handshakeEvent,
diff --git a/session.go b/session.go
index d69821fd..cded206b 100644
--- a/session.go
+++ b/session.go
@@ -228,7 +228,6 @@ func newSession(
 var newClientSession = func(
 	conn connection,
 	sessionRunner sessionRunner,
-	hostname string,
 	v protocol.VersionNumber,
 	destConnID protocol.ConnectionID,
 	srcConnID protocol.ConnectionID,
@@ -263,7 +262,6 @@ var newClientSession = func(
 	}
 	cs, err := newCryptoSetupClient(
 		s.cryptoStream,
-		hostname,
 		destConnID,
 		s.version,
 		tlsConf,
diff --git a/session_test.go b/session_test.go
index d0ecf53e..c44bb312 100644
--- a/session_test.go
+++ b/session_test.go
@@ -1567,7 +1567,6 @@ var _ = Describe("Client Session", func() {
 		cryptoSetup = &mockCryptoSetup{}
 		newCryptoSetupClient = func(
 			_ io.ReadWriter,
-			_ string,
 			_ protocol.ConnectionID,
 			_ protocol.VersionNumber,
 			_ *tls.Config,
@@ -1587,7 +1586,6 @@ var _ = Describe("Client Session", func() {
 		sessP, err := newClientSession(
 			mconn,
 			sessionRunner,
-			"hostname",
 			protocol.Version39,
 			protocol.ConnectionID{8, 7, 6, 5, 4, 3, 2, 1},
 			protocol.ConnectionID{8, 7, 6, 5, 4, 3, 2, 1},