diff --git a/go.mod b/go.mod
index 6a804cb9a2..931995c4c7 100644
--- a/go.mod
+++ b/go.mod
@@ -20,7 +20,6 @@ require (
 	github.com/libp2p/go-libp2p-asn-util v0.1.0
 	github.com/libp2p/go-libp2p-circuit v0.6.0
 	github.com/libp2p/go-libp2p-core v0.15.1
-	github.com/libp2p/go-libp2p-mplex v0.5.0
 	github.com/libp2p/go-libp2p-nat v0.1.0
 	github.com/libp2p/go-libp2p-noise v0.4.0
 	github.com/libp2p/go-libp2p-peerstore v0.6.0
@@ -28,6 +27,7 @@ require (
 	github.com/libp2p/go-libp2p-testing v0.9.2
 	github.com/libp2p/go-libp2p-tls v0.4.1
 	github.com/libp2p/go-libp2p-transport-upgrader v0.7.1
+	github.com/libp2p/go-mplex v0.4.0
 	github.com/libp2p/go-msgio v0.2.0
 	github.com/libp2p/go-netroute v0.2.0
 	github.com/libp2p/go-reuseport v0.1.0
@@ -86,7 +86,6 @@ require (
 	github.com/libp2p/go-libp2p-quic-transport v0.17.0 // indirect
 	github.com/libp2p/go-libp2p-swarm v0.10.2 // indirect
 	github.com/libp2p/go-libp2p-yamux v0.9.1 // indirect
-	github.com/libp2p/go-mplex v0.4.0 // indirect
 	github.com/libp2p/go-nat v0.1.0 // indirect
 	github.com/libp2p/go-openssl v0.0.7 // indirect
 	github.com/libp2p/go-tcp-transport v0.5.1 // indirect
diff --git a/p2p/transport/tcp/tcp_test.go b/p2p/transport/tcp/tcp_test.go
index b650e9cbfa..5abec14953 100644
--- a/p2p/transport/tcp/tcp_test.go
+++ b/p2p/transport/tcp/tcp_test.go
@@ -5,16 +5,16 @@ import (
 	"errors"
 	"testing"
 
-	"github.com/libp2p/go-libp2p-core/network"
+	mplex "github.com/libp2p/go-libp2p/p2p/muxer/mplex"
 
 	"github.com/libp2p/go-libp2p-core/crypto"
+	"github.com/libp2p/go-libp2p-core/network"
 	"github.com/libp2p/go-libp2p-core/peer"
 	"github.com/libp2p/go-libp2p-core/sec"
 	"github.com/libp2p/go-libp2p-core/sec/insecure"
 	"github.com/libp2p/go-libp2p-core/transport"
 
 	csms "github.com/libp2p/go-conn-security-multistream"
-	mplex "github.com/libp2p/go-libp2p-mplex"
 	mocknetwork "github.com/libp2p/go-libp2p-testing/mocks/network"
 	ttransport "github.com/libp2p/go-libp2p-testing/suites/transport"
 	tptu "github.com/libp2p/go-libp2p-transport-upgrader"
diff --git a/p2p/transport/websocket/websocket_test.go b/p2p/transport/websocket/websocket_test.go
index 43c895b081..1a4f0f631a 100644
--- a/p2p/transport/websocket/websocket_test.go
+++ b/p2p/transport/websocket/websocket_test.go
@@ -15,6 +15,8 @@ import (
 	"testing"
 	"time"
 
+	mplex "github.com/libp2p/go-libp2p/p2p/muxer/mplex"
+
 	"github.com/libp2p/go-libp2p-core/crypto"
 	"github.com/libp2p/go-libp2p-core/network"
 	"github.com/libp2p/go-libp2p-core/peer"
@@ -24,7 +26,6 @@ import (
 	"github.com/libp2p/go-libp2p-core/transport"
 
 	csms "github.com/libp2p/go-conn-security-multistream"
-	mplex "github.com/libp2p/go-libp2p-mplex"
 	ttransport "github.com/libp2p/go-libp2p-testing/suites/transport"
 	tptu "github.com/libp2p/go-libp2p-transport-upgrader"