diff --git a/defaults.go b/defaults.go
index f3e8aeba4..039cef485 100644
--- a/defaults.go
+++ b/defaults.go
@@ -6,7 +6,6 @@ import (
 	"crypto/rand"
 
 	"github.com/libp2p/go-libp2p-core/crypto"
-	mplex "github.com/libp2p/go-libp2p-mplex"
 	noise "github.com/libp2p/go-libp2p-noise"
 	"github.com/libp2p/go-libp2p-peerstore/pstoremem"
 	quic "github.com/libp2p/go-libp2p-quic-transport"
@@ -32,10 +31,7 @@ var DefaultSecurity = ChainOptions(
 //
 // Use this option when you want to *extend* the set of multiplexers used by
 // libp2p instead of replacing them.
-var DefaultMuxers = ChainOptions(
-	Muxer("/yamux/1.0.0", yamux.DefaultTransport),
-	Muxer("/mplex/6.7.0", mplex.DefaultTransport),
-)
+var DefaultMuxers = Muxer("/yamux/1.0.0", yamux.DefaultTransport)
 
 // DefaultTransports are the default libp2p transports.
 //
diff --git a/go.mod b/go.mod
index f5a64c770..57eac7fea 100644
--- a/go.mod
+++ b/go.mod
@@ -24,7 +24,6 @@ require (
 	github.com/libp2p/go-libp2p-blankhost v0.3.0
 	github.com/libp2p/go-libp2p-circuit v0.6.0
 	github.com/libp2p/go-libp2p-core v0.14.0
-	github.com/libp2p/go-libp2p-mplex v0.6.0
 	github.com/libp2p/go-libp2p-nat v0.1.0
 	github.com/libp2p/go-libp2p-noise v0.3.0
 	github.com/libp2p/go-libp2p-peerstore v0.6.0
diff --git a/go.sum b/go.sum
index 7c127b18e..0c97adbf2 100644
--- a/go.sum
+++ b/go.sum
@@ -421,9 +421,8 @@ github.com/libp2p/go-libp2p-core v0.12.0/go.mod h1:ECdxehoYosLYHgDDFa2N4yE8Y7aQR
 github.com/libp2p/go-libp2p-core v0.14.0 h1:0kYSgiK/D7Eo28GTuRXo5YHsWwAisVpFCqCVPUd/vJs=
 github.com/libp2p/go-libp2p-core v0.14.0/go.mod h1:tLasfcVdTXnixsLB0QYaT1syJOhsbrhG7q6pGrHtBg8=
 github.com/libp2p/go-libp2p-mplex v0.4.1/go.mod h1:cmy+3GfqfM1PceHTLL7zQzAAYaryDu6iPSC+CIb094g=
+github.com/libp2p/go-libp2p-mplex v0.5.0 h1:vt3k4E4HSND9XH4Z8rUpacPJFSAgLOv6HDvG8W9Ks9E=
 github.com/libp2p/go-libp2p-mplex v0.5.0/go.mod h1:eLImPJLkj3iG5t5lq68w3Vm5NAQ5BcKwrrb2VmOYb3M=
-github.com/libp2p/go-libp2p-mplex v0.6.0 h1:5ubK4/vLE2JkogKlJ2JLeXcSfA6qY6mE2HMJV9ve/Sk=
-github.com/libp2p/go-libp2p-mplex v0.6.0/go.mod h1:i3usuPrBbh9FD2fLZjGpotyNkwr42KStYZQY7BeTiu4=
 github.com/libp2p/go-libp2p-nat v0.1.0 h1:vigUi2MEN+fwghe5ijpScxtbbDz+L/6y8XwlzYOJgSY=
 github.com/libp2p/go-libp2p-nat v0.1.0/go.mod h1:DQzAG+QbDYjN1/C3B6vXucLtz3u9rEonLVPtZVzQqks=
 github.com/libp2p/go-libp2p-noise v0.3.0 h1:NCVH7evhVt9njbTQshzT7N1S3Q6fjj9M11FCgfH5+cA=
@@ -464,9 +463,8 @@ github.com/libp2p/go-libp2p-yamux v0.8.2 h1:6GKWntresp0TFxMP/oSoH96nV8XKJRdynXsd
 github.com/libp2p/go-libp2p-yamux v0.8.2/go.mod h1:rUozF8Jah2dL9LLGyBaBeTQeARdwhefMCTQVQt6QobE=
 github.com/libp2p/go-maddr-filter v0.1.0/go.mod h1:VzZhTXkMucEGGEOSKddrwGiOv0tUhgnKqNEmIAz/bPU=
 github.com/libp2p/go-mplex v0.3.0/go.mod h1:0Oy/A9PQlwBytDRp4wSkFnzHYDKcpLot35JQ6msjvYQ=
+github.com/libp2p/go-mplex v0.4.0 h1:Ukkez9/4EOX5rTw4sHefNJp10dksftAA05ZgyjplUbM=
 github.com/libp2p/go-mplex v0.4.0/go.mod h1:y26Lx+wNVtMYMaPu300Cbot5LkEZ4tJaNYeHeT9dh6E=
-github.com/libp2p/go-mplex v0.6.0 h1:5kKp029zrsLVJT5q6ASt4LwuZFxj3B13wXXaGmFrWg0=
-github.com/libp2p/go-mplex v0.6.0/go.mod h1:y26Lx+wNVtMYMaPu300Cbot5LkEZ4tJaNYeHeT9dh6E=
 github.com/libp2p/go-msgio v0.0.4/go.mod h1:63lBBgOTDKQL6EWazRMCwXsEeEeK9O2Cd+0+6OOuipQ=
 github.com/libp2p/go-msgio v0.0.6/go.mod h1:4ecVB6d9f4BDSL5fqvPiC4A3KivjWn+Venn/1ALLMWA=
 github.com/libp2p/go-msgio v0.1.0 h1:8Q7g/528ivAlfXTFWvWhVjTE8XG8sDTkRUKPYh9+5Q8=