diff --git a/libp2p/muxers/mplex/coder.nim b/libp2p/muxers/mplex/coder.nim
index bbc8ba9bb..891e535f9 100644
--- a/libp2p/muxers/mplex/coder.nim
+++ b/libp2p/muxers/mplex/coder.nim
@@ -22,7 +22,7 @@ const DefaultChannelSize* = 1 shl 20
 
 type
   Msg* = tuple
-    id: uint
+    id: uint64
     msgType: MessageType
     data: seq[byte]
 
@@ -61,10 +61,10 @@ proc readMsg*(conn: Connection): Future[Msg] {.async, gcsafe.} =
     trace "read data", data = data.len
 
   let header = headerVarint
-  result = (header shr 3, MessageType(header and 0x7), data)
+  result = (uint64(header shr 3), MessageType(header and 0x7), data)
 
 proc writeMsg*(conn: Connection,
-               id: uint,
+               id: uint64,
                msgType: MessageType,
                data: seq[byte] = @[]) {.async, gcsafe.} =
   trace "seding data over mplex", id,
@@ -81,7 +81,7 @@ proc writeMsg*(conn: Connection,
     trace "unable to send message", exc = exc.msg
 
 proc writeMsg*(conn: Connection,
-               id: uint,
+               id: uint64,
                msgType: MessageType,
                data: string) {.async, gcsafe.} =
   result = conn.writeMsg(id, msgType, cast[seq[byte]](data))
diff --git a/libp2p/muxers/mplex/lpchannel.nim b/libp2p/muxers/mplex/lpchannel.nim
index f0b0c0090..4b0fe4339 100644
--- a/libp2p/muxers/mplex/lpchannel.nim
+++ b/libp2p/muxers/mplex/lpchannel.nim
@@ -21,7 +21,7 @@ logScope:
 
 type
   LPChannel* = ref object of BufferStream
-    id*: uint
+    id*: uint64
     name*: string
     conn*: Connection
     initiator*: bool
@@ -35,7 +35,7 @@ type
     closeCode*: MessageType
     resetCode*: MessageType
 
-proc newChannel*(id: uint,
+proc newChannel*(id: uint64,
                  conn: Connection,
                  initiator: bool,
                  name: string = "",
diff --git a/libp2p/muxers/mplex/mplex.nim b/libp2p/muxers/mplex/mplex.nim
index 0b7469e60..dd801f236 100644
--- a/libp2p/muxers/mplex/mplex.nim
+++ b/libp2p/muxers/mplex/mplex.nim
@@ -28,12 +28,12 @@ const DefaultRWTimeout = InfiniteDuration
 
 type
   Mplex* = ref object of Muxer
-    remote*: Table[uint, LPChannel]
-    local*: Table[uint, LPChannel]
-    currentId*: uint
-    maxChannels*: uint
+    remote*: Table[uint64, LPChannel]
+    local*: Table[uint64, LPChannel]
+    currentId*: uint64
+    maxChannels*: uint64
 
-proc getChannelList(m: Mplex, initiator: bool): var Table[uint, LPChannel] =
+proc getChannelList(m: Mplex, initiator: bool): var Table[uint64, LPChannel] =
   if initiator:
     trace "picking local channels", initiator = initiator
     result = m.local
@@ -43,7 +43,7 @@ proc getChannelList(m: Mplex, initiator: bool): var Table[uint, LPChannel] =
 
 proc newStreamInternal*(m: Mplex,
                         initiator: bool = true,
-                        chanId: uint = 0,
+                        chanId: uint64 = 0,
                         name: string = "",
                         lazy: bool = false):
                         Future[LPChannel] {.async, gcsafe.} =
@@ -134,8 +134,8 @@ proc newMplex*(conn: Connection,
   new result
   result.connection = conn
   result.maxChannels = maxChanns
-  result.remote = initTable[uint, LPChannel]()
-  result.local = initTable[uint, LPChannel]()
+  result.remote = initTable[uint64, LPChannel]()
+  result.local = initTable[uint64, LPChannel]()
 
   let m = result
   conn.closeEvent.wait()