diff --git a/go.mod b/go.mod
index 5182ed79..fc79342d 100644
--- a/go.mod
+++ b/go.mod
@@ -11,7 +11,7 @@ require (
 	github.com/anacrolix/dht/v2 v2.13.1-0.20211209181115-6ae2bd446b12
 	github.com/anacrolix/envpprof v1.1.1
 	github.com/anacrolix/fuse v0.2.0
-	github.com/anacrolix/go-libutp v1.0.5-0.20211117031120-2dac1c67ecc5
+	github.com/anacrolix/go-libutp v1.1.0
 	github.com/anacrolix/log v0.10.0
 	github.com/anacrolix/missinggo v1.3.0
 	github.com/anacrolix/missinggo/perf v1.0.0
@@ -87,7 +87,5 @@ require (
 	modernc.org/sqlite v1.14.2-0.20211125151325-d4ed92c0a70f // indirect
 )
 
-retract (
-	// peer-requesting doesn't scale
-	[v1.34.0, v1.38.1]
-)
+// peer-requesting doesn't scale
+retract [v1.34.0, v1.38.1]
diff --git a/go.sum b/go.sum
index 885b3de7..bbd4694a 100644
--- a/go.sum
+++ b/go.sum
@@ -104,8 +104,6 @@ github.com/anacrolix/dht/v2 v2.9.1/go.mod h1:ZyYcIQinN/TE3oKONCchQOLjhYR786Jaxz3
 github.com/anacrolix/dht/v2 v2.10.0/go.mod h1:KC51tqylRYBu82RM5pEYf+g1n7db+F0tOJqSbCjjZWc=
 github.com/anacrolix/dht/v2 v2.10.5-0.20210902001729-06cc4fe90e53/go.mod h1:zHjijcebN+L7JbzxW0mOraHis+I81EIgsJAAtiw8bQ8=
 github.com/anacrolix/dht/v2 v2.10.6-0.20211007004332-99263ec9c1c8/go.mod h1:WID4DexLrucfnwzv1OV8REzgoCpyVDwEczxIOrUeFrY=
-github.com/anacrolix/dht/v2 v2.13.0 h1:nhEXbbwVL2fFEDqWJby+lSD0LEB06CW/Tgj74O5Ty9g=
-github.com/anacrolix/dht/v2 v2.13.0/go.mod h1:zJgaiAU2yhzmchZE2mY8WyZ64LK/F/D9MAeN0ct73qQ=
 github.com/anacrolix/dht/v2 v2.13.1-0.20211209181115-6ae2bd446b12 h1:W0gso1vLz1b1G9HjxsSFAWZjLZwwlPZQD20BGhwz5YU=
 github.com/anacrolix/dht/v2 v2.13.1-0.20211209181115-6ae2bd446b12/go.mod h1:zJgaiAU2yhzmchZE2mY8WyZ64LK/F/D9MAeN0ct73qQ=
 github.com/anacrolix/envpprof v0.0.0-20180404065416-323002cec2fa/go.mod h1:KgHhUaQMc8cC0+cEflSgCFNFbKwi5h54gqtVn8yhP7c=
@@ -119,8 +117,8 @@ github.com/anacrolix/fuse v0.2.0/go.mod h1:Kfu02xBwnySDpH3N23BmrP3MDfwAQGRLUCj6X
 github.com/anacrolix/go-libutp v0.0.0-20180522111405-6baeb806518d/go.mod h1:beQSaSxwH2d9Eeu5ijrEnHei5Qhk+J6cDm1QkWFru4E=
 github.com/anacrolix/go-libutp v1.0.2/go.mod h1:uIH0A72V++j0D1nnmTjjZUiH/ujPkFxYWkxQ02+7S0U=
 github.com/anacrolix/go-libutp v1.0.4/go.mod h1:8vSGX5g0b4eebsDBNVQHUXSCwYaN18Lnkse0hUW8/5w=
-github.com/anacrolix/go-libutp v1.0.5-0.20211117031120-2dac1c67ecc5 h1:VIMEtC+qYhEEBZHMvtOQKiKy+SI+u+Su/MXY8K2nOKY=
-github.com/anacrolix/go-libutp v1.0.5-0.20211117031120-2dac1c67ecc5/go.mod h1:8vSGX5g0b4eebsDBNVQHUXSCwYaN18Lnkse0hUW8/5w=
+github.com/anacrolix/go-libutp v1.1.0 h1:89XK+0NBTaKgSoG/v5OfDK0yoyrt2HInfg46I1BaT2E=
+github.com/anacrolix/go-libutp v1.1.0/go.mod h1:so9zroOUhFPGnIkddyflaCCl+xdTsRSq97/AOQ2/Hjk=
 github.com/anacrolix/log v0.0.0-20180412014343-2323884b361d/go.mod h1:sf/7c2aTldL6sRQj/4UKyjgVZBu2+M2z9wf7MmwPiew=
 github.com/anacrolix/log v0.3.0/go.mod h1:lWvLTqzAnCWPJA08T2HCstZi0L1y2Wyvm3FJgwU9jwU=
 github.com/anacrolix/log v0.3.1-0.20190913000754-831e4ffe0174/go.mod h1:lWvLTqzAnCWPJA08T2HCstZi0L1y2Wyvm3FJgwU9jwU=
@@ -134,6 +132,8 @@ github.com/anacrolix/log v0.8.0/go.mod h1:s5yBP/j046fm9odtUTbHOfDUq/zh1W8OkPpJtn
 github.com/anacrolix/log v0.9.0/go.mod h1:s5yBP/j046fm9odtUTbHOfDUq/zh1W8OkPpJtnX0oQI=
 github.com/anacrolix/log v0.10.0 h1:uz9XDnmsw8ZEO/TTRU03lL7I74PlgVRFszYqPZ39WNY=
 github.com/anacrolix/log v0.10.0/go.mod h1:s5yBP/j046fm9odtUTbHOfDUq/zh1W8OkPpJtnX0oQI=
+github.com/anacrolix/lsan v0.0.0-20211126052245-807000409a62 h1:P04VG6Td13FHMgS5ZBcJX23NPC/fiC4cp9bXwYujdYM=
+github.com/anacrolix/lsan v0.0.0-20211126052245-807000409a62/go.mod h1:66cFKPCO7Sl4vbFnAaSq7e4OXtdMhRSBagJGWgmpJbM=
 github.com/anacrolix/missinggo v0.0.0-20180522035225-b4a5853e62ff/go.mod h1:b0p+7cn+rWMIphK1gDH2hrDuwGOcbB6V4VXeSsEfHVk=
 github.com/anacrolix/missinggo v0.0.0-20180725070939-60ef2fbf63df/go.mod h1:kwGiTUTZ0+p4vAz3VbAI5a30t2YbvemcmspjKwrAz5s=
 github.com/anacrolix/missinggo v0.2.1-0.20190310234110-9fbdc9f242a8/go.mod h1:MBJu3Sk/k3ZfGYcS7z18gwfu72Ey/xopPFJJbTi5yIo=
diff --git a/socket.go b/socket.go
index 8da07d2b..fbe8d9cb 100644
--- a/socket.go
+++ b/socket.go
@@ -5,6 +5,7 @@ import (
 	"net"
 	"strconv"
 
+	utp "github.com/anacrolix/go-libutp"
 	"github.com/anacrolix/missinggo/perf"
 	"github.com/anacrolix/missinggo/v2"
 	"github.com/pkg/errors"
@@ -100,7 +101,7 @@ func listenAllRetry(nahs []networkAndHost, port int, f firewallCallback) (ss []s
 	return
 }
 
-type firewallCallback func(net.Addr) bool
+type firewallCallback = utp.FirewallCallback
 
 func listenUtp(network, addr string, fc firewallCallback) (socket, error) {
 	us, err := NewUtpSocket(network, addr, fc)
diff --git a/utp_libutp.go b/utp_libutp.go
index 1e8fa673..3cbd01c0 100644
--- a/utp_libutp.go
+++ b/utp_libutp.go
@@ -4,7 +4,7 @@
 package torrent
 
 import (
-	"github.com/anacrolix/go-libutp"
+	utp "github.com/anacrolix/go-libutp"
 )
 
 func NewUtpSocket(network, addr string, fc firewallCallback) (utpSocket, error) {
@@ -16,7 +16,7 @@ func NewUtpSocket(network, addr string, fc firewallCallback) (utpSocket, error)
 		return s, err
 	}
 	if fc != nil {
-		s.SetFirewallCallback(utp.FirewallCallback(fc))
+		s.SetSyncFirewallCallback(fc)
 	}
 	return s, err
 }