diff --git a/component/dialer/dialer.go b/component/dialer/dialer.go
index 3014b812..84cc9c8d 100644
--- a/component/dialer/dialer.go
+++ b/component/dialer/dialer.go
@@ -170,7 +170,7 @@ func dualStackDialContext(ctx context.Context, dialFn dialFunc, network string,
 			select {
 			case results <- result:
 			case <-returned:
-				if result.Conn != nil {
+				if result.Conn != nil && result.error == nil {
 					_ = result.Conn.Close()
 				}
 			}
@@ -218,7 +218,7 @@ func parallelDialContext(ctx context.Context, network string, ips []netip.Addr,
 			select {
 			case results <- result:
 			case <-returned:
-				if result.Conn != nil {
+				if result.Conn != nil && result.error == nil {
 					_ = result.Conn.Close()
 				}
 			}
diff --git a/go.mod b/go.mod
index 26e47b8c..e5f99cf1 100644
--- a/go.mod
+++ b/go.mod
@@ -21,12 +21,12 @@ require (
 	github.com/metacubex/quic-go v0.32.0
 	github.com/metacubex/sing-shadowsocks v0.1.1-0.20230226153717-4e80da7e6947
 	github.com/metacubex/sing-tun v0.1.1-0.20230304153753-5058534177f3
-	github.com/metacubex/sing-wireguard v0.0.0-20230213124601-d04406a109b4
+	github.com/metacubex/sing-wireguard v0.0.0-20230310035749-f7595fcae5cb
 	github.com/miekg/dns v1.1.50
 	github.com/mroth/weightedrand/v2 v2.0.0
 	github.com/oschwald/geoip2-golang v1.8.0
 	github.com/sagernet/netlink v0.0.0-20220905062125-8043b4a9aa97
-	github.com/sagernet/sing v0.1.8-0.20230307054559-0560a4da412b
+	github.com/sagernet/sing v0.1.8
 	github.com/sagernet/sing-shadowtls v0.1.0
 	github.com/sagernet/sing-vmess v0.1.3-0.20230307060529-d110e81a50bc
 	github.com/sagernet/tfo-go v0.0.0-20230207095944-549363a7327d
diff --git a/go.sum b/go.sum
index 49666074..cf1a9a50 100644
--- a/go.sum
+++ b/go.sum
@@ -95,8 +95,8 @@ github.com/metacubex/sing-shadowsocks v0.1.1-0.20230226153717-4e80da7e6947 h1:Nn
 github.com/metacubex/sing-shadowsocks v0.1.1-0.20230226153717-4e80da7e6947/go.mod h1:U2gwhxzqgbhKCgn2B4z3t0Cj0LpMWFl/02BGCoG421w=
 github.com/metacubex/sing-tun v0.1.1-0.20230304153753-5058534177f3 h1:oQLThm1a8E7hHmoM9XF2cO0FZPsHVynC4YXW4b3liUI=
 github.com/metacubex/sing-tun v0.1.1-0.20230304153753-5058534177f3/go.mod h1:b/19bRRhwampNPV+1gVDyDsQHmuGDaplxPQkwJh1kj4=
-github.com/metacubex/sing-wireguard v0.0.0-20230213124601-d04406a109b4 h1:d96mCF/LYyC9kULd2xwcXfP0Jd8klrOngmRxuUIZg/8=
-github.com/metacubex/sing-wireguard v0.0.0-20230213124601-d04406a109b4/go.mod h1:p2VpJuxRefgVMxc8cmatMGSFNvYbjMYMsXJOe7qFstw=
+github.com/metacubex/sing-wireguard v0.0.0-20230310035749-f7595fcae5cb h1:uhvzbtOvyg2c1k1H2EeVPuPvTEjDHCq4+U0AljG40P8=
+github.com/metacubex/sing-wireguard v0.0.0-20230310035749-f7595fcae5cb/go.mod h1:7mPG9qYln+CLKBcDt7Dk4c7b3S53VzEfexMVPe6T6FM=
 github.com/metacubex/uber-atomic v0.0.0-20230202125923-feb10b770370 h1:UkViS4DCESAUEYgbIEQdD02hyMacFt6Dny+1MOJtNIo=
 github.com/metacubex/uber-atomic v0.0.0-20230202125923-feb10b770370/go.mod h1:LUxbIzbOniOlMKjJjyPfpl4v+PKK2cNJn91OQbhoJI0=
 github.com/miekg/dns v1.1.50 h1:DQUfb9uc6smULcREF09Uc+/Gd46YWqJd5DbpPE9xkcA=
@@ -127,8 +127,8 @@ github.com/sagernet/go-tun2socks v1.16.12-0.20220818015926-16cb67876a61/go.mod h
 github.com/sagernet/netlink v0.0.0-20220905062125-8043b4a9aa97 h1:iL5gZI3uFp0X6EslacyapiRz7LLSJyr4RajF/BhMVyE=
 github.com/sagernet/netlink v0.0.0-20220905062125-8043b4a9aa97/go.mod h1:xLnfdiJbSp8rNqYEdIW/6eDO4mVoogml14Bh2hSiFpM=
 github.com/sagernet/sing v0.0.0-20220817130738-ce854cda8522/go.mod h1:QVsS5L/ZA2Q5UhQwLrn0Trw+msNd/NPGEhBKR/ioWiY=
-github.com/sagernet/sing v0.1.8-0.20230307054559-0560a4da412b h1:wxqf3O+cLHm1ZWEQG1DRwApwLlTV/NLKGqF1kNCk3Ms=
-github.com/sagernet/sing v0.1.8-0.20230307054559-0560a4da412b/go.mod h1:jt1w2u7lJQFFSGLiRrRIs5YWmx4kAPfWuOejuDW9qMk=
+github.com/sagernet/sing v0.1.8 h1:6DKo2FkSHn0nUcjO7bAext/ai7y7pCusK/+fScBJ5Jk=
+github.com/sagernet/sing v0.1.8/go.mod h1:jt1w2u7lJQFFSGLiRrRIs5YWmx4kAPfWuOejuDW9qMk=
 github.com/sagernet/sing-shadowtls v0.1.0 h1:05MYce8aR5xfKIn+y7xRFsdKhKt44QZTSEQW+lG5IWQ=
 github.com/sagernet/sing-shadowtls v0.1.0/go.mod h1:Kn1VUIprdkwCgkS6SXYaLmIpKzQbqBIKJBMY+RvBhYc=
 github.com/sagernet/sing-vmess v0.1.3-0.20230307060529-d110e81a50bc h1:vqlYWupvVDRpvv2F+RtECJN+VbuKjLtmQculQvOecls=