diff --git a/.travis.yml b/.travis.yml
index 0f316b14..9682077b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,7 @@ before_script:
 - uname -a
 - sudo ntpdate -u time.google.com
 - date
+- sudo setcap cap_net_admin=eip ${GOROOT}/bin/go
 script:
 - go test -p 1 -tags json -v v2ray.com/core/...
 after_success:
diff --git a/shippable.yml b/shippable.yml
index 841dd0a1..5962c494 100644
--- a/shippable.yml
+++ b/shippable.yml
@@ -15,6 +15,7 @@ build:
     - tar -C /usr/local -xzf golang.tar.gz
     - export PATH=$PATH:/usr/local/go/bin
     - export GOPATH=/v2ray
+    - sudo setcap cap_net_admin=eip /usr/loca/go/bin/go
     - go get v2ray.com/core/...
     - go get v2ray.com/ext/...
     - go test -p 1 -v v2ray.com/core/...
diff --git a/transport/internet/sockopt_linux_test.go b/transport/internet/sockopt_linux_test.go
index 1d2cfc4c..9bf08433 100644
--- a/transport/internet/sockopt_linux_test.go
+++ b/transport/internet/sockopt_linux_test.go
@@ -12,8 +12,6 @@ import (
 )
 
 func TestSockOptMark(t *testing.T) {
-	t.Skip("requires CAP_NET_ADMIN")
-
 	tcpServer := tcp.Server{
 		MsgProcessor: func(b []byte) []byte {
 			return b