diff --git a/go.mod b/go.mod
index 8159793..f93e6d2 100644
--- a/go.mod
+++ b/go.mod
@@ -34,7 +34,7 @@ replace (
 	github.com/stretchr/testify => github.com/stretchr/testify v1.2.2
 	golang.org/x/net => golang.org/x/net v0.0.0-20190206173232-65e2d4e15006
 	golang.org/x/sync => golang.org/x/sync v0.0.0-20181108010431-42b317875d0f
-	golang.org/x/sys => golang.org/x/sys v0.0.0-20171031081856-95c657629925
+	golang.org/x/sys => golang.org/x/sys v0.0.0-20190209173611-3b5209105503
 	golang.org/x/text => golang.org/x/text v0.3.1-0.20181227161524-e6919f6577db
 	golang.org/x/tools => golang.org/x/tools v0.0.0-20190205050122-7f7074d5bcfd
 	gopkg.in/check.v1 => gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405
diff --git a/go.sum b/go.sum
index 954fb57..221b211 100644
--- a/go.sum
+++ b/go.sum
@@ -32,7 +32,7 @@ github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXf
 golang.org/x/net v0.0.0-20190206173232-65e2d4e15006 h1:bfLnR+k0tq5Lqt6dflRLcZiz6UaXCMt3vhYJ1l4FQ80=
 golang.org/x/net v0.0.0-20190206173232-65e2d4e15006/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20171031081856-95c657629925/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190209173611-3b5209105503/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/text v0.3.1-0.20181227161524-e6919f6577db h1:6/JqlYfC1CCaLnGceQTI+sDGhC9UBSPAsBqI0Gun6kU=
 golang.org/x/text v0.3.1-0.20181227161524-e6919f6577db/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/tools v0.0.0-20190205050122-7f7074d5bcfd/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=