diff --git a/go.mod b/go.mod
index 02dcab7..d1f4c64 100644
--- a/go.mod
+++ b/go.mod
@@ -13,5 +13,5 @@ require (
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/spf13/pflag v1.0.0
 	github.com/stretchr/testify v1.2.1
-	golang.org/x/sys v0.0.0-20180416112224-2f57af4873d0 // indirect
+	golang.org/x/sys v0.1.0 // indirect
 )
diff --git a/go.sum b/go.sum
index c993d81..4e76156 100644
--- a/go.sum
+++ b/go.sum
@@ -18,5 +18,5 @@ github.com/spf13/pflag v1.0.0 h1:oaPbdDe/x0UncahuwiPxW1GYJyilRAdsPnq3e1yaPcI=
 github.com/spf13/pflag v1.0.0/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
 github.com/stretchr/testify v1.2.1 h1:52QO5WkIUcHGIR7EnGagH88x1bUzqGXTC5/1bDTUQ7U=
 github.com/stretchr/testify v1.2.1/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
-golang.org/x/sys v0.0.0-20180416112224-2f57af4873d0 h1:goCgebTlSix0UXmgLcLKsA4BqtNMrWArPuW6gdIus/E=
-golang.org/x/sys v0.0.0-20180416112224-2f57af4873d0/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.1.0 h1:kunALQeHf1/185U1i0GOB/fy1IPRDDpuoOOqRReG57U=
+golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=