diff --git a/go.mod b/go.mod
index 3200cd6..fbdbc8c 100644
--- a/go.mod
+++ b/go.mod
@@ -22,5 +22,5 @@ require (
 	github.com/stretchr/testify v1.3.0 // indirect
 	golang.org/x/exp v0.0.0-20170423001816-239d448f23a0 // indirect
 	golang.org/x/sync v0.0.0-20190412183630-56d357773e84 // indirect
-	golang.org/x/sys v0.0.0-20180224232135-f6cff0780e54 // indirect
+	golang.org/x/sys v0.1.0 // indirect
 )
diff --git a/go.sum b/go.sum
index 0193f0e..49ff9fa 100644
--- a/go.sum
+++ b/go.sum
@@ -41,5 +41,5 @@ golang.org/x/exp v0.0.0-20170423001816-239d448f23a0 h1:PbYRgXSYI3yqRc++EI35EI4nM
 golang.org/x/exp v0.0.0-20170423001816-239d448f23a0/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/sync v0.0.0-20190412183630-56d357773e84 h1:IqXQ59gzdXv58Jmm2xn0tSOR9i6HqroaOFRQ3wR/dJQ=
 golang.org/x/sync v0.0.0-20190412183630-56d357773e84/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20180224232135-f6cff0780e54 h1:4qAtdeqGYyXU2CfUvLomEFw0cl5IxNxmEhXL52ODpiU=
-golang.org/x/sys v0.0.0-20180224232135-f6cff0780e54/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=