diff --git a/go.mod b/go.mod
index 01faec288..df006a4ad 100644
--- a/go.mod
+++ b/go.mod
@@ -89,6 +89,7 @@ require (
 	github.com/vulcand/oxy v1.0.0
 	github.com/vulcand/predicate v1.1.0
 	golang.org/x/net v0.0.0-20190724013045-ca1201d0de80
+	golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a // indirect
 	golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7 // indirect
 	google.golang.org/grpc v1.22.1
 	gopkg.in/DataDog/dd-trace-go.v1 v1.16.1
diff --git a/go.sum b/go.sum
index 751672423..798068511 100644
--- a/go.sum
+++ b/go.sum
@@ -555,6 +555,8 @@ golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190507160741-ecd444e8653b h1:ag/x1USPSsqHud38I9BAC88qdNLDHHtQ4mlgQIZPPNA=
 golang.org/x/sys v0.0.0-20190507160741-ecd444e8653b/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a h1:aYOabOQFp6Vj6W1F80affTUvO9UxmJRx8K0gsfABByQ=
+golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20181227161524-e6919f6577db/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=