diff --git a/kem/mkem/go.mod b/kem/mkem/go.mod
index 67155f5..621f726 100644
--- a/kem/mkem/go.mod
+++ b/kem/mkem/go.mod
@@ -5,5 +5,5 @@ go 1.12
 require (
 	github.com/dterei/gotsc v0.0.0-20160722215413-e78f872945c6
 	github.com/henrydcase/nobs v0.0.0-20200516223741-2500d74484f2
-	golang.org/x/sys v0.0.0-20191120155948-bd437916bb0e
+	golang.org/x/sys v0.1.0 // indirect
 )