diff --git a/go.mod b/go.mod
index 605c4c2..c9a20b7 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,4 @@ module github.com/mattn/go-isatty
 
 go 1.12
 
-require golang.org/x/sys v0.0.0-20200116001909-b77594299b42
+require golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c