diff --git a/go.mod b/go.mod
index 872ca84..c5f118c 100644
--- a/go.mod
+++ b/go.mod
@@ -4,5 +4,5 @@ go 1.17
 
 require (
 	github.com/tuxdude/zzzlogi v0.1.0
-	golang.org/x/sys v0.20.0
+	golang.org/x/sys v0.21.0
 )
diff --git a/go.sum b/go.sum
index 4eea809..2c32a2e 100644
--- a/go.sum
+++ b/go.sum
@@ -1,4 +1,4 @@
 github.com/tuxdude/zzzlogi v0.1.0 h1:a7JrdqFcH3BTFxQaM6xOBYd+iI/oq3p/xOzCXnAjprM=
 github.com/tuxdude/zzzlogi v0.1.0/go.mod h1:pDoI7GNJZuYLZtVx4WL7lOQuECECY+XCHF6Sbv7YvzY=
-golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y=
-golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.21.0 h1:rF+pYz3DAGSQAxAu1CbC7catZg4ebC4UIeIhKxBZvws=
+golang.org/x/sys v0.21.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=