diff --git a/go.mod b/go.mod
index b17c799..b29cf82 100644
--- a/go.mod
+++ b/go.mod
@@ -5,5 +5,5 @@ go 1.19
 require (
 	github.com/google/go-pkcs11 v0.3.0
 	golang.org/x/crypto v0.16.0
-	golang.org/x/sys v0.15.0
+	golang.org/x/sys v0.21.0
 )
diff --git a/go.sum b/go.sum
index 9c031de..b0ee5a1 100644
--- a/go.sum
+++ b/go.sum
@@ -14,3 +14,5 @@ golang.org/x/sys v0.12.0 h1:CM0HF96J0hcLAwsHPJZjfdNzs0gftsLfgKt57wWHJ0o=
 golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.15.0 h1:h48lPFYpsTvQJZF4EKyI4aLHaev3CxivZmv7yZig9pc=
 golang.org/x/sys v0.15.0/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=