ns.go      | 2 +-
 ns_test.go | 6 +++---

diff --git a/ns.go b/ns.go
index 5ead0ec2bd74d4c583146190425afcd6ae86d629c447ce12f378645c0dd7be24..310386756484a1b03451ec83d60b5090b4bbf3241841ac45ec3c5e0376921991 100644
--- a/ns.go
+++ b/ns.go
@@ -31,5 +31,5 @@ //   r := netstring.NewReader(&b)
 //   size, err := r.Next()         // size is 5
 //   r.Discard()                   // skip that chunk
 //   size, err = r.Next()          // size is 6
-//   data, _ := ioutil.ReadAll(r)  // data contains "world!"
+//   data, _ := io.ReadAll(r)  // data contains "world!"
 package netstring
diff --git a/ns_test.go b/ns_test.go
index 7adafba1bbe57b943df50f87e76ebf8c427025048c6ff2fc216b68f10c3460b4..9eb164714b2efdbb1984680a2fc9dea987a007a24a18202010e76362806a181a 100644
--- a/ns_test.go
+++ b/ns_test.go
@@ -19,7 +19,7 @@ package netstring
 
 import (
 	"bytes"
-	"io/ioutil"
+	"io"
 	"testing"
 	"testing/quick"
 )
@@ -72,7 +72,7 @@ 		for _, data := range datum {
 			if n, err := r.Next(); err != nil || n != uint64(len(data)) {
 				return false
 			}
-			got, err := ioutil.ReadAll(r)
+			got, err := io.ReadAll(r)
 			if err != nil || bytes.Compare(got, data) != 0 {
 				return false
 			}
@@ -158,7 +158,7 @@ 	}
 	if size, err := r.Next(); err != nil || size != 6 {
 		t.FailNow()
 	}
-	if data, err := ioutil.ReadAll(r); err != nil || string(data) != "world!" {
+	if data, err := io.ReadAll(r); err != nil || string(data) != "world!" {
 		t.FailNow()
 	}
 }