diff --git a/doc/articles/wiki/wiki_test.go b/doc/articles/wiki/wiki_test.go
index 1d976fd77e5cd5..9c588fdf1e0f27 100644
--- a/doc/articles/wiki/wiki_test.go
+++ b/doc/articles/wiki/wiki_test.go
@@ -7,6 +7,7 @@ package main_test
 import (
 	"bytes"
 	"fmt"
+	"io"
 	"io/ioutil"
 	"net/http"
 	"os"
@@ -141,7 +142,7 @@ func responseMustMatchFile(t *testing.T, r *http.Response, filename string) {
 	t.Helper()
 
 	defer r.Body.Close()
-	body, err := ioutil.ReadAll(r.Body)
+	body, err := io.ReadAll(r.Body)
 	if err != nil {
 		t.Fatal(err)
 	}
diff --git a/misc/android/go_android_exec.go b/misc/android/go_android_exec.go
index 7aa7fe56fc5e04..35b160fc9f0b04 100644
--- a/misc/android/go_android_exec.go
+++ b/misc/android/go_android_exec.go
@@ -276,7 +276,7 @@ func adbCopyGoroot() error {
 	if err := syscall.Flock(int(stat.Fd()), syscall.LOCK_EX); err != nil {
 		return err
 	}
-	s, err := ioutil.ReadAll(stat)
+	s, err := io.ReadAll(stat)
 	if err != nil {
 		return err
 	}
diff --git a/misc/linkcheck/linkcheck.go b/misc/linkcheck/linkcheck.go
index d9bfd2f767eb19..570b430da4f1cb 100644
--- a/misc/linkcheck/linkcheck.go
+++ b/misc/linkcheck/linkcheck.go
@@ -11,7 +11,7 @@ import (
 	"errors"
 	"flag"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 	"os"
@@ -144,7 +144,7 @@ func doCrawl(url string) error {
 	if res.StatusCode != 200 {
 		return errors.New(res.Status)
 	}
-	slurp, err := ioutil.ReadAll(res.Body)
+	slurp, err := io.ReadAll(res.Body)
 	res.Body.Close()
 	if err != nil {
 		log.Fatalf("Error reading %s body: %v", url, err)
diff --git a/src/net/http/fs_test.go b/src/net/http/fs_test.go
index 2e4751114de15e..45018e5d3b3083 100644
--- a/src/net/http/fs_test.go
+++ b/src/net/http/fs_test.go
@@ -593,7 +593,7 @@ func TestServeIndexHtml(t *testing.T) {
 				if err != nil {
 					t.Fatal(err)
 				}
-				b, err := ioutil.ReadAll(res.Body)
+				b, err := io.ReadAll(res.Body)
 				if err != nil {
 					t.Fatal("reading Body:", err)
 				}
diff --git a/src/testing/fstest/testfs.go b/src/testing/fstest/testfs.go
index 4912a271b26adc..60be802d527bf7 100644
--- a/src/testing/fstest/testfs.go
+++ b/src/testing/fstest/testfs.go
@@ -10,7 +10,6 @@ import (
 	"fmt"
 	"io"
 	"io/fs"
-	"io/ioutil"
 	"path"
 	"reflect"
 	"sort"
@@ -460,7 +459,7 @@ func (t *fsTester) checkFile(file string) {
 		return
 	}
 
-	data, err := ioutil.ReadAll(f)
+	data, err := io.ReadAll(f)
 	if err != nil {
 		f.Close()
 		t.errorf("%s: Open+ReadAll: %v", file, err)