diff --git a/cmd/stringer/endtoend_test.go b/cmd/stringer/endtoend_test.go
index 5b969a52e..268c2f61b 100644
--- a/cmd/stringer/endtoend_test.go
+++ b/cmd/stringer/endtoend_test.go
@@ -14,7 +14,6 @@ import (
 	"fmt"
 	"go/build"
 	"io"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path"
@@ -113,7 +112,7 @@ func TestTags(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	result, err := ioutil.ReadFile(output)
+	result, err := os.ReadFile(output)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -128,7 +127,7 @@ func TestTags(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	result, err = ioutil.ReadFile(output)
+	result, err = os.ReadFile(output)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -184,7 +183,7 @@ func buildStringer(t *testing.T) (dir string, stringer string) {
 	t.Helper()
 	testenv.NeedsTool(t, "go")
 
-	dir, err := ioutil.TempDir("", "stringer")
+	dir, err := os.MkdirTemp("", "stringer")
 	if err != nil {
 		t.Fatal(err)
 	}
diff --git a/cmd/stringer/golden_test.go b/cmd/stringer/golden_test.go
index b29763174..2e2ec58de 100644
--- a/cmd/stringer/golden_test.go
+++ b/cmd/stringer/golden_test.go
@@ -10,7 +10,6 @@
 package main
 
 import (
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -452,7 +451,7 @@ func (i Token) String() string {
 func TestGolden(t *testing.T) {
 	testenv.NeedsTool(t, "go")
 
-	dir, err := ioutil.TempDir("", "stringer")
+	dir, err := os.MkdirTemp("", "stringer")
 	if err != nil {
 		t.Error(err)
 	}
@@ -466,7 +465,7 @@ func TestGolden(t *testing.T) {
 		input := "package test\n" + test.input
 		file := test.name + ".go"
 		absFile := filepath.Join(dir, file)
-		err := ioutil.WriteFile(absFile, []byte(input), 0644)
+		err := os.WriteFile(absFile, []byte(input), 0644)
 		if err != nil {
 			t.Error(err)
 		}
diff --git a/cmd/stringer/stringer.go b/cmd/stringer/stringer.go
index b079985b3..998d1a51b 100644
--- a/cmd/stringer/stringer.go
+++ b/cmd/stringer/stringer.go
@@ -76,7 +76,6 @@ import (
 	"go/format"
 	"go/token"
 	"go/types"
-	"io/ioutil"
 	"log"
 	"os"
 	"path/filepath"
@@ -166,7 +165,7 @@ func main() {
 		baseName := fmt.Sprintf("%s_string.go", types[0])
 		outputName = filepath.Join(dir, strings.ToLower(baseName))
 	}
-	err := ioutil.WriteFile(outputName, src, 0644)
+	err := os.WriteFile(outputName, src, 0644)
 	if err != nil {
 		log.Fatalf("writing output: %s", err)
 	}