diff --git a/staging/src/k8s.io/apimachinery/pkg/util/framer/framer_test.go b/staging/src/k8s.io/apimachinery/pkg/util/framer/framer_test.go
index b7ed00f5383..5a1fca2cc88 100644
--- a/staging/src/k8s.io/apimachinery/pkg/util/framer/framer_test.go
+++ b/staging/src/k8s.io/apimachinery/pkg/util/framer/framer_test.go
@@ -19,7 +19,6 @@ package framer
 import (
 	"bytes"
 	"io"
-	"io/ioutil"
 	"testing"
 )
 
@@ -34,7 +33,7 @@ func TestRead(t *testing.T) {
 		0x08,
 	}
 	b := bytes.NewBuffer(data)
-	r := NewLengthDelimitedFrameReader(ioutil.NopCloser(b))
+	r := NewLengthDelimitedFrameReader(io.NopCloser(b))
 	buf := make([]byte, 1)
 	if n, err := r.Read(buf); err != io.ErrShortBuffer && n != 1 && bytes.Equal(buf, []byte{0x01}) {
 		t.Fatalf("unexpected: %v %d %v", err, n, buf)
@@ -79,7 +78,7 @@ func TestReadLarge(t *testing.T) {
 		0x08,
 	}
 	b := bytes.NewBuffer(data)
-	r := NewLengthDelimitedFrameReader(ioutil.NopCloser(b))
+	r := NewLengthDelimitedFrameReader(io.NopCloser(b))
 	buf := make([]byte, 40)
 	if n, err := r.Read(buf); err != nil && n != 4 && bytes.Equal(buf, []byte{0x01, 0x02, 0x03, 0x04}) {
 		t.Fatalf("unexpected: %v %d %v", err, n, buf)
@@ -104,7 +103,7 @@ func TestReadInvalidFrame(t *testing.T) {
 		0x01, 0x02,
 	}
 	b := bytes.NewBuffer(data)
-	r := NewLengthDelimitedFrameReader(ioutil.NopCloser(b))
+	r := NewLengthDelimitedFrameReader(io.NopCloser(b))
 	buf := make([]byte, 1)
 	if n, err := r.Read(buf); err != io.ErrShortBuffer && n != 1 && bytes.Equal(buf, []byte{0x01}) {
 		t.Fatalf("unexpected: %v %d %v", err, n, buf)
@@ -122,7 +121,7 @@ func TestReadInvalidFrame(t *testing.T) {
 
 func TestJSONFrameReader(t *testing.T) {
 	b := bytes.NewBufferString("{\"test\":true}\n1\n[\"a\"]")
-	r := NewJSONFramedReader(ioutil.NopCloser(b))
+	r := NewJSONFramedReader(io.NopCloser(b))
 	buf := make([]byte, 20)
 	if n, err := r.Read(buf); err != nil || n != 13 || string(buf[:n]) != `{"test":true}` {
 		t.Fatalf("unexpected: %v %d %q", err, n, buf)
@@ -140,7 +139,7 @@ func TestJSONFrameReader(t *testing.T) {
 
 func TestJSONFrameReaderShortBuffer(t *testing.T) {
 	b := bytes.NewBufferString("{\"test\":true}\n1\n[\"a\"]")
-	r := NewJSONFramedReader(ioutil.NopCloser(b))
+	r := NewJSONFramedReader(io.NopCloser(b))
 	buf := make([]byte, 3)
 
 	if n, err := r.Read(buf); err != io.ErrShortBuffer || n != 3 || string(buf[:n]) != `{"t` {
diff --git a/staging/src/k8s.io/apimachinery/pkg/util/httpstream/spdy/roundtripper.go b/staging/src/k8s.io/apimachinery/pkg/util/httpstream/spdy/roundtripper.go
index 27c3d2d5645..7fe52ee568e 100644
--- a/staging/src/k8s.io/apimachinery/pkg/util/httpstream/spdy/roundtripper.go
+++ b/staging/src/k8s.io/apimachinery/pkg/util/httpstream/spdy/roundtripper.go
@@ -23,7 +23,7 @@ import (
 	"encoding/base64"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net"
 	"net/http"
 	"net/http/httputil"
@@ -337,7 +337,7 @@ func (s *SpdyRoundTripper) NewConnection(resp *http.Response) (httpstream.Connec
 	if (resp.StatusCode != http.StatusSwitchingProtocols) || !strings.Contains(connectionHeader, strings.ToLower(httpstream.HeaderUpgrade)) || !strings.Contains(upgradeHeader, strings.ToLower(HeaderSpdy31)) {
 		defer resp.Body.Close()
 		responseError := ""
-		responseErrorBytes, err := ioutil.ReadAll(resp.Body)
+		responseErrorBytes, err := io.ReadAll(resp.Body)
 		if err != nil {
 			responseError = "unable to read error from server response"
 		} else {
diff --git a/staging/src/k8s.io/apimachinery/pkg/util/managedfields/fieldmanager_test.go b/staging/src/k8s.io/apimachinery/pkg/util/managedfields/fieldmanager_test.go
index b821daa0e6d..26a12ca010a 100644
--- a/staging/src/k8s.io/apimachinery/pkg/util/managedfields/fieldmanager_test.go
+++ b/staging/src/k8s.io/apimachinery/pkg/util/managedfields/fieldmanager_test.go
@@ -19,8 +19,8 @@ package managedfields_test
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"net/http"
+	"os"
 	"path/filepath"
 	"reflect"
 	"strings"
@@ -42,7 +42,7 @@ import (
 )
 
 var fakeTypeConverter = func() managedfields.TypeConverter {
-	data, err := ioutil.ReadFile(filepath.Join(strings.Repeat(".."+string(filepath.Separator), 7),
+	data, err := os.ReadFile(filepath.Join(strings.Repeat(".."+string(filepath.Separator), 7),
 		"api", "openapi-spec", "swagger.json"))
 	if err != nil {
 		panic(err)
@@ -264,7 +264,7 @@ func TestApplyDoesNotStripLabels(t *testing.T) {
 }
 
 func getObjectBytes(file string) []byte {
-	s, err := ioutil.ReadFile(file)
+	s, err := os.ReadFile(file)
 	if err != nil {
 		panic(err)
 	}
diff --git a/staging/src/k8s.io/apimachinery/pkg/util/managedfields/internal/fieldmanager_test.go b/staging/src/k8s.io/apimachinery/pkg/util/managedfields/internal/fieldmanager_test.go
index 096b0f93a8a..1ae01dab6e9 100644
--- a/staging/src/k8s.io/apimachinery/pkg/util/managedfields/internal/fieldmanager_test.go
+++ b/staging/src/k8s.io/apimachinery/pkg/util/managedfields/internal/fieldmanager_test.go
@@ -18,7 +18,7 @@ package internal_test
 
 import (
 	"encoding/json"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"strings"
 
@@ -27,7 +27,7 @@ import (
 )
 
 var fakeTypeConverter = func() internal.TypeConverter {
-	data, err := ioutil.ReadFile(filepath.Join(
+	data, err := os.ReadFile(filepath.Join(
 		strings.Repeat(".."+string(filepath.Separator), 8),
 		"api", "openapi-spec", "swagger.json"))
 	if err != nil {
diff --git a/staging/src/k8s.io/apimachinery/pkg/util/managedfields/internal/versionconverter_test.go b/staging/src/k8s.io/apimachinery/pkg/util/managedfields/internal/versionconverter_test.go
index 32f8edb34e9..504a33c8ea6 100644
--- a/staging/src/k8s.io/apimachinery/pkg/util/managedfields/internal/versionconverter_test.go
+++ b/staging/src/k8s.io/apimachinery/pkg/util/managedfields/internal/versionconverter_test.go
@@ -19,7 +19,7 @@ package internal
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"reflect"
 	"testing"
@@ -32,7 +32,7 @@ import (
 )
 
 var testTypeConverter = func() TypeConverter {
-	data, err := ioutil.ReadFile(filepath.Join("testdata", "swagger.json"))
+	data, err := os.ReadFile(filepath.Join("testdata", "swagger.json"))
 	if err != nil {
 		panic(err)
 	}
diff --git a/staging/src/k8s.io/apimachinery/pkg/util/net/interface_test.go b/staging/src/k8s.io/apimachinery/pkg/util/net/interface_test.go
index c4d543cda0a..77ff70a19c5 100644
--- a/staging/src/k8s.io/apimachinery/pkg/util/net/interface_test.go
+++ b/staging/src/k8s.io/apimachinery/pkg/util/net/interface_test.go
@@ -18,7 +18,6 @@ package net
 
 import (
 	"fmt"
-	"io/ioutil"
 	"net"
 	"os"
 	"strings"
@@ -700,7 +699,7 @@ func TestGetIPFromHostInterfaces(t *testing.T) {
 }
 
 func makeRouteFile(content string, t *testing.T) (*os.File, error) {
-	routeFile, err := ioutil.TempFile("", "route")
+	routeFile, err := os.CreateTemp("", "route")
 	if err != nil {
 		return nil, err
 	}
diff --git a/staging/src/k8s.io/apimachinery/pkg/util/proxy/transport.go b/staging/src/k8s.io/apimachinery/pkg/util/proxy/transport.go
index 489d9b04264..5a2dd6e14c8 100644
--- a/staging/src/k8s.io/apimachinery/pkg/util/proxy/transport.go
+++ b/staging/src/k8s.io/apimachinery/pkg/util/proxy/transport.go
@@ -22,7 +22,6 @@ import (
 	"compress/gzip"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"net/url"
 	"path"
@@ -263,7 +262,7 @@ func (t *Transport) rewriteResponse(req *http.Request, resp *http.Response) (*ht
 		return resp, err
 	}
 
-	resp.Body = ioutil.NopCloser(newContent)
+	resp.Body = io.NopCloser(newContent)
 	// Update header node with new content-length
 	// TODO: Remove any hash/signature headers here?
 	resp.Header.Del("Content-Length")
diff --git a/staging/src/k8s.io/apimachinery/pkg/util/proxy/transport_test.go b/staging/src/k8s.io/apimachinery/pkg/util/proxy/transport_test.go
index 94c4b2e0144..e6c7dcd29ff 100644
--- a/staging/src/k8s.io/apimachinery/pkg/util/proxy/transport_test.go
+++ b/staging/src/k8s.io/apimachinery/pkg/util/proxy/transport_test.go
@@ -21,7 +21,7 @@ import (
 	"compress/flate"
 	"compress/gzip"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"net/url"
@@ -300,7 +300,7 @@ func TestProxyTransport(t *testing.T) {
 			}
 			return
 		}
-		body, err := ioutil.ReadAll(resp.Body)
+		body, err := io.ReadAll(resp.Body)
 		if err != nil {
 			t.Errorf("%v: Unexpected error: %v", name, err)
 			return
@@ -342,12 +342,12 @@ func TestRewriteResponse(t *testing.T) {
 				gzw.Write([]byte(ept))
 				gzw.Flush()
 				return &http.Response{
-					Body: ioutil.NopCloser(gzipbuf),
+					Body: io.NopCloser(gzipbuf),
 				}
 			},
 			reader: func(rep *http.Response) string {
 				reader, _ := gzip.NewReader(rep.Body)
-				s, _ := ioutil.ReadAll(reader)
+				s, _ := io.ReadAll(reader)
 				return string(s)
 			},
 		},
@@ -360,12 +360,12 @@ func TestRewriteResponse(t *testing.T) {
 				flw.Write([]byte(ept))
 				flw.Flush()
 				return &http.Response{
-					Body: ioutil.NopCloser(flatebuf),
+					Body: io.NopCloser(flatebuf),
 				}
 			},
 			reader: func(rep *http.Response) string {
 				reader := flate.NewReader(rep.Body)
-				s, _ := ioutil.ReadAll(reader)
+				s, _ := io.ReadAll(reader)
 				return string(s)
 			},
 		},
diff --git a/staging/src/k8s.io/apimachinery/pkg/util/proxy/upgradeaware.go b/staging/src/k8s.io/apimachinery/pkg/util/proxy/upgradeaware.go
index a5bb5857580..ac2ada5472c 100644
--- a/staging/src/k8s.io/apimachinery/pkg/util/proxy/upgradeaware.go
+++ b/staging/src/k8s.io/apimachinery/pkg/util/proxy/upgradeaware.go
@@ -21,7 +21,6 @@ import (
 	"bytes"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"log"
 	"net"
 	"net/http"
@@ -148,7 +147,7 @@ func (onewayRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
 	return &http.Response{
 		Status:     "200 OK",
 		StatusCode: http.StatusOK,
-		Body:       ioutil.NopCloser(&bytes.Buffer{}),
+		Body:       io.NopCloser(&bytes.Buffer{}),
 		Request:    req,
 	}, nil
 }
diff --git a/staging/src/k8s.io/apimachinery/pkg/util/proxy/upgradeaware_test.go b/staging/src/k8s.io/apimachinery/pkg/util/proxy/upgradeaware_test.go
index f4b98610e3d..e4ea0ef17b8 100644
--- a/staging/src/k8s.io/apimachinery/pkg/util/proxy/upgradeaware_test.go
+++ b/staging/src/k8s.io/apimachinery/pkg/util/proxy/upgradeaware_test.go
@@ -26,7 +26,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net"
 	"net/http"
 	"net/http/httptest"
@@ -100,7 +99,7 @@ func (s *SimpleBackendHandler) ServeHTTP(w http.ResponseWriter, req *http.Reques
 	s.requestHeader = req.Header
 	s.requestMethod = req.Method
 	var err error
-	s.requestBody, err = ioutil.ReadAll(req.Body)
+	s.requestBody, err = io.ReadAll(req.Body)
 	if err != nil {
 		s.t.Errorf("Unexpected error: %v", err)
 		return
@@ -370,7 +369,7 @@ func TestServeHTTP(t *testing.T) {
 			validateHeaders(t, test.name+" backend headers", res.Header, test.expectedRespHeader, test.notExpectedRespHeader)
 
 			// Validate Body
-			responseBody, err := ioutil.ReadAll(res.Body)
+			responseBody, err := io.ReadAll(res.Body)
 			if err != nil {
 				t.Errorf("Unexpected error reading response body: %v", err)
 			}
@@ -601,7 +600,7 @@ func TestProxyUpgradeConnectionErrorResponse(t *testing.T) {
 	// Expect error response.
 	assert.True(t, responder.called)
 	assert.Equal(t, fakeStatusCode, resp.StatusCode)
-	msg, err := ioutil.ReadAll(resp.Body)
+	msg, err := io.ReadAll(resp.Body)
 	require.NoError(t, err)
 	assert.Contains(t, string(msg), expectedErr.Error())
 }
@@ -640,7 +639,7 @@ func TestProxyUpgradeErrorResponseTerminates(t *testing.T) {
 			// Verify we get the correct response and full message body content
 			resp, err := http.ReadResponse(bufferedReader, nil)
 			require.NoError(t, err)
-			data, err := ioutil.ReadAll(resp.Body)
+			data, err := io.ReadAll(resp.Body)
 			require.NoError(t, err)
 			require.Equal(t, resp.StatusCode, code)
 			require.Equal(t, data, []byte(`some data`))
@@ -790,7 +789,7 @@ func TestRejectForwardingRedirectsOption(t *testing.T) {
 			resp, err := http.ReadResponse(bufferedReader, nil)
 			require.NoError(t, err)
 			assert.Equal(t, tc.expectStatusCode, resp.StatusCode)
-			data, err := ioutil.ReadAll(resp.Body)
+			data, err := io.ReadAll(resp.Body)
 			require.NoError(t, err)
 			assert.Equal(t, tc.expectBody, data)
 			assert.Equal(t, int64(len(tc.expectBody)), resp.ContentLength)
@@ -976,7 +975,7 @@ func TestProxyRequestContentLengthAndTransferEncoding(t *testing.T) {
 			}
 
 			// Read body
-			body, err := ioutil.ReadAll(req.Body)
+			body, err := io.ReadAll(req.Body)
 			if err != nil {
 				t.Errorf("%s: unexpected error %v", k, err)
 			}
@@ -1039,7 +1038,7 @@ func TestProxyRequestContentLengthAndTransferEncoding(t *testing.T) {
 		}
 
 		// Read response
-		response, err := ioutil.ReadAll(conn)
+		response, err := io.ReadAll(conn)
 		if err != nil {
 			t.Errorf("%s: unexpected error %v", k, err)
 			continue
diff --git a/staging/src/k8s.io/apimachinery/pkg/util/strategicpatch/testing/openapi.go b/staging/src/k8s.io/apimachinery/pkg/util/strategicpatch/testing/openapi.go
index be7aa074bf2..971614975f5 100644
--- a/staging/src/k8s.io/apimachinery/pkg/util/strategicpatch/testing/openapi.go
+++ b/staging/src/k8s.io/apimachinery/pkg/util/strategicpatch/testing/openapi.go
@@ -17,7 +17,6 @@ limitations under the License.
 package testing
 
 import (
-	"io/ioutil"
 	"os"
 	"sync"
 
@@ -43,7 +42,7 @@ func (f *Fake) OpenAPISchema() (*openapi_v2.Document, error) {
 			f.err = err
 			return
 		}
-		spec, err := ioutil.ReadFile(f.Path)
+		spec, err := os.ReadFile(f.Path)
 		if err != nil {
 			f.err = err
 			return
diff --git a/staging/src/k8s.io/apimachinery/pkg/util/yaml/decoder_test.go b/staging/src/k8s.io/apimachinery/pkg/util/yaml/decoder_test.go
index 45e6c034ed9..844d7ff5b5e 100644
--- a/staging/src/k8s.io/apimachinery/pkg/util/yaml/decoder_test.go
+++ b/staging/src/k8s.io/apimachinery/pkg/util/yaml/decoder_test.go
@@ -22,7 +22,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"math/rand"
 	"reflect"
 	"strings"
@@ -45,7 +44,7 @@ stuff: 1
 	}
 
 	for i, testCase := range testCases {
-		r := NewDocumentDecoder(ioutil.NopCloser(bytes.NewReader([]byte(d))))
+		r := NewDocumentDecoder(io.NopCloser(bytes.NewReader([]byte(d))))
 		b := make([]byte, testCase.bufLen)
 		n, err := r.Read(b)
 		if err != testCase.expectErr || n != testCase.expectLen {
@@ -62,7 +61,7 @@ stuff: 1
 	bufferLen := 4 * 1024
 	//  maxLen 5 M
 	dd := strings.Repeat(d, 512*1024)
-	r := NewDocumentDecoder(ioutil.NopCloser(bytes.NewReader([]byte(dd[:maxLen-1]))))
+	r := NewDocumentDecoder(io.NopCloser(bytes.NewReader([]byte(dd[:maxLen-1]))))
 	b := make([]byte, bufferLen)
 	n, err := r.Read(b)
 	if err != io.ErrShortBuffer {
@@ -73,7 +72,7 @@ stuff: 1
 	if err != nil {
 		t.Fatalf("expected nil: %d / %v", n, err)
 	}
-	r = NewDocumentDecoder(ioutil.NopCloser(bytes.NewReader([]byte(dd))))
+	r = NewDocumentDecoder(io.NopCloser(bytes.NewReader([]byte(dd))))
 	b = make([]byte, maxLen)
 	n, err = r.Read(b)
 	if err != bufio.ErrTooLong {
@@ -85,7 +84,7 @@ func TestYAMLDecoderCallsAfterErrShortBufferRestOfFrame(t *testing.T) {
 	d := `---
 stuff: 1
 	test-foo: 1`
-	r := NewDocumentDecoder(ioutil.NopCloser(bytes.NewReader([]byte(d))))
+	r := NewDocumentDecoder(io.NopCloser(bytes.NewReader([]byte(d))))
 	b := make([]byte, 12)
 	n, err := r.Read(b)
 	if err != io.ErrShortBuffer || n != 12 {