diff --git a/staging/src/k8s.io/controller-manager/pkg/leadermigration/config/config.go b/staging/src/k8s.io/controller-manager/pkg/leadermigration/config/config.go
index 460c4ec9d91..fc8cf17141a 100644
--- a/staging/src/k8s.io/controller-manager/pkg/leadermigration/config/config.go
+++ b/staging/src/k8s.io/controller-manager/pkg/leadermigration/config/config.go
@@ -18,7 +18,7 @@ package config
 
 import (
 	"fmt"
-	"io/ioutil"
+	"os"
 
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/serializer"
@@ -59,7 +59,7 @@ func init() {
 // The parsed LeaderMigrationConfiguration may be invalid.
 // It returns an error if the file did not exist.
 func ReadLeaderMigrationConfiguration(configFilePath string) (*internal.LeaderMigrationConfiguration, error) {
-	data, err := ioutil.ReadFile(configFilePath)
+	data, err := os.ReadFile(configFilePath)
 	if err != nil {
 		return nil, fmt.Errorf("unable to read leader migration configuration from %q: %w", configFilePath, err)
 	}
diff --git a/staging/src/k8s.io/controller-manager/pkg/leadermigration/config/config_test.go b/staging/src/k8s.io/controller-manager/pkg/leadermigration/config/config_test.go
index 076d9fdac29..07b3c430478 100644
--- a/staging/src/k8s.io/controller-manager/pkg/leadermigration/config/config_test.go
+++ b/staging/src/k8s.io/controller-manager/pkg/leadermigration/config/config_test.go
@@ -17,7 +17,6 @@ limitations under the License.
 package config
 
 import (
-	"io/ioutil"
 	"os"
 	"reflect"
 	"testing"
@@ -114,12 +113,12 @@ controllerLeaders:
 
 	for _, tc := range testCases {
 		t.Run(tc.name, func(t *testing.T) {
-			configFile, err := ioutil.TempFile("", tc.name)
+			configFile, err := os.CreateTemp("", tc.name)
 			if err != nil {
 				t.Fatal(err)
 			}
 			defer os.Remove(configFile.Name())
-			err = ioutil.WriteFile(configFile.Name(), []byte(tc.content), os.FileMode(0755))
+			err = os.WriteFile(configFile.Name(), []byte(tc.content), os.FileMode(0755))
 			if err != nil {
 				t.Fatal(err)
 			}
diff --git a/staging/src/k8s.io/controller-manager/pkg/leadermigration/options/options_test.go b/staging/src/k8s.io/controller-manager/pkg/leadermigration/options/options_test.go
index 05c58e98c53..f78be12adc8 100644
--- a/staging/src/k8s.io/controller-manager/pkg/leadermigration/options/options_test.go
+++ b/staging/src/k8s.io/controller-manager/pkg/leadermigration/options/options_test.go
@@ -17,7 +17,6 @@ limitations under the License.
 package options
 
 import (
-	"io/ioutil"
 	"os"
 	"reflect"
 	"testing"
@@ -185,12 +184,12 @@ controllerLeaders:
 		t.Run(tc.name, func(t *testing.T) {
 			flags := tc.flags
 			if tc.configContent != "" {
-				configFile, err := ioutil.TempFile("", tc.name)
+				configFile, err := os.CreateTemp("", tc.name)
 				if err != nil {
 					t.Fatal(err)
 				}
 				defer os.Remove(configFile.Name())
-				err = ioutil.WriteFile(configFile.Name(), []byte(tc.configContent), os.FileMode(0755))
+				err = os.WriteFile(configFile.Name(), []byte(tc.configContent), os.FileMode(0755))
 				if err != nil {
 					t.Fatal(err)
 				}