diff --git a/pkg/bootstrapinplace/bootstrapinplace.go b/pkg/bootstrapinplace/bootstrapinplace.go
index 04db13c25..2031d4320 100644
--- a/pkg/bootstrapinplace/bootstrapinplace.go
+++ b/pkg/bootstrapinplace/bootstrapinplace.go
@@ -4,7 +4,7 @@ package bootstrapinplace
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"os"
 
 	"github.com/coreos/butane/config"
@@ -44,7 +44,7 @@ func (i *BootstrapInPlaceCommand) Create() error {
 	}
 	defer infile.Close()
 
-	dataIn, err := ioutil.ReadAll(infile)
+	dataIn, err := io.ReadAll(infile)
 	if err != nil {
 		fail("Error occurred while trying to read %s: %v\n", infile.Name(), err)
 	}
diff --git a/pkg/start/asset.go b/pkg/start/asset.go
index 991392ff3..30044b176 100644
--- a/pkg/start/asset.go
+++ b/pkg/start/asset.go
@@ -2,8 +2,9 @@ package start
 
 import (
 	"fmt"
+	"os"
+
 	"github.com/openshift/installer/pkg/types"
-	"io/ioutil"
 	v1 "k8s.io/api/core/v1"
 	"sigs.k8s.io/yaml"
 )
@@ -21,7 +22,7 @@ var (
 )
 
 func getInstallConfig(file string) (*types.InstallConfig, error) {
-	data, err := ioutil.ReadFile(file)
+	data, err := os.ReadFile(file)
 	if err != nil {
 		return nil, err
 	}
diff --git a/pkg/start/bootstrap_test.go b/pkg/start/bootstrap_test.go
index e6380155e..3dccd7dfa 100644
--- a/pkg/start/bootstrap_test.go
+++ b/pkg/start/bootstrap_test.go
@@ -2,7 +2,6 @@ package start
 
 import (
 	"fmt"
-	"io/ioutil"
 	"math/rand"
 	"net/http"
 	"net/http/httptest"
@@ -32,15 +31,15 @@ func createTestServer() (*httptest.Server, string) {
 func setUp(t *testing.T) (assetDir, podManifestPath string) {
 	// Create source directories.
 	var err error
-	assetDir, err = ioutil.TempDir("", "assets")
+	assetDir, err = os.MkdirTemp("", "assets")
 	if err != nil {
 		t.Fatal(err)
 	}
-	podManifestPath, err = ioutil.TempDir("", "manifests")
+	podManifestPath, err = os.MkdirTemp("", "manifests")
 	if err != nil {
 		t.Fatal(err)
 	}
-	bootstrapSecretsDir, err = ioutil.TempDir("", "bootstrap-secrets")
+	bootstrapSecretsDir, err = os.MkdirTemp("", "bootstrap-secrets")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -49,14 +48,14 @@ func setUp(t *testing.T) (assetDir, podManifestPath string) {
 	if err := os.Mkdir(filepath.Join(assetDir, filepath.Dir(assetPathAdminKubeConfig)), os.FileMode(0755)); err != nil {
 		t.Fatal(err)
 	}
-	if err := ioutil.WriteFile(filepath.Join(assetDir, assetPathAdminKubeConfig), []byte("kubeconfig data"), os.FileMode(0644)); err != nil {
+	if err := os.WriteFile(filepath.Join(assetDir, assetPathAdminKubeConfig), []byte("kubeconfig data"), os.FileMode(0644)); err != nil {
 		t.Fatal(err)
 	}
 	if err := os.Mkdir(filepath.Join(assetDir, assetPathSecrets), os.FileMode(0755)); err != nil {
 		t.Fatal(err)
 	}
 	for _, secret := range secrets {
-		if err := ioutil.WriteFile(filepath.Join(assetDir, assetPathSecrets, secret), []byte("secret data"), os.FileMode(0644)); err != nil {
+		if err := os.WriteFile(filepath.Join(assetDir, assetPathSecrets, secret), []byte("secret data"), os.FileMode(0644)); err != nil {
 			t.Fatal(err)
 		}
 	}
@@ -64,7 +63,7 @@ func setUp(t *testing.T) (assetDir, podManifestPath string) {
 		t.Fatal(err)
 	}
 	for _, manifest := range manifests {
-		if err := ioutil.WriteFile(filepath.Join(assetDir, assetPathBootstrapManifests, manifest), []byte("manifest data"), os.FileMode(0644)); err != nil {
+		if err := os.WriteFile(filepath.Join(assetDir, assetPathBootstrapManifests, manifest), []byte("manifest data"), os.FileMode(0644)); err != nil {
 			t.Fatal(err)
 		}
 	}
@@ -131,7 +130,7 @@ func TestBootstrapControlPlaneNoOverwrite(t *testing.T) {
 	existingData := []byte("existing data")
 
 	// Create a manifest in the destination already.
-	if err := ioutil.WriteFile(filepath.Join(podManifestPath, existingManifest), existingData, os.FileMode(0644)); err != nil {
+	if err := os.WriteFile(filepath.Join(podManifestPath, existingManifest), existingData, os.FileMode(0644)); err != nil {
 		t.Fatal(err)
 	}
 
@@ -152,7 +151,7 @@ func TestBootstrapControlPlaneNoOverwrite(t *testing.T) {
 			t.Errorf("bcp.Start() failed to copy manifest: %v", manifest)
 		}
 		if manifest == existingManifest {
-			data, err := ioutil.ReadFile(filepath.Join(podManifestPath, manifest))
+			data, err := os.ReadFile(filepath.Join(podManifestPath, manifest))
 			if err != nil {
 				t.Fatal(err)
 			}