diff --git a/cmd/cmd.go b/cmd/cmd.go
index 76fb95d..9eb7d18 100644
--- a/cmd/cmd.go
+++ b/cmd/cmd.go
@@ -15,7 +15,7 @@ package cmd
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"os"
 
 	"github.com/spf13/cobra"
@@ -126,9 +126,9 @@ func addHumanFlag(flags *pflag.FlagSet) {
 // the data is read from stdin.
 func ReadFile(filename string) ([]byte, error) {
 	if filename == "-" {
-		return ioutil.ReadAll(os.Stdin)
+		return io.ReadAll(os.Stdin)
 	}
-	return ioutil.ReadFile(filename)
+	return os.ReadFile(filename)
 }
 
 // NewAPIClient returns a new utils.APIClient.
diff --git a/cmd/monitor.go b/cmd/monitor.go
index d3ff946..2c054d8 100644
--- a/cmd/monitor.go
+++ b/cmd/monitor.go
@@ -16,7 +16,7 @@ package cmd
 import (
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"os"
 	"path"
 	"path/filepath"
@@ -187,7 +187,7 @@ func NewMonitorItemsSetDetailsCmd() *cobra.Command {
 			if len(args) == 0 {
 				return errors.New("No item provided")
 			} else if len(args) == 1 {
-				detailsBytes, err := ioutil.ReadAll(os.Stdin)
+				detailsBytes, err := io.ReadAll(os.Stdin)
 				details = string(detailsBytes)
 				if err != nil {
 					return err
diff --git a/cmd/retrohunt.go b/cmd/retrohunt.go
index 93eef58..cfc6915 100644
--- a/cmd/retrohunt.go
+++ b/cmd/retrohunt.go
@@ -16,7 +16,7 @@ package cmd
 import (
 	"fmt"
 	"github.com/VirusTotal/vt-cli/utils"
-	"io/ioutil"
+	"io"
 	"os"
 	"regexp"
 	"strings"
@@ -165,9 +165,9 @@ func NewRetrohuntStartCmd() *cobra.Command {
 
 			var rules []byte
 			if args[0] == "-" {
-				rules, err = ioutil.ReadAll(os.Stdin)
+				rules, err = io.ReadAll(os.Stdin)
 			} else {
-				rules, err = ioutil.ReadFile(args[0])
+				rules, err = os.ReadFile(args[0])
 			}
 			if err != nil {
 				return err