diff --git a/timerlist.go b/timerlist.go
index b1abf81..6b321b0 100644
--- a/timerlist.go
+++ b/timerlist.go
@@ -4,7 +4,6 @@ import (
 	"bufio"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"sort"
 	"strings"
@@ -356,7 +355,7 @@ func (timerlist *TimerList) LoadFromFilename(filename string) error {
 
 // WriteToFilename writes a TimerList to the specified file (most likely called "timer.txt").
 func (timerlist *TimerList) WriteToFilename(filename string) error {
-	if err := ioutil.WriteFile(filename, []byte(timerlist.String()), 0640); err != nil {
+	if err := os.WriteFile(filename, []byte(timerlist.String()), 0640); err != nil {
 		return err
 	}
 	timerlist.ResetIds()