diff --git a/internal/entityfiles/entityfiles.go b/internal/entityfiles/entityfiles.go
index 35b26e30..a43d3ae8 100644
--- a/internal/entityfiles/entityfiles.go
+++ b/internal/entityfiles/entityfiles.go
@@ -9,7 +9,6 @@ import (
 	sv "github.com/OliveTin/OliveTin/internal/stringvariables"
 	log "github.com/sirupsen/logrus"
 	"gopkg.in/yaml.v3"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -57,7 +56,7 @@ func loadEntityFileJson(filename string, entityname string) {
 		"name": entityname,
 	}).Infof("Loading entity file with JSON format")
 
-	jfile, err := ioutil.ReadFile(filename)
+	jfile, err := os.ReadFile(filename)
 
 	if err != nil {
 		log.Errorf("ReadIn: %v", err)
@@ -90,7 +89,7 @@ func loadEntityFileYaml(filename string, entityname string) {
 		"name": entityname,
 	}).Infof("Loading entity file with YAML format")
 
-	yfile, err := ioutil.ReadFile(filename)
+	yfile, err := os.ReadFile(filename)
 
 	if err != nil {
 		log.Errorf("ReadIn: %v", err)
diff --git a/internal/executor/executor.go b/internal/executor/executor.go
index 061a6844..fc1e73dd 100644
--- a/internal/executor/executor.go
+++ b/internal/executor/executor.go
@@ -15,7 +15,6 @@ import (
 	"context"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path"
@@ -495,7 +494,7 @@ func saveLogResults(req *ExecutionRequest, filename string) {
 		}
 
 		filepath := path.Join(dir, filename+".yaml")
-		err = ioutil.WriteFile(filepath, data, 0644)
+		err = os.WriteFile(filepath, data, 0644)
 
 		if err != nil {
 			log.Warnf("%v", err)
@@ -509,7 +508,7 @@ func saveLogOutput(req *ExecutionRequest, filename string) {
 	if dir != "" {
 		data := req.logEntry.Stdout + "\n" + req.logEntry.Stderr
 		filepath := path.Join(dir, filename+".log")
-		err := ioutil.WriteFile(filepath, []byte(data), 0644)
+		err := os.WriteFile(filepath, []byte(data), 0644)
 
 		if err != nil {
 			log.Warnf("%v", err)
diff --git a/internal/httpservers/webuiServer.go b/internal/httpservers/webuiServer.go
index 12faf97c..4f723436 100644
--- a/internal/httpservers/webuiServer.go
+++ b/internal/httpservers/webuiServer.go
@@ -4,7 +4,6 @@ import (
 	"encoding/json"
 	//	cors "github.com/OliveTin/OliveTin/internal/cors"
 	log "github.com/sirupsen/logrus"
-	"io/ioutil"
 	"net/http"
 	"os"
 	"path"
@@ -89,7 +88,7 @@ func generateThemeCss(w http.ResponseWriter, r *http.Request) {
 		customThemeCssRead = true
 
 		if _, err := os.Stat(themeCssFilename); err == nil {
-			customThemeCss, err = ioutil.ReadFile(themeCssFilename)
+			customThemeCss, err = os.ReadFile(themeCssFilename)
 		} else {
 			log.Debugf("Theme CSS not read: %v", err)
 			customThemeCss = []byte("/* not found */")
diff --git a/internal/oncalendarfile/calendar.go b/internal/oncalendarfile/calendar.go
index 37ce466f..ca38757d 100644
--- a/internal/oncalendarfile/calendar.go
+++ b/internal/oncalendarfile/calendar.go
@@ -8,7 +8,7 @@ import (
 	"github.com/OliveTin/OliveTin/internal/filehelper"
 	log "github.com/sirupsen/logrus"
 	"gopkg.in/yaml.v3"
-	"io/ioutil"
+	"os"
 	"time"
 )
 
@@ -38,7 +38,7 @@ func parseCalendarFile(action *config.Action, cfg *config.Config, ex *executor.E
 		"filename":    filename,
 	}).Infof("Parsing calendar file")
 
-	yfile, err := ioutil.ReadFile(action.ExecOnCalendarFile)
+	yfile, err := os.ReadFile(action.ExecOnCalendarFile)
 
 	if err != nil {
 		log.Errorf("ReadIn: %v", err)
diff --git a/internal/updatecheck/updateCheck.go b/internal/updatecheck/updateCheck.go
index 0da3a1e4..1968b68b 100644
--- a/internal/updatecheck/updateCheck.go
+++ b/internal/updatecheck/updateCheck.go
@@ -8,7 +8,7 @@ import (
 	"github.com/google/uuid"
 	"github.com/robfig/cron/v3"
 	log "github.com/sirupsen/logrus"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"os"
 )
@@ -30,7 +30,7 @@ var CurrentVersion = "?"
 
 func installationID(filename string) string {
 	var content string
-	contentBytes, err := ioutil.ReadFile(filename)
+	contentBytes, err := os.ReadFile(filename)
 
 	if err != nil {
 		fileHandle, err := os.OpenFile(filename, os.O_APPEND|os.O_CREATE|os.O_RDWR, 0644)
@@ -113,7 +113,7 @@ func doRequest(jsonUpdateRequest []byte) string {
 		return ""
 	}
 
-	newVersion, _ := ioutil.ReadAll(resp.Body)
+	newVersion, _ := io.ReadAll(resp.Body)
 
 	defer resp.Body.Close()