diff --git a/src/internal/app/handler/handler.go b/src/internal/app/handler/handler.go
index 2c0ce4b..b5d192d 100644
--- a/src/internal/app/handler/handler.go
+++ b/src/internal/app/handler/handler.go
@@ -3,7 +3,7 @@ package handler
 import (
 	"bytes"
 	"encoding/json"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 
@@ -55,9 +55,9 @@ func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 }
 
 func decodeRequestData(r *http.Request, v interface{}) error {
-	buf, _ := ioutil.ReadAll(r.Body)
-	rdr := ioutil.NopCloser(bytes.NewReader(buf))
-	r.Body = ioutil.NopCloser(bytes.NewReader(buf))
+	buf, _ := io.ReadAll(r.Body)
+	rdr := io.NopCloser(bytes.NewReader(buf))
+	r.Body = io.NopCloser(bytes.NewReader(buf))
 
 	json.NewDecoder(rdr).Decode(&v)
 
diff --git a/src/internal/app/server.go b/src/internal/app/server.go
index df1fdaf..cff4bc2 100644
--- a/src/internal/app/server.go
+++ b/src/internal/app/server.go
@@ -3,7 +3,7 @@ package app
 import (
 	"bytes"
 	"encoding/json"
-	"io/ioutil"
+	"io"
 	"log"
 	"net"
 	"net/http"
@@ -63,8 +63,8 @@ func PrepareHeadersMiddleware(next http.Handler) http.Handler {
 
 func ValidateJsonBodyMiddleware(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		buf, _ := ioutil.ReadAll(r.Body)
-		r.Body = ioutil.NopCloser(bytes.NewReader(buf)) // rollack *Request to original state
+		buf, _ := io.ReadAll(r.Body)
+		r.Body = io.NopCloser(bytes.NewReader(buf)) // rollack *Request to original state
 
 		if len(buf) > 0 && !json.Valid(buf) {
 			w.WriteHeader(http.StatusBadRequest)