diff --git a/build/css.go b/build/css.go
index ca31c2c..c58a581 100644
--- a/build/css.go
+++ b/build/css.go
@@ -1,7 +1,6 @@
 package build
 
 import (
-	"io/ioutil"
 	"math/rand"
 	"os"
 	"strings"
@@ -10,7 +9,7 @@ import (
 // Gets file paths from directory recursively.
 func getFilePathsRecursively(dir string) ([]string, error) {
 	var paths []string
-	files, err := ioutil.ReadDir(dir)
+	files, err := os.ReadDir(dir)
 	if err != nil {
 		return nil, err
 	}
@@ -32,7 +31,7 @@ func getFilePathsRecursively(dir string) ([]string, error) {
 // Returns all css files paths in ../static/styles folder.
 func getCssFilesPaths() []string {
 	var paths []string
-	files, err := ioutil.ReadDir("static/styles")
+	files, err := os.ReadDir("static/styles")
 	if err != nil {
 		panic(err)
 	}
@@ -99,7 +98,7 @@ func RenameCss() {
 	}
 
 	for _, htmlTemplatePath := range htmlTemplatePaths {
-		htmlTemplate, err := ioutil.ReadFile(htmlTemplatePath)
+		htmlTemplate, err := os.ReadFile(htmlTemplatePath)
 		if err != nil {
 			panic(err)
 		}
@@ -108,7 +107,7 @@ func RenameCss() {
 			htmlTemplate = []byte(strings.Replace(string(htmlTemplate), origPath, newPath, -1))
 		}
 		// write html template to file
-		err = ioutil.WriteFile(htmlTemplatePath, htmlTemplate, 0644)
+		err = os.WriteFile(htmlTemplatePath, htmlTemplate, 0644)
 		if err != nil {
 			panic(err)
 		}
diff --git a/files/get_files_in_folder.go b/files/get_files_in_folder.go
index 449f31e..8783cd1 100644
--- a/files/get_files_in_folder.go
+++ b/files/get_files_in_folder.go
@@ -1,7 +1,6 @@
 package files
 
 import (
-	"io/ioutil"
 	"log"
 	"os"
 	"path"
@@ -15,7 +14,7 @@ func GetFullFilePathsInFolder(folder string) []string {
 	}
 
 	fullFolderPath := path.Join(currentPath, folder)
-	files, err := ioutil.ReadDir(fullFolderPath)
+	files, err := os.ReadDir(fullFolderPath)
 	if err != nil {
 		log.Fatal(err)
 	}
@@ -31,7 +30,7 @@ func GetFullFilePathsInFolder(folder string) []string {
 
 // Reads file contents by full path and returns string
 func ReadFileText(fullFilePath string) string {
-	file, err := ioutil.ReadFile(fullFilePath)
+	file, err := os.ReadFile(fullFilePath)
 	if err != nil {
 		log.Fatal(err)
 	}
diff --git a/gateway/connect.go b/gateway/connect.go
index 2b859b2..87b5fc6 100644
--- a/gateway/connect.go
+++ b/gateway/connect.go
@@ -3,7 +3,7 @@ package gateway
 import (
 	"bytes"
 	"encoding/json"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 
@@ -29,8 +29,9 @@ func Connect() {
 	if err != nil {
 		log.Panicln(err)
 	}
+	defer resp.Body.Close()
 	//We Read the response body on the line below.
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		log.Panicln(err)
 	}