diff --git a/README.md b/README.md
index d754176..5ab520c 100644
--- a/README.md
+++ b/README.md
@@ -48,6 +48,8 @@ Fullstack:
 
 > [Angular 12 + Node.js Express + MySQL example](https://www.bezkoder.com/angular-12-node-js-express-mysql/)
 
+> [Angular 13 + Node.js Express + MySQL example](https://www.bezkoder.com/angular-13-node-js-express-mysql/)
+
 > [React + Node.js + Express + MySQL example](https://www.bezkoder.com/react-node-express-mysql/)
 
 > [React + Redux + Node.js Express + MySQL](https://www.bezkoder.com/react-redux-mysql-crud/)
diff --git a/app/controllers/tutorial.controller.js b/app/controllers/tutorial.controller.js
index 7da857a..ff5f42c 100644
--- a/app/controllers/tutorial.controller.js
+++ b/app/controllers/tutorial.controller.js
@@ -2,129 +2,119 @@ const Tutorial = require("../models/tutorial.model.js");
 
 // Create and Save a new Tutorial
 exports.create = (req, res) => {
+  const { title, description, published } = req.body;
   // Validate request
   if (!req.body) {
-    res.status(400).send({
-      message: "Content can not be empty!"
-    });
+    return res.status(400).json({ message: "Content can not be empty!" });
   }
 
   // Create a Tutorial
   const tutorial = new Tutorial({
-    title: req.body.title,
-    description: req.body.description,
-    published: req.body.published || false
+    title,
+    description,
+    published: published || false,
   });
 
   // Save Tutorial in the database
   Tutorial.create(tutorial, (err, data) => {
-    if (err)
-      res.status(500).send({
-        message:
-          err.message || "Some error occurred while creating the Tutorial."
-      });
-    else res.send(data);
+    if (err) {
+      return res.status(500).json({ message: err.message || "Some error occurred while creating the Tutorial." });
+    }
+    
+    return res.status(200).json(data);
   });
 };
 
 // Retrieve all Tutorials from the database (with condition).
 exports.findAll = (req, res) => {
-  const title = req.query.title;
+  const { title } = req.query;
 
   Tutorial.getAll(title, (err, data) => {
-    if (err)
-      res.status(500).send({
-        message:
-          err.message || "Some error occurred while retrieving tutorials."
-      });
-    else res.send(data);
+    if (err) {
+      return res.status(500).json({ message: err.message || "Some error occurred while retrieving tutorials." });
+    }
+    
+    return res.status(200).json(data);
   });
 };
 
 // Find a single Tutorial by Id
 exports.findOne = (req, res) => {
-  Tutorial.findById(req.params.id, (err, data) => {
+  const { id } = req.params;
+  
+  Tutorial.findById(id, (err, data) => {
     if (err) {
       if (err.kind === "not_found") {
-        res.status(404).send({
-          message: `Not found Tutorial with id ${req.params.id}.`
-        });
+        return res.status(404).json({ message: `Not found Tutorial with id ${req.params.id}.` });
       } else {
-        res.status(500).send({
-          message: "Error retrieving Tutorial with id " + req.params.id
-        });
+        return res.status(500).json({ message: `Error retrieving Tutorial with id ${req.params.id}` });
       }
-    } else res.send(data);
+    }
+    
+    return res.status(200).json(data);
   });
 };
 
 // find all published Tutorials
 exports.findAllPublished = (req, res) => {
   Tutorial.getAllPublished((err, data) => {
-    if (err)
-      res.status(500).send({
-        message:
-          err.message || "Some error occurred while retrieving tutorials."
-      });
-    else res.send(data);
+    if (err) {
+      return res.status(500).json({ message: err.message || "Some error occurred while retrieving tutorials." });
+    }
+      
+    return res.status(200).json(data);
   });
 };
 
 // Update a Tutorial identified by the id in the request
 exports.update = (req, res) => {
+  const { id } = req.params;
+
   // Validate Request
   if (!req.body) {
-    res.status(400).send({
-      message: "Content can not be empty!"
-    });
+    return res.status(400).json({ message: "Content can not be empty!" });
   }
 
-  console.log(req.body);
-
   Tutorial.updateById(
-    req.params.id,
+    id,
     new Tutorial(req.body),
     (err, data) => {
       if (err) {
         if (err.kind === "not_found") {
-          res.status(404).send({
-            message: `Not found Tutorial with id ${req.params.id}.`
-          });
+          return res.status(404).json({ message: `Not found Tutorial with id ${id}.` });
         } else {
-          res.status(500).send({
-            message: "Error updating Tutorial with id " + req.params.id
-          });
+          return res.status(500).json({ message: `Error updating Tutorial with id ${id}` });
         }
-      } else res.send(data);
+      }
+      
+      return res.status(200).json(data);
     }
   );
 };
 
 // Delete a Tutorial with the specified id in the request
 exports.delete = (req, res) => {
-  Tutorial.remove(req.params.id, (err, data) => {
+  const { id } = req.params;
+  Tutorial.remove(id, (err, data) => {
     if (err) {
       if (err.kind === "not_found") {
-        res.status(404).send({
-          message: `Not found Tutorial with id ${req.params.id}.`
-        });
+        return res.status(404).json({ message: `Not found Tutorial with id ${id}.` });
       } else {
-        res.status(500).send({
-          message: "Could not delete Tutorial with id " + req.params.id
-        });
+        return res.status(500).json({ message: `Could not delete Tutorial with id ${id}` });
       }
-    } else res.send({ message: `Tutorial was deleted successfully!` });
+    }
+    
+    return res.status(200).json({ message: `Tutorial was deleted successfully!` });
   });
 };
 
 // Delete all Tutorials from the database.
 exports.deleteAll = (req, res) => {
   Tutorial.removeAll((err, data) => {
-    if (err)
-      res.status(500).send({
-        message:
-          err.message || "Some error occurred while removing all tutorials."
-      });
-    else res.send({ message: `All Tutorials were deleted successfully!` });
+    if (err) {
+      return res.status(500).json({ message: err.message || "Some error occurred while removing all tutorials." });
+    }
+    
+    return res.status(200).json({ message: `All Tutorials were deleted successfully!` });
   });
 };
diff --git a/package.json b/package.json
index ef1deac..e0a3e02 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
   "license": "ISC",
   "dependencies": {
     "cors": "^2.8.5",
-    "express": "^4.17.1",
-    "mysql": "^2.17.1"
+    "express": "^4.18.1",
+    "mysql": "^2.18.1"
   }
 }