diff --git a/.eslintrc.js b/.eslintrc.js
index 25c7274cf9..5d62342eb5 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -52,12 +52,15 @@ module.exports = {
       'destructuring': 'any',
       'ignoreReadBeforeAssign': false
     }],
-    
+
     // No async function without await
     'require-await': 2,
 
+    // Force dot notation when possible
     'dot-notation': 2,
-    
+
+    'no-var': 2,
+
     // Do not allow console.logs etc...
     'no-console': 2,
     'space-before-function-paren': [2, {
diff --git a/examples/auth-routes/api/index.js b/examples/auth-routes/api/index.js
index 7450bc9e6d..bc5383c3aa 100644
--- a/examples/auth-routes/api/index.js
+++ b/examples/auth-routes/api/index.js
@@ -5,7 +5,7 @@ const router = express.Router()
 
 // Transform req & res to have the same API as express
 // So we can use res.status() & res.json()
-var app = express()
+const app = express()
 router.use((req, res, next) => {
   Object.setPrototypeOf(req, app.request)
   Object.setPrototypeOf(res, app.response)
diff --git a/examples/tailwindcss/tailwind.js b/examples/tailwindcss/tailwind.js
index 040b3a7fbe..985d0465c4 100644
--- a/examples/tailwindcss/tailwind.js
+++ b/examples/tailwindcss/tailwind.js
@@ -41,7 +41,7 @@ View the full documentation at https://tailwindcss.com.
 |
 */
 
-var colors = {
+const colors = {
   'transparent': 'transparent',
 
   'black': '#222b2f',
diff --git a/examples/vuex-store-modules/pages/todos.vue b/examples/vuex-store-modules/pages/todos.vue
index 2188f972a2..3ca87b7a0b 100644
--- a/examples/vuex-store-modules/pages/todos.vue
+++ b/examples/vuex-store-modules/pages/todos.vue
@@ -21,7 +21,7 @@ export default {
   }),
   methods: {
     addTodo(e) {
-      var text = e.target.value
+      const text = e.target.value
       if (text.trim()) {
         this.$store.commit('todos/add', { text })
       }
diff --git a/examples/with-purgecss/tailwind.js b/examples/with-purgecss/tailwind.js
index 040b3a7fbe..985d0465c4 100644
--- a/examples/with-purgecss/tailwind.js
+++ b/examples/with-purgecss/tailwind.js
@@ -41,7 +41,7 @@ View the full documentation at https://tailwindcss.com.
 |
 */
 
-var colors = {
+const colors = {
   'transparent': 'transparent',
 
   'black': '#222b2f',