diff --git a/README.md b/README.md
index 437ffa48..db4ee800 100644
--- a/README.md
+++ b/README.md
@@ -29,22 +29,21 @@ So people and/or organization can see the stats of programming language being us
 ### Supported environment:
 * Prerequisite: 
 ```bash
-Node >= v18.18.0
-NPM >= 9.5.0
+Node >= 20.6.0+ (to enable .env support)
+NPM >= 9.8.1
 ```
 
 * [Generate access token (classic)](https://github.com/settings/tokens/new) with `repo` scope to ensure you don't get rate limited API call.
 
-* Define environment variable with the following values:
+* Copy `.env.example` to `.env` and fill in the required environment variables:
 ```
-TOKEN=your-access-token
 ENV=local
+TOKEN=your_github_access_token_here
+PORT=3000
 ```
 
-An example of environment variable is provided [here](.env.example)
-
 * Install dependency: `npm install`
-* Start the app `<list-of-env-and-values> npm run start` and go to `http://localhost:3000`
+* Start the app `npm run start:local` and go to `http://localhost:3000`
 
 ## Running with hot-reload
 ```bash
diff --git a/package.json b/package.json
index 396d9a1c..2133a617 100644
--- a/package.json
+++ b/package.json
@@ -4,12 +4,13 @@
   "type": "module",
   "description": "show programming language based on the repos of github's account",
   "engines": {
-    "node": "18.18.0",
+    "node": "20.6.0",
     "npm": "9.5.0"
   },
   "main": "index.js",
   "scripts": {
     "start": "node src/api/app.js | gulp",
+    "start:local": "node --env-file=.env src/api/app.js | gulp",
     "dev": "concurrently \"node src/api/app.js\" \"gulp watch\"",
     "lint": "eslint '**/*.js' --ignore-pattern src/utils/*.js",
     "lint:fix": "eslint --fix '**/*.js' --ignore-pattern node_modules/",
diff --git a/src/pages/partials/body.handlebars b/src/pages/partials/body.handlebars
index 004186c3..6669775c 100644
--- a/src/pages/partials/body.handlebars
+++ b/src/pages/partials/body.handlebars
@@ -114,4 +114,4 @@
     showLoader();
     return true;
   }
-</script>
+</script>
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