diff --git a/analysis_options.yaml b/analysis_options.yaml
new file mode 100644
index 0000000..f424be0
--- /dev/null
+++ b/analysis_options.yaml
@@ -0,0 +1,32 @@
+# This file configures the analyzer, which statically analyzes Dart code to
+# check for errors, warnings, and lints.
+#
+# The issues identified by the analyzer are surfaced in the UI of Dart-enabled
+# IDEs (https://dart.dev/tools#ides-and-editors). The analyzer can also be
+# invoked from the command line by running `flutter analyze`.
+
+# The following line activates a set of recommended lints for Flutter apps,
+# packages, and plugins designed to encourage good coding practices.
+include: package:flutter_lints/flutter.yaml
+
+# analyzer:
+#   errors:
+#     avoid_print: ignore
+
+linter:
+  # The lint rules applied to this project can be customized in the
+  # section below to disable rules from the `package:flutter_lints/flutter.yaml`
+  # included above or to enable additional rules. A list of all available lints
+  # and their documentation is published at https://dart.dev/tools/linter-rules.
+  #
+  # Instead of disabling a lint rule for the entire project in the
+  # section below, it can also be suppressed for a single line of code
+  # or a specific dart file by using the `// ignore: name_of_lint` and
+  # `// ignore_for_file: name_of_lint` syntax on the line or in the file
+  # producing the lint.
+  rules:
+    avoid_print: false  # Uncomment to disable the `avoid_print` rule
+    # prefer_single_quotes: true  # Uncomment to enable the `prefer_single_quotes` rule
+
+# Additional information about this file can be found at
+# https://dart.dev/tools/analysis
\ No newline at end of file
diff --git a/bin/env_reader.dart b/bin/env_reader.dart
index c65bcb3..d1f496d 100644
--- a/bin/env_reader.dart
+++ b/bin/env_reader.dart
@@ -1,40 +1,62 @@
-// ignore_for_file: avoid_print
 import 'dart:io';
+
 import 'package:args/args.dart';
 import 'package:env_reader/src/env_encryption.dart';
 
 part 'src/file.dart';
-part 'src/pubspec.dart';
-part 'src/json.dart';
 part 'src/gitignore.dart';
+part 'src/json.dart';
+part 'src/pubspec.dart';
 
 /// Dart runner for `EnvReader` library.
 void main(List<String> arguments) async {
-  ArgParser runner = ArgParser()
-    ..addOption('input',
-        abbr: 'i', help: 'Input path of the .env file', mandatory: true)
-    ..addOption('output',
-        abbr: 'o', help: 'Output path for the encrypted .env file')
-    ..addOption('key',
-        abbr: 's', help: 'Secret key for encryption & decryption')
+  final runner = ArgParser()
+    ..addOption(
+      'input',
+      abbr: 'i',
+      help: 'Input path of the .env file',
+      mandatory: true,
+    )
+    ..addOption(
+      'output',
+      abbr: 'o',
+      help: 'Output path for the encrypted .env file',
+    )
+    ..addOption(
+      'key',
+      abbr: 's',
+      help: 'Secret key for encryption & decryption',
+    )
     ..addOption('model', help: 'Generate dart model to your desired file path')
-    ..addFlag('null-safety',
-        defaultsTo: false, negatable: false, help: 'Make the model null safety')
-    ..addFlag('obfuscate',
-        defaultsTo: true, help: 'Obfuscating generated values of model')
-    ..addFlag('pubspec',
-        defaultsTo: true, help: 'Inserting asset path to pubspec.yaml')
-    ..addFlag('gitignore',
-        defaultsTo: true,
-        help: 'Inserting .env input & output file into .gitignore')
-    ..addFlag('help',
-        defaultsTo: false,
-        abbr: 'h',
-        negatable: false,
-        help: 'Print this usage information');
+    ..addFlag(
+      'null-safety',
+      negatable: false,
+      help: 'Make the model null safety',
+    )
+    ..addFlag(
+      'obfuscate',
+      defaultsTo: true,
+      help: 'Obfuscating generated values of model',
+    )
+    ..addFlag(
+      'pubspec',
+      defaultsTo: true,
+      help: 'Inserting asset path to pubspec.yaml',
+    )
+    ..addFlag(
+      'gitignore',
+      defaultsTo: true,
+      help: 'Inserting .env input & output file into .gitignore',
+    )
+    ..addFlag(
+      'help',
+      abbr: 'h',
+      negatable: false,
+      help: 'Print this usage information',
+    );
   try {
-    ArgResults argument = runner.parse(arguments);
-    if (argument["help"]) {
+    final argument = runner.parse(arguments);
+    if (argument['help']) {
       throw '\u001b[0mAvailable commands:';
     } else {
       insertJson(from: argument);
@@ -43,7 +65,7 @@ void main(List<String> arguments) async {
       insertFile(from: argument);
     }
   } catch (e) {
-    print("\n\u001b[31m$e\u001b[0m\n");
+    print('\n\u001b[31m$e\u001b[0m\n');
     print(runner.usage);
     print('\n\u001b[32mdart run\u001b[0m '
         '\u001b[36menv_reader\u001b[0m '
diff --git a/bin/src/gitignore.dart b/bin/src/gitignore.dart
index 93a8fce..8f5a230 100644
--- a/bin/src/gitignore.dart
+++ b/bin/src/gitignore.dart
@@ -2,16 +2,16 @@ part of '../env_reader.dart';
 
 /// A function to add your [input] into .gitignore file in the same directory.
 void insertGitignore({required ArgResults from}) {
-  bool insert = from["pubspec"];
+  final bool insert = from['pubspec'];
   if (insert) {
-    File gitignore = File('.gitignore');
-    String input = from["input"]!.toString();
-    String? output = from["output"]?.toString();
-    List<String> lines = gitignore.readAsLinesSync();
-    bool inputExisted = false;
-    bool outputExisted = false;
+    final gitignore = File('.gitignore');
+    final input = from['input']!.toString();
+    final output = from['output']?.toString();
+    final lines = gitignore.readAsLinesSync();
+    var inputExisted = false;
+    var outputExisted = false;
 
-    for (int i = 0; i < lines.length; i++) {
+    for (var i = 0; i < lines.length; i++) {
       if (lines[i].contains(input)) {
         inputExisted = true;
         break;
@@ -19,7 +19,7 @@ void insertGitignore({required ArgResults from}) {
     }
 
     if (output != null) {
-      for (var item in lines) {
+      for (final item in lines) {
         if (item.contains(output)) {
           outputExisted = true;
           break;
@@ -28,25 +28,25 @@ void insertGitignore({required ArgResults from}) {
     }
 
     if (!inputExisted) {
-      String comment = "# Env Reader related";
-      int index =
+      const comment = '# Env Reader related';
+      final index =
           lines.lastIndexWhere((line) => line.trim().startsWith(comment));
       if (index != -1) {
         lines.insert(index + 1, input);
       } else {
-        lines.insert(0, "$comment\n$input");
+        lines.insert(0, '$comment\n$input');
       }
     }
 
     if (!outputExisted && output != null) {
-      String comment = "# Env Reader related";
-      int index =
+      const comment = '# Env Reader related';
+      final index =
           lines.lastIndexWhere((line) => line.trim().startsWith(comment));
-      String export = outputExisted ? "" : output;
+      final export = outputExisted ? '' : output;
       if (index != -1) {
         lines.insert(index + 1, export);
       } else {
-        lines.insert(0, "$comment\n$export");
+        lines.insert(0, '$comment\n$export');
       }
     }
 
diff --git a/bin/src/json.dart b/bin/src/json.dart
index 4128722..7e79ad5 100644
--- a/bin/src/json.dart
+++ b/bin/src/json.dart
@@ -3,32 +3,32 @@ part of '../env_reader.dart';
 
 /// A function to generate dart model out of .env file
 void insertJson({required ArgResults from}) {
-  String? model = from["model"]?.toString();
+  final model = from['model']?.toString();
   if (model != null) {
     // Fetching arguments
-    String path = model.replaceAll(RegExp(r'/[^/]+$'), "/");
-    String name = model
-        .split("/")
+    final path = model.replaceAll(RegExp(r'/[^/]+$'), '/');
+    final name = model
+        .split('/')
         .last
-        .split(".")
+        .split('.')
         .first
-        .split("_")
-        .map((e) => capitalize(e))
-        .join("");
-    String input = from["input"]!.toString();
-    bool obfuscate = from['obfuscate'];
-    String data = File(input).readAsStringSync();
-    bool nullSafety = from["null-safety"];
+        .split('_')
+        .map(capitalize)
+        .join();
+    final input = from['input']!.toString();
+    final bool obfuscate = from['obfuscate'];
+    final data = File(input).readAsStringSync();
+    final bool nullSafety = from['null-safety'];
 
     // Parsing .env toJson
-    Map<String, dynamic> json = toJson(data);
+    final json = toJson(data);
 
     // Generating model
-    String cast = json.entries.map((e) {
-      Type type = e.value.runtimeType;
-      String name = dartNamed(e.key);
+    final cast = json.entries.map((e) {
+      final type = e.value.runtimeType;
+      final name = dartNamed(e.key);
       if (obfuscate) {
-        String variable = nullSafety
+        final variable = nullSafety
             ? "Env.read<$type>('${e.key}') ?? ${type == bool ? 'false' : type == int ? '0' : type == double ? '0.0' : "'${e.key}'"}"
             : "Env.read<$type>('${e.key}')";
 
@@ -49,8 +49,8 @@ void insertJson({required ArgResults from}) {
   static const $type $name = ${type == String ? "'${e.value}'" : e.value ?? 'e.key'};
 """;
       }
-    }).join("\n");
-    String write = """
+    }).join('\n');
+    final write = """
 // Env Reader Auto-Generated Model File
 // Created at ${DateTime.now()}
 // 🍔 [Buy me a coffee](https://www.buymeacoffee.com/nialixus) 🚀
@@ -65,7 +65,8 @@ $cast
     Directory(path).createSync(recursive: true);
     File(model).writeAsStringSync(write);
     print(
-        "\x1B[32m$input\x1B[0m successfully generated into \x1B[34m$model\x1B[0m 🎉");
+      '\x1B[32m$input\x1B[0m successfully generated into \x1B[34m$model\x1B[0m 🎉',
+    );
   }
 }
 
@@ -110,8 +111,8 @@ String capitalize(String text) {
 
 /// A function to generate dart naming style of [String].
 String dartNamed(String input) {
-  List<String> words = input.split('_');
-  String firstWord = words.first.toLowerCase();
-  String restOfWords = words.sublist(1).map((word) => capitalize(word)).join();
+  final words = input.split('_');
+  final firstWord = words.first.toLowerCase();
+  final restOfWords = words.sublist(1).map(capitalize).join();
   return '$firstWord$restOfWords';
 }
diff --git a/bin/src/pubspec.dart b/bin/src/pubspec.dart
index ada0496..2dfd4c4 100644
--- a/bin/src/pubspec.dart
+++ b/bin/src/pubspec.dart
@@ -4,28 +4,28 @@ part of '../env_reader.dart';
 /// A function to check wether the output path (if its's an assets directory) already exist in `pubspec.yaml` or not.
 /// If it hasn't, this function inserting the output path given into your pubspec.yaml, and if its already there, this will do nothing.
 void insertPubspec({required ArgResults from}) {
-  bool insert = from["pubspec"] ?? true;
-  String input = from["input"]!.toString();
-  String? output = from['output']?.toString();
+  final bool insert = from['pubspec'] ?? true;
+  final input = from['input']!.toString();
+  final output = from['output']?.toString();
   if (insert && output != null) {
-    String output =
-        from["output"]!.toString().replaceAll(RegExp(r'/[^/]+$'), "/");
-    if (output.startsWith("assets/")) {
-      File pubspec = File('pubspec.yaml');
-      List<String> lines = pubspec.readAsLinesSync();
-      bool existed = false;
+    final output =
+        from['output']!.toString().replaceAll(RegExp(r'/[^/]+$'), '/');
+    if (output.startsWith('assets/')) {
+      final pubspec = File('pubspec.yaml');
+      final lines = pubspec.readAsLinesSync();
+      var existed = false;
 
-      for (int i = 0; i < lines.length; i++) {
-        if (lines[i].contains("- $output")) {
+      for (var i = 0; i < lines.length; i++) {
+        if (lines[i].contains('- $output')) {
           existed = true;
           break;
         }
       }
 
       if (!existed) {
-        int flutterIndex =
+        final flutterIndex =
             lines.lastIndexWhere((line) => line.trim() == 'flutter:');
-        int assetsIndex =
+        final assetsIndex =
             lines.lastIndexWhere((line) => line.trim() == 'assets:');
         if (flutterIndex == -1) {
           lines.insert(lines.length - 1, 'flutter:\n  assets:\n    - $output');
@@ -41,9 +41,11 @@ void insertPubspec({required ArgResults from}) {
       }
     } else {
       print(
-          "\u001b[33m--pubspec\u001b[0m \u001b[2mflag ignored, due to output not in assets directory\u001b[0m");
+        '\u001b[33m--pubspec\u001b[0m \u001b[2mflag ignored, due to output not in assets directory\u001b[0m',
+      );
       print(
-          "\u001b[2mThis make the $input not accesible for every flutter platform\u001b[0m");
+        '\u001b[2mThis make the $input not accesible for every flutter platform\u001b[0m',
+      );
     }
   }
 }
diff --git a/example/pubspec.lock b/example/pubspec.lock
index ae2ab4f..29a54b5 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -13,42 +13,42 @@ packages:
     dependency: transitive
     description:
       name: async
-      sha256: "947bfcf187f74dbc5e146c9eb9c0f10c9f8b30743e341481c1e2ed3ecc18c20c"
+      sha256: d2872f9c19731c2e5f10444b14686eb7cc85c76274bd6c16e1816bff9a3bab63
       url: "https://pub.dev"
     source: hosted
-    version: "2.11.0"
+    version: "2.12.0"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
-      sha256: "6cfb5af12253eaf2b368f07bacc5a80d1301a071c73360d746b7f2e32d762c66"
+      sha256: "8aab1771e1243a5063b8b0ff68042d67334e3feab9e95b9490f9a6ebf73b42ea"
       url: "https://pub.dev"
     source: hosted
-    version: "2.1.1"
+    version: "2.1.2"
   characters:
     dependency: transitive
     description:
       name: characters
-      sha256: "04a925763edad70e8443c99234dc3328f442e811f1d8fd1a72f1c8ad0f69a605"
+      sha256: f71061c654a3380576a52b451dd5532377954cf9dbd272a78fc8479606670803
       url: "https://pub.dev"
     source: hosted
-    version: "1.3.0"
+    version: "1.4.0"
   clock:
     dependency: transitive
     description:
       name: clock
-      sha256: cb6d7f03e1de671e34607e909a7213e31d7752be4fb66a86d29fe1eb14bfb5cf
+      sha256: fddb70d9b5277016c77a80201021d40a2247104d9f4aa7bab7157b7e3f05b84b
       url: "https://pub.dev"
     source: hosted
-    version: "1.1.1"
+    version: "1.1.2"
   collection:
     dependency: transitive
     description:
       name: collection
-      sha256: f092b211a4319e98e5ff58223576de6c2803db36221657b46c82574721240687
+      sha256: "2f5709ae4d3d59dd8f7cd309b4e023046b57d8a6c82130785d2b0e5868084e76"
       url: "https://pub.dev"
     source: hosted
-    version: "1.17.2"
+    version: "1.19.1"
   crypto:
     dependency: transitive
     description:
@@ -79,15 +79,15 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "2.0.3"
+    version: "2.1.0"
   fake_async:
     dependency: transitive
     description:
       name: fake_async
-      sha256: "511392330127add0b769b75a987850d136345d9227c6b94c96a04cf4a391bf78"
+      sha256: "6a95e56b2449df2273fd8c45a662d6947ce1ebb7aafe80e550a3f68297f3cacc"
       url: "https://pub.dev"
     source: hosted
-    version: "1.3.1"
+    version: "1.3.2"
   ffi:
     dependency: transitive
     description:
@@ -138,6 +138,30 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.6.7"
+  leak_tracker:
+    dependency: transitive
+    description:
+      name: leak_tracker
+      sha256: c35baad643ba394b40aac41080300150a4f08fd0fd6a10378f8f7c6bc161acec
+      url: "https://pub.dev"
+    source: hosted
+    version: "10.0.8"
+  leak_tracker_flutter_testing:
+    dependency: transitive
+    description:
+      name: leak_tracker_flutter_testing
+      sha256: f8b613e7e6a13ec79cfdc0e97638fddb3ab848452eff057653abd3edba760573
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.9"
+  leak_tracker_testing:
+    dependency: transitive
+    description:
+      name: leak_tracker_testing
+      sha256: "6ba465d5d76e67ddf503e1161d1f4a6bc42306f9d66ca1e8f079a47290fb06d3"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.1"
   lints:
     dependency: transitive
     description:
@@ -150,87 +174,87 @@ packages:
     dependency: transitive
     description:
       name: matcher
-      sha256: "1803e76e6653768d64ed8ff2e1e67bea3ad4b923eb5c56a295c3e634bad5960e"
+      sha256: dc58c723c3c24bf8d3e2d3ad3f2f9d7bd9cf43ec6feaa64181775e60190153f2
       url: "https://pub.dev"
     source: hosted
-    version: "0.12.16"
+    version: "0.12.17"
   material_color_utilities:
     dependency: transitive
     description:
       name: material_color_utilities
-      sha256: "9528f2f296073ff54cb9fee677df673ace1218163c3bc7628093e7eed5203d41"
+      sha256: f7142bb1154231d7ea5f96bc7bde4bda2a0945d2806bb11670e30b850d56bdec
       url: "https://pub.dev"
     source: hosted
-    version: "0.5.0"
+    version: "0.11.1"
   meta:
     dependency: transitive
     description:
       name: meta
-      sha256: "3c74dbf8763d36539f114c799d8a2d87343b5067e9d796ca22b5eb8437090ee3"
+      sha256: e3641ec5d63ebf0d9b41bd43201a66e3fc79a65db5f61fc181f04cd27aab950c
       url: "https://pub.dev"
     source: hosted
-    version: "1.9.1"
+    version: "1.16.0"
   path:
     dependency: transitive
     description:
       name: path
-      sha256: "8829d8a55c13fc0e37127c29fedf290c102f4e40ae94ada574091fe0ff96c917"
+      sha256: "75cca69d1490965be98c73ceaea117e8a04dd21217b37b292c9ddbec0d955bc5"
       url: "https://pub.dev"
     source: hosted
-    version: "1.8.3"
+    version: "1.9.1"
   sky_engine:
     dependency: transitive
     description: flutter
     source: sdk
-    version: "0.0.99"
+    version: "0.0.0"
   source_span:
     dependency: transitive
     description:
       name: source_span
-      sha256: "53e943d4206a5e30df338fd4c6e7a077e02254531b138a15aec3bd143c1a8b3c"
+      sha256: "254ee5351d6cb365c859e20ee823c3bb479bf4a293c22d17a9f1bf144ce86f7c"
       url: "https://pub.dev"
     source: hosted
-    version: "1.10.0"
+    version: "1.10.1"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
-      sha256: c3c7d8edb15bee7f0f74debd4b9c5f3c2ea86766fe4178eb2a18eb30a0bdaed5
+      sha256: "8b27215b45d22309b5cddda1aa2b19bdfec9df0e765f2de506401c071d38d1b1"
       url: "https://pub.dev"
     source: hosted
-    version: "1.11.0"
+    version: "1.12.1"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
-      sha256: "83615bee9045c1d322bbbd1ba209b7a749c2cbcdcb3fdd1df8eb488b3279c1c8"
+      sha256: "969e04c80b8bcdf826f8f16579c7b14d780458bd97f56d107d3950fdbeef059d"
       url: "https://pub.dev"
     source: hosted
-    version: "2.1.1"
+    version: "2.1.4"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
-      sha256: "556692adab6cfa87322a115640c11f13cb77b3f076ddcc5d6ae3c20242bedcde"
+      sha256: "921cd31725b72fe181906c6a94d987c78e3b98c2e205b397ea399d4054872b43"
       url: "https://pub.dev"
     source: hosted
-    version: "1.2.0"
+    version: "1.4.1"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
-      sha256: a29248a84fbb7c79282b40b8c72a1209db169a2e0542bce341da992fe1bc7e84
+      sha256: "7f554798625ea768a7518313e58f83891c7f5024f88e46e7182a4558850a4b8e"
       url: "https://pub.dev"
     source: hosted
-    version: "1.2.1"
+    version: "1.2.2"
   test_api:
     dependency: transitive
     description:
       name: test_api
-      sha256: "75760ffd7786fffdfb9597c35c5b27eaeec82be8edfb6d71d32651128ed7aab8"
+      sha256: fb31f383e2ee25fbbfe06b40fe21e1e458d14080e3c67e7ba0acfde4df4e0bbd
       url: "https://pub.dev"
     source: hosted
-    version: "0.6.0"
+    version: "0.7.4"
   typed_data:
     dependency: transitive
     description:
@@ -247,13 +271,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.1.4"
-  web:
+  vm_service:
     dependency: transitive
     description:
-      name: web
-      sha256: dc8ccd225a2005c1be616fe02951e2e342092edf968cf0844220383757ef8f10
+      name: vm_service
+      sha256: "0968250880a6c5fe7edc067ed0a13d4bae1577fe2771dcf3010d52c4a9d3ca14"
       url: "https://pub.dev"
     source: hosted
-    version: "0.1.4-beta"
+    version: "14.3.1"
 sdks:
-  dart: ">=3.1.0 <4.0.0"
+  dart: ">=3.7.0-0 <4.0.0"
+  flutter: ">=3.18.0-18.0.pre.54"
diff --git a/lib/env_reader.dart b/lib/env_reader.dart
index ee62d48..f7ca7b9 100644
--- a/lib/env_reader.dart
+++ b/lib/env_reader.dart
@@ -16,12 +16,13 @@
 /// int port = Env.read<int>("PORT") ?? 8080;
 /// bool isDebug = Env.read<bool>("DEBUG") ?? false;
 /// ```
-library env_reader;
+library;
 
 import 'dart:async';
 import 'dart:developer';
 import 'dart:io';
 import 'dart:typed_data';
+
 import 'package:env_reader/src/env_encryption.dart';
 import 'package:env_reader/src/env_parser.dart';
 import 'package:http/http.dart';
@@ -82,7 +83,7 @@ class EnvReader {
     try {
       value = await source.data(key);
     } catch (e) {
-      log("\u001b[1mEnvReader:\u001b[31m Unable to load data\u001b[0m\n$e");
+      log('\u001b[1mEnvReader:\u001b[31m Unable to load data\u001b[0m\n$e');
     }
   }
 
@@ -106,7 +107,7 @@ class EnvReader {
   /// ```
   T? read<T extends Object>(String key) {
     try {
-      return toJson[key];
+      return toJson[key] as T?;
     } catch (e) {
       return null;
     }
diff --git a/pubspec.yaml b/pubspec.yaml
index 86b15ed..0084e58 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -27,8 +27,9 @@ environment:
   sdk: '>=3.1.0 <4.0.0'
 
 dependencies:
-  args: ^2.4.2
-  cryptography: ^2.2.0
-  http: ^1.1.0
+  args: ^2.7.0
+  cryptography: ^2.7.0
+  http: ^1.3.0
 
 dev_dependencies:
+  flutter_lints: ^5.0.0