diff --git a/build/functions/argument-parser.js b/build/functions/argument-parser.js
index 9c5d9e0..d279825 100644
--- a/build/functions/argument-parser.js
+++ b/build/functions/argument-parser.js
@@ -43,8 +43,13 @@ var ESCAPABLE = '.^$*+?()[{\\|}]'.split('');
  */
 
 function argumentParser(format, string) {
-  string = string.replace(/[^\s]+/, '');
-  format = format.replace(/[^\s]+/, '');
+  string = string.replace(/[^\s]+/, '').trim();
+  format = format.replace(/[^\s]+/, '').trim();
+
+  if (!string || !format) {
+    return {};
+  }
+
   var indexes = [];
 
   format = format.replace(/\s/g, '\\s*');
diff --git a/build/functions/fetch.js b/build/functions/fetch.js
index 97275ee..32830b3 100644
--- a/build/functions/fetch.js
+++ b/build/functions/fetch.js
@@ -8,25 +8,49 @@ exports.getBody = getBody;
 
 function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
 
-var _restler = require('restler');
+var _unirest = require('unirest');
 
-var _restler2 = _interopRequireDefault(_restler);
+var _unirest2 = _interopRequireDefault(_unirest);
 
 function fetch(path) {
   var data = arguments[1] === undefined ? {} : arguments[1];
 
   return new Promise(function (resolve, reject) {
-    var method = Object.keys(data).length ? 'POST' : 'GET';
-    var multipart = method === 'POST' ? true : false;
+    var files = {};
 
-    _restler2['default'].request('https://api.telegram.org/bot' + path, {
-      data: data, method: method, multipart: multipart
-    }).on('complete', function (response) {
+    var _iteratorNormalCompletion = true;
+    var _didIteratorError = false;
+    var _iteratorError = undefined;
+
+    try {
+      for (var _iterator = Object.keys(data)[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
+        var key = _step.value;
+
+        if (data[key].file) {
+          files[key] = data[key].file;
+          delete data[key];
+        }
+      }
+    } catch (err) {
+      _didIteratorError = true;
+      _iteratorError = err;
+    } finally {
       try {
-        var json = JSON.parse(response);
-        resolve(json);
-      } catch (e) {
-        reject(e);
+        if (!_iteratorNormalCompletion && _iterator['return']) {
+          _iterator['return']();
+        }
+      } finally {
+        if (_didIteratorError) {
+          throw _iteratorError;
+        }
+      }
+    }
+
+    _unirest2['default'].post('https://api.telegram.org/bot' + path).field(data).attach(files).end(function (response) {
+      if (response.statusType === 4 || response.statusType === 5) {
+        reject(response);
+      } else {
+        resolve(response.body);
       }
     });
   });
diff --git a/build/index.js b/build/index.js
index 76d026e..bde391d 100644
--- a/build/index.js
+++ b/build/index.js
@@ -154,7 +154,7 @@ var Bot = (function (_EventEmitter) {
     value: function command(_command, listener) {
       var regex = /[^\s]+/;
 
-      var cmd = _command.match(regex)[0];
+      var cmd = _command.match(regex)[0].trim();
 
       this._userEvents.push({
         pattern: new RegExp('^/' + cmd),
diff --git a/build/types/File.js b/build/types/File.js
index 04e78e6..30f54f4 100644
--- a/build/types/File.js
+++ b/build/types/File.js
@@ -24,18 +24,6 @@ var _mime = require('mime');
 
 var _mime2 = _interopRequireDefault(_mime);
 
-var _fs = require('fs');
-
-var _fs2 = _interopRequireDefault(_fs);
-
-var _path = require('path');
-
-var _path2 = _interopRequireDefault(_path);
-
-var _restler = require('restler');
-
-var _restler2 = _interopRequireDefault(_restler);
-
 var TYPES = ['photo', 'video', 'document', 'audio'];
 
 /**
@@ -85,14 +73,11 @@ var File = (function (_Base) {
      */
     value: function file(_file, fileType) {
       if (fileType) {
-        this.properties[fileType] = _file;
+        this.properties[fileType] = { file: _file };
 
         return this;
       }
 
-      var stat = _fs2['default'].statSync(_file);
-      var name = _path2['default'].basename(_file);
-
       var _mime$lookup$split = _mime2['default'].lookup(_file).split('/');
 
       var _mime$lookup$split2 = _slicedToArray(_mime$lookup$split, 2);
@@ -112,7 +97,7 @@ var File = (function (_Base) {
         type = 'document';
       }
 
-      this.properties[type] = _restler2['default'].file(_file, name, stat.size, 'utf-8');
+      this.properties[type] = { file: _file };
 
       this.method = 'send' + (type[0].toUpperCase() + type.slice(1));
 
diff --git a/lib/functions/argument-parser.js b/lib/functions/argument-parser.js
index 39e2006..dd9aac6 100644
--- a/lib/functions/argument-parser.js
+++ b/lib/functions/argument-parser.js
@@ -33,8 +33,13 @@ const ESCAPABLE = '.^$*+?()[{\\|}]'.split('');
  * @return {object} Parsed arguments
  */
 export default function argumentParser(format, string) {
-  string = string.replace(/[^\s]+/, '');
-  format = format.replace(/[^\s]+/, '');
+  string = string.replace(/[^\s]+/, '').trim();
+  format = format.replace(/[^\s]+/, '').trim();
+
+  if (!string || !format) {
+    return {};
+  }
+
   let indexes = [];
 
   format = format.replace(/\s/g, '\\s*');
diff --git a/lib/functions/fetch.js b/lib/functions/fetch.js
index d0ebe96..e88461f 100644
--- a/lib/functions/fetch.js
+++ b/lib/functions/fetch.js
@@ -1,18 +1,24 @@
-import restler from 'restler';
+import unirest from 'unirest';
 
 export default function fetch(path, data = {}) {
   return new Promise((resolve, reject) => {
-    const method = Object.keys(data).length ? 'POST' : 'GET';
-    const multipart = method === 'POST' ? true : false;
+    const files = {};
 
-    restler.request('https://api.telegram.org/bot' + path, {
-      data, method, multipart
-    }).on('complete', response => {
-      try {
-        let json = JSON.parse(response);
-        resolve(json);
-      } catch(e) {
-        reject(e);
+    for (let key of Object.keys(data)) {
+      if (data[key].file) {
+        files[key] = data[key].file;
+        delete data[key];
+      }
+    }
+
+    unirest.post('https://api.telegram.org/bot' + path)
+    .field(data)
+    .attach(files)
+    .end(response => {
+      if (response.statusType === 4 || response.statusType === 5) {
+        reject(response);
+      } else {
+        resolve(response.body);
       }
     });
   });
diff --git a/lib/index.js b/lib/index.js
index c5871c3..1d9add8 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -109,7 +109,7 @@ export default class Bot extends EventEmitter {
   command(command, listener) {
     const regex = /[^\s]+/;
 
-    const cmd = command.match(regex)[0];
+    const cmd = command.match(regex)[0].trim();
 
     this._userEvents.push({
       pattern: new RegExp(`^/${cmd}`),
diff --git a/lib/types/File.js b/lib/types/File.js
index 39fbfa6..8fed1d7 100644
--- a/lib/types/File.js
+++ b/lib/types/File.js
@@ -1,8 +1,5 @@
 import Base from './Base';
 import mime from 'mime';
-import fs from 'fs';
-import path from 'path';
-import restler from 'restler';
 
 const TYPES = ['photo', 'video', 'document', 'audio'];
 
@@ -40,14 +37,11 @@ export default class File extends Base {
    */
   file(file, fileType) {
     if (fileType) {
-      this.properties[fileType] = file;
+      this.properties[fileType] = {file: file};
 
       return this;
     }
 
-    const stat = fs.statSync(file);
-    const name = path.basename(file);
-
     let [type, extension] = mime.lookup(file).split('/');
     if (type === 'image') {
       type = 'photo';
@@ -61,7 +55,7 @@ export default class File extends Base {
       type = 'document';
     }
 
-    this.properties[type] = restler.file(file, name, stat.size, 'utf-8');
+    this.properties[type] = {file: file};
 
     this.method = `send${type[0].toUpperCase() + type.slice(1)}`;
 
diff --git a/package.json b/package.json
index 125b3cf..5d263c1 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "telegram-api",
-  "version": "0.4.65",
+  "version": "0.4.70",
   "description": "Control Telegram bots easily using the new Telegram API",
   "main": "index.js",
   "scripts": {
@@ -21,7 +21,11 @@
   "bugs": {
     "url": "https://github.com/mdibaiee/node-telegram-api/issues"
   },
-  "files": ["types", "build", "index.js"],
+  "files": [
+    "types",
+    "build",
+    "index.js"
+  ],
   "directories": {
     "lib": "lib"
   },
@@ -38,6 +42,6 @@
     "grunt-eslint": "^16.0.0",
     "mime": "^1.3.4",
     "qs": "^4.0.0",
-    "restler": "^3.3.0"
+    "unirest": "^0.4.2"
   }
 }
diff --git a/types/File.js b/types/File.js
index 04e78e6..30f54f4 100644
--- a/types/File.js
+++ b/types/File.js
@@ -24,18 +24,6 @@ var _mime = require('mime');
 
 var _mime2 = _interopRequireDefault(_mime);
 
-var _fs = require('fs');
-
-var _fs2 = _interopRequireDefault(_fs);
-
-var _path = require('path');
-
-var _path2 = _interopRequireDefault(_path);
-
-var _restler = require('restler');
-
-var _restler2 = _interopRequireDefault(_restler);
-
 var TYPES = ['photo', 'video', 'document', 'audio'];
 
 /**
@@ -85,14 +73,11 @@ var File = (function (_Base) {
      */
     value: function file(_file, fileType) {
       if (fileType) {
-        this.properties[fileType] = _file;
+        this.properties[fileType] = { file: _file };
 
         return this;
       }
 
-      var stat = _fs2['default'].statSync(_file);
-      var name = _path2['default'].basename(_file);
-
       var _mime$lookup$split = _mime2['default'].lookup(_file).split('/');
 
       var _mime$lookup$split2 = _slicedToArray(_mime$lookup$split, 2);
@@ -112,7 +97,7 @@ var File = (function (_Base) {
         type = 'document';
       }
 
-      this.properties[type] = _restler2['default'].file(_file, name, stat.size, 'utf-8');
+      this.properties[type] = { file: _file };
 
       this.method = 'send' + (type[0].toUpperCase() + type.slice(1));