diff --git a/lib/adapters/http.js b/lib/adapters/http.js
index 1fc8d911dcef146c5b61e51a44320684cc459bf2..1126c2ccd7949d05e18ee16cb4224d5d55306f3b 100644
--- a/lib/adapters/http.js
+++ b/lib/adapters/http.js
@@ -3,7 +3,9 @@ var defaults = require('./../defaults');
 var transformData = require('./../transformData');
 var utils = require('./../utils');
 var http = require('http');
+var https = require('https');
 var url = require('url');
+var pkg = require('./../../package.json');
 var Buffer = require('buffer').Buffer;
 
 module.exports = function httpAdapter(resolve, reject, config) {
@@ -21,6 +23,9 @@ module.exports = function httpAdapter(resolve, reject, config) {
     config.headers || {}
   );
 
+  // Set User-Agent (required by some servers)
+  headers['User-Agent'] = 'node-axios/' + pkg.version;
+
   if (data) {
     if (utils.isArrayBuffer(data)) {
       data = new Buffer(new Uint8Array(data));
@@ -29,6 +34,7 @@ module.exports = function httpAdapter(resolve, reject, config) {
     } else {
       return reject(new Error('Data after transformation must be a string or an ArrayBuffer'));
     }
+
     // Add Content-Length header if data exists
     headers['Content-Length'] = data.length;
   }
@@ -44,7 +50,8 @@ module.exports = function httpAdapter(resolve, reject, config) {
   };
 
   // Create the request
-  var req = http.request(options, function (res) {
+  var transport = parsed.protocol === 'https:' ? https : http;
+  var req = transport.request(options, function (res) {
     var responseText = '';
     res.on('data', function (chunk) {
       responseText += chunk;