diff --git a/ox/api.py b/ox/api.py
index 639fec0..894e26d 100644
--- a/ox/api.py
+++ b/ox/api.py
@@ -4,7 +4,6 @@
 from __future__ import print_function
 from types import MethodType
 import gzip
-import mimetypes
 import os
 import shutil
 import sys
@@ -14,7 +13,6 @@ from six.moves import http_cookiejar as cookielib
 from six import BytesIO, PY2
 from six.moves import urllib
 from six.moves.urllib.parse import urlparse
-import requests
 
 from . import __version__
 from .utils import json
@@ -39,13 +37,12 @@ class API(object):
             self._cj = cj
         else:
             self._cj = cookielib.CookieJar()
+        self._opener = urllib.request.build_opener(urllib.request.HTTPCookieProcessor(self._cj),
+                                            urllib.request.HTTPHandler(debuglevel=self.debuglevel))
+        self._opener.addheaders = [
+            ('User-Agent', '%s/%s' % (self.__name__, self.__version__))
+        ]
 
-        self._requests_session = requests.Session()
-        self._requests_session.cookies = self._cj
-        self._requests_session.headers = {
-            'User-Agent': '%s/%s' % (self.__name__, self.__version__),
-            'Accept-Encoding': 'gzip, deflate',
-        }
         self.url = url
         r = self._request('api', {'docs': True})
         self._properties = r['data']['actions']
@@ -79,12 +76,26 @@ class API(object):
             method.func_name = action
         self._add_method(method, action)
 
-    def _json_request(self, url, data, files=None):
+    def _json_request(self, url, form):
         result = {}
         try:
-            request = self._requests_session.post(url, data=data, files=files)
-            result = request.json()
-            return result
+            body = form.body()
+            if PY2:
+                if not isinstance(url, bytes):
+                    url = url.encode('utf-8')
+                request = urllib.request.Request(url)
+                request.add_data(body)
+            else:
+                request = urllib.request.Request(url, data=body, method='POST')
+            request.add_header('Content-Type', form.get_content_type())
+            request.add_header('Content-Length', str(len(body)))
+            request.add_header('Accept-Encoding', 'gzip, deflate')
+            f = self._opener.open(request)
+            result = f.read()
+            if f.headers.get('content-encoding', None) == 'gzip':
+                result = gzip.GzipFile(fileobj=BytesIO(result)).read()
+            result = result.decode('utf-8')
+            return json.loads(result)
         except urllib.error.HTTPError as e:
             if self.DEBUG:
                 import webbrowser
@@ -114,15 +125,17 @@ class API(object):
             raise
 
     def _request(self, action, data=None):
-        form = {
-            'action': action
-        }
+        form = MultiPartForm()
+        form.add_field('action', action)
         if data:
-            form['data'] = json.dumps(data)
+            form.add_field('data', json.dumps(data))
         return self._json_request(self.url, form)
 
     def get_url(self, url):
-        return self._requests_session.get(url).content
+        request = urllib.request.Request(url, method='GET')
+        f = self._opener.open(request)
+        result = f.read()
+        return result
 
     def save_url(self, url, filename, overwrite=False):
         chunk_size = 16 * 1024
@@ -130,15 +143,21 @@ class API(object):
             dirname = os.path.dirname(filename)
             if dirname and not os.path.exists(dirname):
                 os.makedirs(dirname)
+            request = urllib.request.Request(url, method='GET')
             tmpname = filename + '.tmp'
             with open(tmpname, 'wb') as fd:
-                r = self._requests_session.get(url)
-                for chunk in iter(lambda: r.read(chunk_size), b''):
+                u = self._opener.open(request)
+                for chunk in iter(lambda: u.read(chunk_size), b''):
                     fd.write(chunk)
             shutil.move(tmpname, filename)
 
+
     def upload_chunks(self, url, filename, data=None, silent=False):
-        data = self._json_request(url, data)
+        form = MultiPartForm()
+        if data:
+            for key in data:
+                form.add_field(key, data[key])
+        data = self._json_request(url, form)
 
         def full_url(path):
             if path.startswith('/'):
@@ -159,20 +178,16 @@ class API(object):
                 resume_offset = 0
             chunk = f.read(CHUNK_SIZE)
             fname = os.path.basename(filename)
-            mime_type = mimetypes.guess_type(fname)[0] or 'application/octet-stream'
             if not isinstance(fname, bytes):
                 fname = fname.encode('utf-8')
             while chunk:
-                meta = {
-                    'offset': str(done)
-                }
+                form = MultiPartForm()
+                form.add_file('chunk', fname, chunk)
                 if len(chunk) < CHUNK_SIZE or f.tell() == fsize:
-                    meta['done'] = '1'
-                files = [
-                    ('chunk', (fname, chunk, mime_type))
-                ]
+                    form.add_field('done', '1')
+                form.add_field('offset', str(done))
                 try:
-                    data = self._json_request(uploadUrl, meta, files=files)
+                    data = self._json_request(uploadUrl, form)
                 except KeyboardInterrupt:
                     if not slient:
                         print("\ninterrupted by user.")
diff --git a/ox/web/imdb.py b/ox/web/imdb.py
index c9844fa..dffb6e4 100644
--- a/ox/web/imdb.py
+++ b/ox/web/imdb.py
@@ -552,7 +552,7 @@ class Imdb(SiteParser):
         metadata = self.get_page_data('keywords')
         keywords = get_keywords(metadata)
         if keywords:
-            self['keyword'] = keywords
+            self['keywords'] = keywords
 
         if 'summary' not in self and 'storyline' in self:
             self['summary'] = self.pop('storyline')
diff --git a/requirements.txt b/requirements.txt
index 4e7d966..51c3f99 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,3 @@
 chardet
 six>=1.5.2
 lxml
-requests