diff --git a/.travis.yml b/.travis.yml
index 95635ed5..ee8c6b9b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,10 @@ matrix:
       env: TOXENV=py35
     - python: "3.6"
       env: TOXENV=py36
+    - python: "3.7"
+      dist: xenial
+      sudo: required
+      env: TOXENV=py37
     - python: "pypy2.7-5.8.0"
       env: TOXENV=pypy
     - python: "pypy3.5-5.8.0"
diff --git a/apprise/plugins/NotifyTwitter/tweepy/__init__.py b/apprise/plugins/NotifyTwitter/tweepy/__init__.py
index 6b2575d2..3466d0bc 100644
--- a/apprise/plugins/NotifyTwitter/tweepy/__init__.py
+++ b/apprise/plugins/NotifyTwitter/tweepy/__init__.py
@@ -5,7 +5,7 @@
 """
 Tweepy Twitter API library
 """
-__version__ = '3.5.0'
+__version__ = '3.6.0'
 __author__ = 'Joshua Roesslein'
 __license__ = 'MIT'
 
diff --git a/apprise/plugins/NotifyTwitter/tweepy/api.py b/apprise/plugins/NotifyTwitter/tweepy/api.py
index 6f970842..22696b70 100644
--- a/apprise/plugins/NotifyTwitter/tweepy/api.py
+++ b/apprise/plugins/NotifyTwitter/tweepy/api.py
@@ -94,34 +94,35 @@ class API(object):
         )
 
     def statuses_lookup(self, id_, include_entities=None,
-                        trim_user=None, map_=None):
+                        trim_user=None, map_=None, tweet_mode=None):
         return self._statuses_lookup(list_to_csv(id_), include_entities,
-                                     trim_user, map_)
+                                     trim_user, map_, tweet_mode)
 
     @property
     def _statuses_lookup(self):
         """ :reference: https://dev.twitter.com/rest/reference/get/statuses/lookup
-            :allowed_param:'id', 'include_entities', 'trim_user', 'map'
+            :allowed_param:'id', 'include_entities', 'trim_user', 'map', 'tweet_mode'
         """
         return bind_api(
             api=self,
             path='/statuses/lookup.json',
             payload_type='status', payload_list=True,
-            allowed_param=['id', 'include_entities', 'trim_user', 'map'],
+            allowed_param=['id', 'include_entities', 'trim_user', 'map', 'tweet_mode'],
             require_auth=True
         )
 
     @property
     def user_timeline(self):
         """ :reference: https://dev.twitter.com/rest/reference/get/statuses/user_timeline
-            :allowed_param:'id', 'user_id', 'screen_name', 'since_id'
+            :allowed_param:'id', 'user_id', 'screen_name', 'since_id', 'max_id', 'count', 'include_rts', 'trim_user', 'exclude_replies'
         """
         return bind_api(
             api=self,
             path='/statuses/user_timeline.json',
             payload_type='status', payload_list=True,
             allowed_param=['id', 'user_id', 'screen_name', 'since_id',
-                           'max_id', 'count', 'include_rts']
+                           'max_id', 'count', 'include_rts', 'trim_user',
+                           'exclude_replies']
         )
 
     @property
@@ -177,7 +178,7 @@ class API(object):
 
     def update_status(self, *args, **kwargs):
         """ :reference: https://dev.twitter.com/rest/reference/post/statuses/update
-            :allowed_param:'status', 'in_reply_to_status_id', 'lat', 'long', 'source', 'place_id', 'display_coordinates', 'media_ids'
+            :allowed_param:'status', 'in_reply_to_status_id', 'in_reply_to_status_id_str', 'auto_populate_reply_metadata', 'lat', 'long', 'source', 'place_id', 'display_coordinates', 'media_ids'
         """
         post_data = {}
         media_ids = kwargs.pop("media_ids", None)
@@ -189,7 +190,7 @@ class API(object):
             path='/statuses/update.json',
             method='POST',
             payload_type='status',
-            allowed_param=['status', 'in_reply_to_status_id', 'lat', 'long', 'source', 'place_id', 'display_coordinates'],
+            allowed_param=['status', 'in_reply_to_status_id', 'in_reply_to_status_id_str', 'auto_populate_reply_metadata', 'lat', 'long', 'source', 'place_id', 'display_coordinates'],
             require_auth=True
         )(post_data=post_data, *args, **kwargs)
 
@@ -198,7 +199,7 @@ class API(object):
             :allowed_param:
         """
         f = kwargs.pop('file', None)
-        headers, post_data = API._pack_image(filename, 3072, form_field='media', f=f)
+        headers, post_data = API._pack_image(filename, 4883, form_field='media', f=f)
         kwargs.update({'headers': headers, 'post_data': post_data})
 
         return bind_api(
@@ -213,7 +214,7 @@ class API(object):
 
     def update_with_media(self, filename, *args, **kwargs):
         """ :reference: https://dev.twitter.com/rest/reference/post/statuses/update_with_media
-            :allowed_param:'status', 'possibly_sensitive', 'in_reply_to_status_id', 'lat', 'long', 'place_id', 'display_coordinates'
+            :allowed_param:'status', 'possibly_sensitive', 'in_reply_to_status_id', 'in_reply_to_status_id_str', 'auto_populate_reply_metadata', 'lat', 'long', 'place_id', 'display_coordinates'
         """
         f = kwargs.pop('file', None)
         headers, post_data = API._pack_image(filename, 3072, form_field='media[]', f=f)
@@ -225,8 +226,8 @@ class API(object):
             method='POST',
             payload_type='status',
             allowed_param=[
-                'status', 'possibly_sensitive', 'in_reply_to_status_id', 'lat', 'long',
-                'place_id', 'display_coordinates'
+                'status', 'possibly_sensitive', 'in_reply_to_status_id', 'in_reply_to_status_id_str',
+                'auto_populate_reply_metadata', 'lat', 'long', 'place_id', 'display_coordinates'
             ],
             require_auth=True
         )(*args, **kwargs)
@@ -259,6 +260,20 @@ class API(object):
             require_auth=True
         )
 
+    @property
+    def unretweet(self):
+        """ :reference: https://dev.twitter.com/rest/reference/post/statuses/unretweet/%3Aid
+            :allowed_param:'id'
+        """
+        return bind_api(
+            api=self,
+            path='/statuses/unretweet/{id}.json',
+            method='POST',
+            payload_type='status',
+            allowed_param=['id'],
+            require_auth=True
+        )
+
     @property
     def retweets(self):
         """ :reference: https://dev.twitter.com/rest/reference/get/statuses/retweets/%3Aid
@@ -331,6 +346,7 @@ class API(object):
             path='/users/lookup.json',
             payload_type='user', payload_list=True,
             method='POST',
+            allowed_param=['user_id', 'screen_name', 'include_entities']
         )
 
     def me(self):
@@ -487,7 +503,7 @@ class API(object):
     @property
     def show_friendship(self):
         """ :reference: https://dev.twitter.com/rest/reference/get/friendships/show
-            :allowed_param:'source_id', 'source_screen_name'
+            :allowed_param:'source_id', 'source_screen_name', 'target_id', 'target_screen_name'
         """
         return bind_api(
             api=self,
@@ -661,24 +677,6 @@ class API(object):
             require_auth=True
         )
 
-    @property
-    def update_profile_colors(self):
-        """ :reference: https://dev.twitter.com/docs/api/1.1/post/account/update_profile_colors
-            :allowed_param:'profile_background_color', 'profile_text_color',
-             'profile_link_color', 'profile_sidebar_fill_color',
-             'profile_sidebar_border_color'],
-        """
-        return bind_api(
-            api=self,
-            path='/account/update_profile_colors.json',
-            method='POST',
-            payload_type='user',
-            allowed_param=['profile_background_color', 'profile_text_color',
-                           'profile_link_color', 'profile_sidebar_fill_color',
-                           'profile_sidebar_border_color'],
-            require_auth=True
-        )
-
     def update_profile_image(self, filename, file_=None):
         """ :reference: https://dev.twitter.com/rest/reference/post/account/update_profile_image
             :allowed_param:'include_entities', 'skip_status'
@@ -725,14 +723,14 @@ class API(object):
     @property
     def update_profile(self):
         """ :reference: https://dev.twitter.com/rest/reference/post/account/update_profile
-            :allowed_param:'name', 'url', 'location', 'description'
+            :allowed_param:'name', 'url', 'location', 'description', 'profile_link_color'
         """
         return bind_api(
             api=self,
             path='/account/update_profile.json',
             method='POST',
             payload_type='user',
-            allowed_param=['name', 'url', 'location', 'description'],
+            allowed_param=['name', 'url', 'location', 'description', 'profile_link_color'],
             require_auth=True
         )
 
@@ -804,6 +802,46 @@ class API(object):
             require_auth=True
         )
 
+    @property
+    def mutes_ids(self):
+        """ :reference: https://dev.twitter.com/rest/reference/get/mutes/users/ids """
+        return bind_api(
+            api=self,
+            path='/mutes/users/ids.json',
+            payload_type='json',
+            require_auth=True
+        )
+
+    @property
+    def create_mute(self):
+        """ :reference: https://dev.twitter.com/rest/reference/post/mutes/users/create
+            :allowed_param:'id', 'user_id', 'screen_name'
+        """
+        return bind_api(
+            api=self,
+            path='/mutes/users/create.json',
+            method='POST',
+            payload_type='user',
+            allowed_param=['id', 'user_id', 'screen_name'],
+            require_auth=True
+        )
+
+    @property
+    def destroy_mute(self):
+        """ :reference: https://dev.twitter.com/rest/reference/post/mutes/users/destroy
+            :allowed_param:'id', 'user_id', 'screen_name'
+        """
+        return bind_api(
+            api=self,
+            path='/mutes/users/destroy.json',
+            method='POST',
+            payload_type='user',
+            allowed_param=['id', 'user_id', 'screen_name'],
+            require_auth=True
+        )
+
+
+
     @property
     def blocks(self):
         """ :reference: https://dev.twitter.com/rest/reference/get/blocks/list
@@ -1208,7 +1246,7 @@ class API(object):
         """ :reference: https://dev.twitter.com/rest/reference/get/search/tweets
             :allowed_param:'q', 'lang', 'locale', 'since_id', 'geocode',
              'max_id', 'since', 'until', 'result_type', 'count',
-              'include_entities', 'from', 'to', 'source']
+              'include_entities', 'from', 'to', 'source'
         """
         return bind_api(
             api=self,
@@ -1326,7 +1364,7 @@ class API(object):
             filename = filename.encode("utf-8")
 
         BOUNDARY = b'Tw3ePy'
-        body = list()
+        body = []
         body.append(b'--' + BOUNDARY)
         body.append('Content-Disposition: form-data; name="{0}";'
                     ' filename="{1}"'.format(form_field, filename)
diff --git a/apprise/plugins/NotifyTwitter/tweepy/binder.py b/apprise/plugins/NotifyTwitter/tweepy/binder.py
index 42c3ad8f..e7dcf4b4 100644
--- a/apprise/plugins/NotifyTwitter/tweepy/binder.py
+++ b/apprise/plugins/NotifyTwitter/tweepy/binder.py
@@ -7,7 +7,7 @@ from __future__ import print_function
 import time
 import re
 
-from six.moves.urllib.parse import quote
+from six.moves.urllib.parse import quote, urlencode
 import requests
 
 import logging
@@ -15,6 +15,8 @@ import logging
 from .error import TweepError, RateLimitError, is_rate_limit_error_message
 from .utils import convert_to_utf8_str
 from .models import Model
+import six
+import sys
 
 
 re_path_template = re.compile('{\w+}')
@@ -104,7 +106,7 @@ def bind_api(**config):
 
                 self.session.params[k] = convert_to_utf8_str(arg)
 
-            log.info("PARAMS: %r", self.session.params)
+            log.debug("PARAMS: %r", self.session.params)
 
         def build_path(self):
             for variable in re_path_template.findall(self.path):
@@ -132,7 +134,7 @@ def bind_api(**config):
             # Query the cache if one is available
             # and this request uses a GET method.
             if self.use_cache and self.api.cache and self.method == 'GET':
-                cache_result = self.api.cache.get(url)
+                cache_result = self.api.cache.get('%s?%s' % (url, urlencode(self.session.params)))
                 # if cache result found and not expired, return it
                 if cache_result:
                     # must restore api reference
@@ -158,7 +160,7 @@ def bind_api(**config):
                                 sleep_time = self._reset_time - int(time.time())
                                 if sleep_time > 0:
                                     if self.wait_on_rate_limit_notify:
-                                        print("Rate limit reached. Sleeping for:", sleep_time)
+                                        log.warning("Rate limit reached. Sleeping for: %d" % sleep_time)
                                     time.sleep(sleep_time + 5)  # sleep for few extra sec
 
                 # if self.wait_on_rate_limit and self._reset_time is not None and \
@@ -166,10 +168,11 @@ def bind_api(**config):
                 #     sleep_time = self._reset_time - int(time.time())
                 #     if sleep_time > 0:
                 #         if self.wait_on_rate_limit_notify:
-                #             print("Rate limit reached. Sleeping for: " + str(sleep_time))
+                #             log.warning("Rate limit reached. Sleeping for: %d" % sleep_time)
                 #         time.sleep(sleep_time + 5)  # sleep for few extra sec
 
                 # Apply authentication
+                auth = None
                 if self.api.auth:
                     auth = self.api.auth.apply_auth()
 
@@ -186,8 +189,10 @@ def bind_api(**config):
                                                 auth=auth,
                                                 proxies=self.api.proxy)
                 except Exception as e:
-                    raise TweepError('Failed to send request: %s' % e)
+                    six.reraise(TweepError, TweepError('Failed to send request: %s' % e), sys.exc_info()[2])
+
                 rem_calls = resp.headers.get('x-rate-limit-remaining')
+
                 if rem_calls is not None:
                     self._remaining_calls = int(rem_calls)
                 elif isinstance(self._remaining_calls, int):
@@ -233,7 +238,7 @@ def bind_api(**config):
 
             # Store result into cache if one is available.
             if self.use_cache and self.api.cache and self.method == 'GET' and result:
-                self.api.cache.store(url, result)
+                self.api.cache.store('%s?%s' % (url, urlencode(self.session.params)), result)
 
             return result
 
diff --git a/apprise/plugins/NotifyTwitter/tweepy/cache.py b/apprise/plugins/NotifyTwitter/tweepy/cache.py
index 1d6cb562..8c287816 100644
--- a/apprise/plugins/NotifyTwitter/tweepy/cache.py
+++ b/apprise/plugins/NotifyTwitter/tweepy/cache.py
@@ -6,20 +6,16 @@ from __future__ import print_function
 
 import time
 import datetime
+import hashlib
 import threading
 import os
+import logging
 
 try:
     import cPickle as pickle
 except ImportError:
     import pickle
 
-try:
-    import hashlib
-except ImportError:
-    # python 2.4
-    import md5 as hashlib
-
 try:
     import fcntl
 except ImportError:
@@ -27,6 +23,7 @@ except ImportError:
     # TODO: use win32file
     pass
 
+log = logging.getLogger('tweepy.cache')
 
 class Cache(object):
     """Cache interface"""
@@ -157,7 +154,7 @@ class FileCache(Cache):
             self._lock_file = self._lock_file_win32
             self._unlock_file = self._unlock_file_win32
         else:
-            print('Warning! FileCache locking not supported on this system!')
+            log.warning('FileCache locking not supported on this system!')
             self._lock_file = self._lock_file_dummy
             self._unlock_file = self._unlock_file_dummy
 
diff --git a/apprise/plugins/NotifyTwitter/tweepy/models.py b/apprise/plugins/NotifyTwitter/tweepy/models.py
index 71fefade..4b2a66c5 100644
--- a/apprise/plugins/NotifyTwitter/tweepy/models.py
+++ b/apprise/plugins/NotifyTwitter/tweepy/models.py
@@ -93,6 +93,8 @@ class Status(Model):
                     setattr(status, 'source_url', None)
             elif k == 'retweeted_status':
                 setattr(status, k, Status.parse(api, v))
+            elif k == 'quoted_status':
+                setattr(status, k, Status.parse(api, v))
             elif k == 'place':
                 if v is not None:
                     setattr(status, k, Place.parse(api, v))
diff --git a/apprise/plugins/NotifyTwitter/tweepy/parsers.py b/apprise/plugins/NotifyTwitter/tweepy/parsers.py
index a2ee4e87..371ad5f9 100644
--- a/apprise/plugins/NotifyTwitter/tweepy/parsers.py
+++ b/apprise/plugins/NotifyTwitter/tweepy/parsers.py
@@ -54,11 +54,11 @@ class JSONParser(Parser):
             raise TweepError('Failed to parse JSON payload: %s' % e)
 
         needs_cursors = 'cursor' in method.session.params
-        if needs_cursors and isinstance(json, dict):
-            if 'previous_cursor' in json:
-                if 'next_cursor' in json:
-                    cursors = json['previous_cursor'], json['next_cursor']
-                    return json, cursors
+        if needs_cursors and isinstance(json, dict) \
+                and 'previous_cursor' in json \
+                and 'next_cursor' in json:
+            cursors = json['previous_cursor'], json['next_cursor']
+            return json, cursors
         else:
             return json
 
diff --git a/apprise/plugins/NotifyTwitter/tweepy/streaming.py b/apprise/plugins/NotifyTwitter/tweepy/streaming.py
index dee9779e..0a72a4ca 100644
--- a/apprise/plugins/NotifyTwitter/tweepy/streaming.py
+++ b/apprise/plugins/NotifyTwitter/tweepy/streaming.py
@@ -9,6 +9,7 @@ from __future__ import absolute_import, print_function
 import logging
 import re
 import requests
+import sys
 from requests.exceptions import Timeout
 from threading import Thread
 from time import sleep
@@ -161,6 +162,7 @@ class ReadBuffer(object):
                 return self._pop(length)
             read_len = max(self._chunk_size, length - len(self._buffer))
             self._buffer += self._stream.read(read_len)
+        return six.b('')
 
     def read_line(self, sep=six.b('\n')):
         """Read the data stream until a given separator is found (default \n)
@@ -177,6 +179,7 @@ class ReadBuffer(object):
             else:
                 start = len(self._buffer)
             self._buffer += self._stream.read(self._chunk_size)
+        return six.b('')
 
     def _pop(self, length):
         r = self._buffer[:length]
@@ -217,6 +220,9 @@ class Stream(object):
         self.body = None
         self.retry_time = self.retry_time_start
         self.snooze_time = self.snooze_time_step
+        
+        # Example: proxies = {'http': 'http://localhost:1080', 'https': 'http://localhost:1080'}
+        self.proxies = options.get("proxies")
 
     def new_session(self):
         self.session = requests.Session()
@@ -230,7 +236,7 @@ class Stream(object):
         # Connect and process the stream
         error_counter = 0
         resp = None
-        exception = None
+        exc_info = None
         while self.running:
             if self.retry_count is not None:
                 if error_counter > self.retry_count:
@@ -244,7 +250,8 @@ class Stream(object):
                                             timeout=self.timeout,
                                             stream=True,
                                             auth=auth,
-                                            verify=self.verify)
+                                            verify=self.verify,
+                                            proxies = self.proxies)
                 if resp.status_code != 200:
                     if self.listener.on_error(resp.status_code) is False:
                         break
@@ -267,7 +274,7 @@ class Stream(object):
                 # If it's not time out treat it like any other exception
                 if isinstance(exc, ssl.SSLError):
                     if not (exc.args and 'timed out' in str(exc.args[0])):
-                        exception = exc
+                        exc_info = sys.exc_info()
                         break
                 if self.listener.on_timeout() is False:
                     break
@@ -277,7 +284,7 @@ class Stream(object):
                 self.snooze_time = min(self.snooze_time + self.snooze_time_step,
                                        self.snooze_time_cap)
             except Exception as exc:
-                exception = exc
+                exc_info = sys.exc_info()
                 # any other exception is fatal, so kill loop
                 break
 
@@ -288,10 +295,10 @@ class Stream(object):
 
         self.new_session()
 
-        if exception:
+        if exc_info:
             # call a handler first so that the exception can be logged.
-            self.listener.on_exception(exception)
-            raise exception
+            self.listener.on_exception(exc_info[1])
+            six.reraise(*exc_info)
 
     def _data(self, data):
         if self.listener.on_data(data) is False:
@@ -310,17 +317,18 @@ class Stream(object):
         while self.running and not resp.raw.closed:
             length = 0
             while not resp.raw.closed:
-                line = buf.read_line().strip()
-                if not line:
+                line = buf.read_line()
+                stripped_line = line.strip() if line else line # line is sometimes None so we need to check here
+                if not stripped_line:
                     self.listener.keep_alive()  # keep-alive new lines are expected
-                elif line.isdigit():
-                    length = int(line)
+                elif stripped_line.isdigit():
+                    length = int(stripped_line)
                     break
                 else:
                     raise TweepError('Expecting length, unexpected value found')
 
             next_status_obj = buf.read_len(length)
-            if self.running:
+            if self.running and next_status_obj:
                 self._data(next_status_obj)
 
             # # Note: keep-alive newlines might be inserted before each length value.
@@ -352,9 +360,9 @@ class Stream(object):
         if resp.raw.closed:
             self.on_closed(resp)
 
-    def _start(self, async):
+    def _start(self, is_async):
         self.running = True
-        if async:
+        if is_async:
             self._thread = Thread(target=self._run)
             self._thread.start()
         else:
@@ -370,7 +378,7 @@ class Stream(object):
                    replies=None,
                    track=None,
                    locations=None,
-                   async=False,
+                   is_async=False,
                    encoding='utf8'):
         self.session.params = {'delimited': 'length'}
         if self.running:
@@ -391,34 +399,36 @@ class Stream(object):
         if track:
             self.session.params['track'] = u','.join(track).encode(encoding)
 
-        self._start(async)
+        self._start(is_async)
 
-    def firehose(self, count=None, async=False):
+    def firehose(self, count=None, is_async=False):
         self.session.params = {'delimited': 'length'}
         if self.running:
             raise TweepError('Stream object already connected!')
         self.url = '/%s/statuses/firehose.json' % STREAM_VERSION
         if count:
             self.url += '&count=%s' % count
-        self._start(async)
+        self._start(is_async)
 
-    def retweet(self, async=False):
+    def retweet(self, is_async=False):
         self.session.params = {'delimited': 'length'}
         if self.running:
             raise TweepError('Stream object already connected!')
         self.url = '/%s/statuses/retweet.json' % STREAM_VERSION
-        self._start(async)
+        self._start(is_async)
 
-    def sample(self, async=False, languages=None):
+    def sample(self, is_async=False, languages=None, stall_warnings=False):
         self.session.params = {'delimited': 'length'}
         if self.running:
             raise TweepError('Stream object already connected!')
         self.url = '/%s/statuses/sample.json' % STREAM_VERSION
         if languages:
             self.session.params['language'] = ','.join(map(str, languages))
-        self._start(async)
+        if stall_warnings:
+            self.session.params['stall_warnings'] = 'true'
+        self._start(is_async)
 
-    def filter(self, follow=None, track=None, async=False, locations=None,
+    def filter(self, follow=None, track=None, is_async=False, locations=None,
                stall_warnings=False, languages=None, encoding='utf8', filter_level=None):
         self.body = {}
         self.session.headers['Content-type'] = "application/x-www-form-urlencoded"
@@ -439,13 +449,13 @@ class Stream(object):
         if languages:
             self.body['language'] = u','.join(map(str, languages))
         if filter_level:
-            self.body['filter_level'] = unicode(filter_level, encoding)
+            self.body['filter_level'] = filter_level.encode(encoding)
         self.session.params = {'delimited': 'length'}
         self.host = 'stream.twitter.com'
-        self._start(async)
+        self._start(is_async)
 
     def sitestream(self, follow, stall_warnings=False,
-                   with_='user', replies=False, async=False):
+                   with_='user', replies=False, is_async=False):
         self.body = {}
         if self.running:
             raise TweepError('Stream object already connected!')
@@ -458,7 +468,7 @@ class Stream(object):
             self.body['with'] = with_
         if replies:
             self.body['replies'] = replies
-        self._start(async)
+        self._start(is_async)
 
     def disconnect(self):
         if self.running is False:
diff --git a/apprise/plugins/NotifyTwitter/tweepy/utils.py b/apprise/plugins/NotifyTwitter/tweepy/utils.py
index 36d34025..e3843a73 100644
--- a/apprise/plugins/NotifyTwitter/tweepy/utils.py
+++ b/apprise/plugins/NotifyTwitter/tweepy/utils.py
@@ -7,7 +7,6 @@ from __future__ import print_function
 from datetime import datetime
 
 import six
-from six.moves.urllib.parse import quote
 
 from email.utils import parsedate
 
@@ -41,14 +40,7 @@ def import_simplejson():
     try:
         import simplejson as json
     except ImportError:
-        try:
-            import json  # Python 2.6+
-        except ImportError:
-            try:
-                # Google App Engine
-                from django.utils import simplejson as json
-            except ImportError:
-                raise ImportError("Can't load a json library")
+        import json
 
     return json
 
diff --git a/tox.ini b/tox.ini
index efc45ba8..89d2c50f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py27,py34,py35,py36,pypy,pypy3,coverage-report
+envlist = py27,py34,py35,py36,py37,pypy,pypy3,coverage-report
 
 
 [testenv]
@@ -37,6 +37,12 @@ deps=
    -r{toxinidir}/dev-requirements.txt
 commands = coverage run --parallel -m pytest {posargs}
 
+[testenv:py37]
+deps=
+   -r{toxinidir}/requirements.txt
+   -r{toxinidir}/dev-requirements.txt
+commands = coverage run --parallel -m pytest {posargs}
+
 [testenv:pypy]
 deps=
    -r{toxinidir}/requirements.txt