diff --git a/sphinx/builders/linkcheck.py b/sphinx/builders/linkcheck.py
index 8c0f5040d..484bd95e3 100644
--- a/sphinx/builders/linkcheck.py
+++ b/sphinx/builders/linkcheck.py
@@ -13,11 +13,12 @@ import re
 import socket
 import threading
 from os import path
-from urllib2 import build_opener, unquote, Request, \
-    HTTPError, HTTPRedirectHandler
-from HTMLParser import HTMLParser, HTMLParseError
 
 from six.moves import queue
+from six.moves.urllib.request import build_opener, Request, HTTPRedirectHandler
+from six.moves.urllib.parse import unquote
+from six.moves.urllib.error import HTTPError
+from six.moves.html_parser import HTMLParser, HTMLParseError
 from docutils import nodes
 
 from sphinx.builders import Builder
diff --git a/sphinx/ext/intersphinx.py b/sphinx/ext/intersphinx.py
index a878f1769..772b1e7f3 100644
--- a/sphinx/ext/intersphinx.py
+++ b/sphinx/ext/intersphinx.py
@@ -27,12 +27,12 @@
 import time
 import zlib
 import codecs
-import urllib2
 import posixpath
 from os import path
 import re
 
 from six import iteritems
+from six.moves.urllib import request
 from docutils import nodes
 from docutils.utils import relative_path
 
@@ -41,14 +41,14 @@ from sphinx.builders.html import INVENTORY_FILENAME
 from sphinx.util.pycompat import b
 
 
-handlers = [urllib2.ProxyHandler(), urllib2.HTTPRedirectHandler(),
-            urllib2.HTTPHandler()]
+handlers = [request.ProxyHandler(), request.HTTPRedirectHandler(),
+            request.HTTPHandler()]
 try:
-    handlers.append(urllib2.HTTPSHandler)
+    handlers.append(request.HTTPSHandler)
 except AttributeError:
     pass
 
-urllib2.install_opener(urllib2.build_opener(*handlers))
+request.install_opener(request.build_opener(*handlers))
 
 UTF8StreamReader = codecs.lookup('utf-8')[2]
 
@@ -130,7 +130,7 @@ def fetch_inventory(app, uri, inv):
     join = localuri and path.join or posixpath.join
     try:
         if inv.find('://') != -1:
-            f = urllib2.urlopen(inv)
+            f = request.urlopen(inv)
         else:
             f = open(path.join(app.srcdir, inv), 'rb')
     except Exception as err:
diff --git a/sphinx/util/jsdump.py b/sphinx/util/jsdump.py
index 41ef96c01..e75f9f848 100644
--- a/sphinx/util/jsdump.py
+++ b/sphinx/util/jsdump.py
@@ -13,7 +13,7 @@
 import re
 
 import six
-from six import iteritems
+from six import iteritems, integer_types
 
 from sphinx.util.pycompat import u
 
@@ -87,7 +87,7 @@ def dumps(obj, key=False):
         return 'null'
     elif obj is True or obj is False:
         return obj and 'true' or 'false'
-    elif isinstance(obj, (int, long, float)):
+    elif isinstance(obj, integer_types + (float,)):
         return str(obj)
     elif isinstance(obj, dict):
         return '{%s}' % ','.join('%s:%s' % (
diff --git a/tests/test_build_html.py b/tests/test_build_html.py
index a011d1065..955025b25 100644
--- a/tests/test_build_html.py
+++ b/tests/test_build_html.py
@@ -11,10 +11,10 @@
 
 import os
 import re
-import htmlentitydefs
 
 import six
 from six import iteritems
+from six.moves import html_entities
 
 try:
     import pygments
@@ -347,7 +347,7 @@ def test_html(app):
 
     for fname, paths in iteritems(HTML_XPATH):
         parser = NslessParser()
-        parser.entity.update(htmlentitydefs.entitydefs)
+        parser.entity.update(html_entities.entitydefs)
         fp = open(os.path.join(app.outdir, fname), 'rb')
         try:
             etree = ET.parse(fp, parser)