diff --git a/deluge/ui/web/auth.py b/deluge/ui/web/auth.py
index 93cf91b8e..55325542d 100644
--- a/deluge/ui/web/auth.py
+++ b/deluge/ui/web/auth.py
@@ -15,9 +15,10 @@ from datetime import datetime, timedelta
 from email.utils import formatdate
 from functools import reduce
 
+from twisted.internet.task import LoopingCall
+
 from deluge import component
 from deluge.common import utf8_encoded
-from twisted.internet.task import LoopingCall
 
 log = logging.getLogger(__name__)
 
diff --git a/setup.cfg b/setup.cfg
index 030ef6913..ae1a1b9fb 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -15,10 +15,9 @@ includes = glib, gio, cairo, pango, pangocairo, atk, gobject, gtk.keysyms,
 frameworks = CoreFoundation, Foundation, AppKit
 
 [isort]
-default_section=THIRDPARTY
 known_standard_library=unicodedata
-known_third_party=pygtk,gtk,gobject,gtk.gdk,pango,cairo,pangocairo,twisted,pytest,OpenSSL,pkg_resources,chardet
-known_first_party=msgfmt,
+known_third_party=pygtk,gtk,gobject,gtk.gdk,pango,cairo,pangocairo,twisted,pytest,OpenSSL,pkg_resources,chardet,bbfreeze,win32verstamp
+known_first_party=msgfmt
 order_by_type=true
 line_length=120
 not_skip=__init__.py
diff --git a/tox.ini b/tox.ini
index caf0de4ee..91b976e64 100644
--- a/tox.ini
+++ b/tox.ini
@@ -81,7 +81,7 @@ commands = {[testenv:pydef]commands}
 [testenv:isort]
 deps =
     {[testenv]deps}
-    isort>=4.0.0
+    isort>=4.2.0
 whitelist_externals =
     {[testenv]whitelist_externals}
     isort