diff --git a/deluge/core/core.py b/deluge/core/core.py
index 451b9a88d..7125a8093 100644
--- a/deluge/core/core.py
+++ b/deluge/core/core.py
@@ -472,7 +472,7 @@ class Core(component.Component):
                         torrent[0], torrent[1], torrent[2], save_state=idx == last_index,
                     )
                 except AddTorrentError as ex:
-                    log.warn('Error when adding torrent: %s', ex)
+                    log.warning('Error when adding torrent: %s', ex)
                     errors.append(ex)
             defer.returnValue(errors)
         return task.deferLater(reactor, 0, add_torrents)
@@ -578,7 +578,7 @@ class Core(component.Component):
             # Save the session state
             self.torrentmanager.save_state()
             if errors:
-                log.warn('Failed to remove %d of %d torrents.', len(errors), len(torrent_ids))
+                log.warning('Failed to remove %d of %d torrents.', len(errors), len(torrent_ids))
             return errors
         return task.deferLater(reactor, 0, do_remove_torrents)
 
diff --git a/deluge/core/rpcserver.py b/deluge/core/rpcserver.py
index ccbb03d3d..146f39c3e 100644
--- a/deluge/core/rpcserver.py
+++ b/deluge/core/rpcserver.py
@@ -139,7 +139,7 @@ class DelugeRPCProtocol(DelugeTransferProtocol):
         try:
             self.transfer_message(data)
         except Exception as ex:
-            log.warn('Error occurred when sending message: %s.', ex)
+            log.warning('Error occurred when sending message: %s.', ex)
             log.exception(ex)
             raise
 
diff --git a/deluge/core/torrentmanager.py b/deluge/core/torrentmanager.py
index 62e1d2508..31e28b6a0 100644
--- a/deluge/core/torrentmanager.py
+++ b/deluge/core/torrentmanager.py
@@ -762,7 +762,7 @@ class TorrentManager(component.Component):
                     resume_data=resume_data.get(t_state.torrent_id),
                 )
             except AddTorrentError as ex:
-                log.warn('Error when adding torrent "%s" to session: %s', t_state.torrent_id, ex)
+                log.warning('Error when adding torrent "%s" to session: %s', t_state.torrent_id, ex)
             else:
                 deferreds.append(d)
 
@@ -1105,19 +1105,19 @@ class TorrentManager(component.Component):
     def on_alert_add_torrent(self, alert):
         """Alert handler for libtorrent add_torrent_alert"""
         if not alert.handle.is_valid():
-            log.warn('Torrent handle is invalid!')
+            log.warning('Torrent handle is invalid!')
             return
 
         try:
             torrent_id = str(alert.handle.info_hash())
         except RuntimeError as ex:
-            log.warn('Failed to get torrent id from handle: %s', ex)
+            log.warning('Failed to get torrent id from handle: %s', ex)
             return
 
         try:
             add_async_params = self.torrents_loading.pop(torrent_id)
         except KeyError as ex:
-            log.warn('Torrent id not in torrents loading list: %s', ex)
+            log.warning('Torrent id not in torrents loading list: %s', ex)
             return
 
         self.add_async_callback(alert.handle, *add_async_params)
diff --git a/deluge/log.py b/deluge/log.py
index fe61ff3da..ba0af4c8b 100644
--- a/deluge/log.py
+++ b/deluge/log.py
@@ -218,7 +218,7 @@ def tweak_logging_levels():
     if not os.path.isfile(logging_config_file):
         return
     log = logging.getLogger(__name__)
-    log.warn(
+    log.warning(
         'logging.conf found! tweaking logging levels from %s',
         logging_config_file,
     )
@@ -230,7 +230,7 @@ def tweak_logging_levels():
             if level not in levels:
                 continue
 
-            log.warn('Setting logger "%s" to logging level "%s"', name, level)
+            log.warning('Setting logger "%s" to logging level "%s"', name, level)
             set_logger_level(level, name)
 
 
diff --git a/deluge/pluginmanagerbase.py b/deluge/pluginmanagerbase.py
index 439ebf5ed..624b06b05 100644
--- a/deluge/pluginmanagerbase.py
+++ b/deluge/pluginmanagerbase.py
@@ -243,7 +243,7 @@ class PluginManagerBase(object):
         cont_lines = []
         # Missing plugin info
         if not self.pkg_env[name]:
-            log.warn('Failed to retrive info for plugin: %s', name)
+            log.warning('Failed to retrive info for plugin: %s', name)
             for k in info:
                 info[k] = 'not available'
             return info
diff --git a/deluge/plugins/Execute/deluge/plugins/execute/core.py b/deluge/plugins/Execute/deluge/plugins/execute/core.py
index 2dbf1c64d..ed35a32bf 100644
--- a/deluge/plugins/Execute/deluge/plugins/execute/core.py
+++ b/deluge/plugins/Execute/deluge/plugins/execute/core.py
@@ -106,11 +106,11 @@ class Core(CorePluginBase):
         def log_error(result, command):
             (stdout, stderr, exit_code) = result
             if exit_code:
-                log.warn('Command "%s" failed with exit code %d', command, exit_code)
+                log.warning('Command "%s" failed with exit code %d', command, exit_code)
                 if stdout:
-                    log.warn('stdout: %s', stdout)
+                    log.warning('stdout: %s', stdout)
                 if stderr:
-                    log.warn('stderr: %s', stderr)
+                    log.warning('stderr: %s', stderr)
 
         # Go through and execute all the commands
         for command in self.config['commands']:
diff --git a/deluge/plugins/WebUi/deluge/plugins/webui/core.py b/deluge/plugins/WebUi/deluge/plugins/webui/core.py
index 55d269cd6..72923a6f0 100644
--- a/deluge/plugins/WebUi/deluge/plugins/webui/core.py
+++ b/deluge/plugins/WebUi/deluge/plugins/webui/core.py
@@ -82,7 +82,7 @@ class Core(CorePluginBase):
         try:
             self.server.start()
         except CannotListenError as ex:
-            log.warn('Failed to start WebUI server: %s', ex)
+            log.warning('Failed to start WebUI server: %s', ex)
             raise
         return True
 
diff --git a/deluge/transfer.py b/deluge/transfer.py
index 23bf98290..c1859eb67 100644
--- a/deluge/transfer.py
+++ b/deluge/transfer.py
@@ -104,8 +104,8 @@ class DelugeTransferProtocol(Protocol, object):
             # Remove the header from the buffer
             self._buffer = self._buffer[MESSAGE_HEADER_SIZE:]
         except Exception as ex:
-            log.warn('Error occurred when parsing message header: %s.', ex)
-            log.warn('This version of Deluge cannot communicate with the sender of this data.')
+            log.warning('Error occurred when parsing message header: %s.', ex)
+            log.warning('This version of Deluge cannot communicate with the sender of this data.')
             self._message_length = 0
             self._buffer = b''
 
@@ -119,7 +119,7 @@ class DelugeTransferProtocol(Protocol, object):
         try:
             self.message_received(rencode.loads(zlib.decompress(data), decode_utf8=True))
         except Exception as ex:
-            log.warn('Failed to decompress (%d bytes) and load serialized data with rencode: %s', len(data), ex)
+            log.warning('Failed to decompress (%d bytes) and load serialized data with rencode: %s', len(data), ex)
 
     def get_bytes_recv(self):
         """
diff --git a/deluge/ui/client.py b/deluge/ui/client.py
index ac9b9f99a..64db4ce06 100644
--- a/deluge/ui/client.py
+++ b/deluge/ui/client.py
@@ -133,7 +133,7 @@ class DelugeRPCProtocol(DelugeTransferProtocol):
                     exception_cls = getattr(error, request[2])
                     exception = exception_cls(*request[3], **request[4])
                 except TypeError:
-                    log.warn('Received invalid RPC_ERROR (Old daemon?): %s', request[2])
+                    log.warning('Received invalid RPC_ERROR (Old daemon?): %s', request[2])
                     return
 
                 # Ideally we would chain the deferreds instead of instance
@@ -188,7 +188,7 @@ class DelugeRPCProtocol(DelugeTransferProtocol):
             # Send the request in a tuple because multiple requests can be sent at once
             self.transfer_message((request.format_message(),))
         except Exception as ex:
-            log.warn('Error occurred when sending message: %s', ex)
+            log.warning('Error occurred when sending message: %s', ex)
 
 
 class DelugeRPCClientFactory(ClientFactory):
diff --git a/deluge/ui/console/cmdline/command.py b/deluge/ui/console/cmdline/command.py
index 262182bfe..0b59aca7b 100644
--- a/deluge/ui/console/cmdline/command.py
+++ b/deluge/ui/console/cmdline/command.py
@@ -108,7 +108,7 @@ class Commander(object):
             return
         except OptionParserError as ex:
             import traceback
-            log.warn('Error parsing command "%s":  %s', args, ex)
+            log.warning('Error parsing command "%s":  %s', args, ex)
             self.write('{!error!} %s' % ex)
             parser.print_help()
             return
diff --git a/deluge/ui/console/cmdline/commands/status.py b/deluge/ui/console/cmdline/commands/status.py
index 5f6c3fe94..2f34ede95 100644
--- a/deluge/ui/console/cmdline/commands/status.py
+++ b/deluge/ui/console/cmdline/commands/status.py
@@ -51,7 +51,7 @@ class Command(BaseCommand):
             self.torrents = status
 
         def on_torrents_status_fail(reason):
-            log.warn('Failed to retrieve session status: %s', reason)
+            log.warning('Failed to retrieve session status: %s', reason)
             self.torrents = -2
 
         deferreds = []
diff --git a/deluge/ui/console/modes/basemode.py b/deluge/ui/console/modes/basemode.py
index a947b509d..a5e85e862 100644
--- a/deluge/ui/console/modes/basemode.py
+++ b/deluge/ui/console/modes/basemode.py
@@ -330,7 +330,7 @@ def move_cursor(screen, row, col):
         screen.move(row, col)
     except curses.error as ex:
         import traceback
-        log.warn(
+        log.warning(
             'Error on screen.move(%s, %s): (curses.LINES: %s, curses.COLS: %s) Error: %s\nStack: %s',
             row, col, curses.LINES, curses.COLS, ex, ''.join(traceback.format_stack()),
         )
diff --git a/deluge/ui/console/utils/colors.py b/deluge/ui/console/utils/colors.py
index ac1a50c77..3de338b1a 100644
--- a/deluge/ui/console/utils/colors.py
+++ b/deluge/ui/console/utils/colors.py
@@ -90,7 +90,7 @@ def init_colors():
             color_pairs[(fg_name, bg_name)] = counter
             counter += 1
         except curses.error as ex:
-            log.warn('Error: %s', ex)
+            log.warning('Error: %s', ex)
         return counter
 
     # Create the color_pairs dict
diff --git a/deluge/ui/console/widgets/fields.py b/deluge/ui/console/widgets/fields.py
index f9530c791..e5b9ece76 100644
--- a/deluge/ui/console/widgets/fields.py
+++ b/deluge/ui/console/widgets/fields.py
@@ -477,7 +477,7 @@ class IntSpinInput(InputField):
                 self.cursor = cursor
         except TypeError:
             import traceback
-            log.warn('TypeError: %s', ''.join(traceback.format_exc()))
+            log.warning('TypeError: %s', ''.join(traceback.format_exc()))
         else:
             if cursor is True:
                 self.cursor = len(self.valstr)
@@ -925,7 +925,7 @@ class ComboInput(InputField):
                 msg = c[1]
                 break
         if msg is None:
-            log.warn('Setting value "%s" found nothing in choices: %s', val, self.choices)
+            log.warning('Setting value "%s" found nothing in choices: %s', val, self.choices)
         self.fmt_keys.update({'msg': msg})
 
 
diff --git a/deluge/ui/console/widgets/inputpane.py b/deluge/ui/console/widgets/inputpane.py
index 810b72209..2aba998fd 100644
--- a/deluge/ui/console/widgets/inputpane.py
+++ b/deluge/ui/console/widgets/inputpane.py
@@ -87,7 +87,7 @@ class BaseInputPane(InputKeyHandler):
                 continue
             if e.name == input_element.name:
                 import traceback
-                log.warn(
+                log.warning(
                     'Input element with name "%s" already exists in input pane (%s):\n%s',
                     input_element.name, e, ''.join(traceback.format_stack(limit=5)),
                 )
diff --git a/deluge/ui/console/widgets/window.py b/deluge/ui/console/widgets/window.py
index 35660ea6f..eeb0de4e5 100644
--- a/deluge/ui/console/widgets/window.py
+++ b/deluge/ui/console/widgets/window.py
@@ -154,7 +154,7 @@ class BaseWindow(object):
             self.screen.noutrefresh(pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol)
         except curses.error as ex:
             import traceback
-            log.warn(
+            log.warning(
                 'Error on screen.noutrefresh(%s, %s, %s, %s, %s, %s) Error: %s\nStack: %s',
                 pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol, ex, ''.join(traceback.format_stack()),
             )
diff --git a/deluge/ui/gtkui/path_chooser.py b/deluge/ui/gtkui/path_chooser.py
index b96958d2f..249b4c894 100644
--- a/deluge/ui/gtkui/path_chooser.py
+++ b/deluge/ui/gtkui/path_chooser.py
@@ -162,7 +162,7 @@ class PathChooser(PathChooserComboBox):
                 try:
                     self.config_key_funcs[key][1](config[key])
                 except TypeError as ex:
-                    log.warn('TypeError: %s', ex)
+                    log.warning('TypeError: %s', ex)
 
         # Set the saved paths
         if self.paths_config_key and self.paths_config_key in config:
diff --git a/deluge/ui/gtkui/pluginmanager.py b/deluge/ui/gtkui/pluginmanager.py
index 0e0797877..f1424a693 100644
--- a/deluge/ui/gtkui/pluginmanager.py
+++ b/deluge/ui/gtkui/pluginmanager.py
@@ -72,7 +72,7 @@ class PluginManager(deluge.pluginmanagerbase.PluginManagerBase, component.Compon
         try:
             self.enable_plugin(name)
         except Exception as ex:
-            log.warn('Failed to enable plugin "%s": ex: %s', name, ex)
+            log.warning('Failed to enable plugin "%s": ex: %s', name, ex)
 
         self.run_on_show_prefs()
 
diff --git a/deluge/ui/gtkui/preferences.py b/deluge/ui/gtkui/preferences.py
index ef7ac2a11..f1832f0e6 100644
--- a/deluge/ui/gtkui/preferences.py
+++ b/deluge/ui/gtkui/preferences.py
@@ -909,7 +909,7 @@ class Preferences(component.Component):
 
         def on_plugin_action(arg):
             if not value and arg is False:
-                log.warn('Failed to enable plugin: %s', name)
+                log.warning('Failed to enable plugin: %s', name)
                 self.plugin_liststore.set_value(row, 1, False)
 
         d.addBoth(on_plugin_action)
diff --git a/deluge/ui/gtkui/removetorrentdialog.py b/deluge/ui/gtkui/removetorrentdialog.py
index 27faad359..c53e20f48 100644
--- a/deluge/ui/gtkui/removetorrentdialog.py
+++ b/deluge/ui/gtkui/removetorrentdialog.py
@@ -71,7 +71,7 @@ class RemoveTorrentDialog(object):
             if errors:
                 log.info('Error(s) occured when trying to delete torrent(s).')
                 for t_id, e_msg in errors:
-                    log.warn('Error removing torrent %s : %s', t_id, e_msg)
+                    log.warning('Error removing torrent %s : %s', t_id, e_msg)
 
         d = client.core.remove_torrents(self.__torrent_ids, remove_data)
         d.addCallback(on_removed_finished)
diff --git a/deluge/ui/gtkui/torrentdetails.py b/deluge/ui/gtkui/torrentdetails.py
index 6be19dffb..95544f532 100644
--- a/deluge/ui/gtkui/torrentdetails.py
+++ b/deluge/ui/gtkui/torrentdetails.py
@@ -74,7 +74,7 @@ class Tab(object):
                 args = [status[key] for key in widget.status_keys]
                 txt = widget.func(*args)
         except KeyError as ex:
-            log.warn('Unable to get status value: %s', ex)
+            log.warning('Unable to get status value: %s', ex)
             txt = ''
         return txt
 
diff --git a/deluge/ui/translations_util.py b/deluge/ui/translations_util.py
index e82d0cbce..cdffc3230 100644
--- a/deluge/ui/translations_util.py
+++ b/deluge/ui/translations_util.py
@@ -27,7 +27,7 @@ def set_dummy_trans(warn_msg=None):
 
     def _func(*txt):
         if warn_msg:
-            log.warn('"%s" has been marked for translation, but translation is unavailable.', txt[0])
+            log.warning('"%s" has been marked for translation, but translation is unavailable.', txt[0])
         return txt[0]
     builtins.__dict__['_'] = _func
     builtins.__dict__['ngettext'] = builtins.__dict__['_n'] = _func
@@ -80,7 +80,7 @@ def set_language(lang):
         ro = gettext.translation('deluge', localedir=translations_path, languages=[lang])
         ro.install()
     except IOError as ex:
-        log.warn('IOError when loading translations: %s', ex)
+        log.warning('IOError when loading translations: %s', ex)
 
 
 # Initialize gettext
diff --git a/deluge/ui/web/json_api.py b/deluge/ui/web/json_api.py
index db9df59fb..39ca81326 100644
--- a/deluge/ui/web/json_api.py
+++ b/deluge/ui/web/json_api.py
@@ -863,7 +863,7 @@ class WebApi(JSONComponent):
         web_config = component.get('DelugeWeb').config
         for key in config:
             if key in ['sessions', 'pwd_salt', 'pwd_sha1']:
-                log.warn('Ignored attempt to overwrite web config key: %s', key)
+                log.warning('Ignored attempt to overwrite web config key: %s', key)
                 continue
             web_config[key] = config[key]
 
diff --git a/deluge/ui/web/server.py b/deluge/ui/web/server.py
index fe8bee6c3..c7a4cba92 100644
--- a/deluge/ui/web/server.py
+++ b/deluge/ui/web/server.py
@@ -661,7 +661,7 @@ class DelugeWeb(component.Component):
         Start the DelugeWeb server
         """
         if self.socket:
-            log.warn('DelugeWeb is already running and cannot be started')
+            log.warning('DelugeWeb is already running and cannot be started')
             return
 
         log.info('Starting webui server at PID %s', os.getpid())