diff --git a/zulip_bots/zulip_bots/bots/followup/followup.py b/zulip_bots/zulip_bots/bots/followup/followup.py
index db95d75..95eeb57 100644
--- a/zulip_bots/zulip_bots/bots/followup/followup.py
+++ b/zulip_bots/zulip_bots/bots/followup/followup.py
@@ -13,7 +13,7 @@ class FollowupHandler(object):
     external issue tracker as well.
     '''
 
-    def usage(self: Any) -> str:
+    def usage(self) -> str:
         return '''
             This plugin will allow users to flag messages
             as being follow-up items.  Users should preface
@@ -23,7 +23,7 @@ class FollowupHandler(object):
             called "followup" that your API user can send to.
             '''
 
-    def handle_message(self: Any, message: Dict[str, str], bot_handler: Any) -> None:
+    def handle_message(self, message: Dict[str, str], bot_handler: Any) -> None:
         if message['content'] == '':
             bot_response = "Please specify the message you want to send to followup stream after @mention-bot"
             bot_handler.send_reply(message, bot_response)
@@ -36,7 +36,7 @@ class FollowupHandler(object):
                 content=bot_response,
             ))
 
-    def get_bot_followup_response(self: Any, message: Dict[str, str]) -> str:
+    def get_bot_followup_response(self, message: Dict[str, str]) -> str:
         original_content = message['content']
         original_sender = message['sender_email']
         temp_content = 'from %s: ' % (original_sender,)
diff --git a/zulip_bots/zulip_bots/bots/followup/test_followup.py b/zulip_bots/zulip_bots/bots/followup/test_followup.py
index 600488b..599bf92 100755
--- a/zulip_bots/zulip_bots/bots/followup/test_followup.py
+++ b/zulip_bots/zulip_bots/bots/followup/test_followup.py
@@ -10,7 +10,7 @@ from typing import Any
 class TestFollowUpBot(BotTestCase):
     bot_name = "followup"
 
-    def test_bot(self: Any) -> None:
+    def test_bot(self) -> None:
         expected_send_reply = [
             ("", 'Please specify the message you want to send to followup stream after @mention-bot')
         ]
diff --git a/zulip_bots/zulip_bots/bots/giphy/giphy.py b/zulip_bots/zulip_bots/bots/giphy/giphy.py
index e2a68aa..3f6b887 100644
--- a/zulip_bots/zulip_bots/bots/giphy/giphy.py
+++ b/zulip_bots/zulip_bots/bots/giphy/giphy.py
@@ -21,17 +21,17 @@ class GiphyHandler(object):
     and responds with a message with the GIF based on provided keywords.
     It also responds to private messages.
     '''
-    def usage(self: Any) -> str:
+    def usage(self) -> str:
         return '''
             This plugin allows users to post GIFs provided by Giphy.
             Users should preface keywords with the Giphy-bot @mention.
             The bot responds also to private messages.
             '''
 
-    def initialize(self: Any, bot_handler: Any) -> None:
+    def initialize(self, bot_handler: Any) -> None:
         self.config_info = bot_handler.get_config_info('giphy')
 
-    def handle_message(self: Any, message: Dict[str, str], bot_handler: Any) -> None:
+    def handle_message(self, message: Dict[str, str], bot_handler: Any) -> None:
         bot_response = get_bot_giphy_response(
             message,
             bot_handler,
diff --git a/zulip_bots/zulip_bots/bots/giphy/test_giphy.py b/zulip_bots/zulip_bots/bots/giphy/test_giphy.py
index b22f19c..a6c34ff 100755
--- a/zulip_bots/zulip_bots/bots/giphy/test_giphy.py
+++ b/zulip_bots/zulip_bots/bots/giphy/test_giphy.py
@@ -9,7 +9,7 @@ from zulip_bots.test_lib import StubBotHandler, StubBotTestCase, get_bot_message
 class TestGiphyBot(StubBotTestCase):
     bot_name = "giphy"
 
-    def test_normal(self: Any) -> None:
+    def test_normal(self) -> None:
         bot_response = '[Click to enlarge]' \
                        '(https://media4.giphy.com/media/3o6ZtpxSZbQRRnwCKQ/giphy.gif)' \
                        '[](/static/images/interactive-bot/giphy/powered-by-giphy.png)'
@@ -18,7 +18,7 @@ class TestGiphyBot(StubBotTestCase):
                 self.mock_http_conversation('test_normal'):
             self.verify_reply('Hello', bot_response)
 
-    def test_no_result(self: Any) -> None:
+    def test_no_result(self) -> None:
         with self.mock_config_info({'key': '12345678'}), \
                 self.mock_http_conversation('test_no_result'):
             self.verify_reply(
@@ -26,7 +26,7 @@ class TestGiphyBot(StubBotTestCase):
                 'Sorry, I don\'t have a GIF for "world without zulip"! :astonished:',
             )
 
-    def test_403(self: Any) -> None:
+    def test_403(self) -> None:
         bot = get_bot_message_handler(self.bot_name)
         bot_handler = StubBotHandler()
 
@@ -42,7 +42,7 @@ class TestGiphyBot(StubBotTestCase):
                 # but an exception.
                 bot.handle_message(mock_message, bot_handler)
 
-    def test_connection_error(self: Any) -> None:
+    def test_connection_error(self) -> None:
         with self.mock_config_info({'key': '12345678'}), \
                 patch('requests.get', side_effect=ConnectionError()), \
                 patch('logging.warning'):
diff --git a/zulip_bots/zulip_bots/bots/github_detail/github_detail.py b/zulip_bots/zulip_bots/bots/github_detail/github_detail.py
index 40b30cf..e304866 100644
--- a/zulip_bots/zulip_bots/bots/github_detail/github_detail.py
+++ b/zulip_bots/zulip_bots/bots/github_detail/github_detail.py
@@ -17,19 +17,19 @@ class GithubHandler(object):
     GITHUB_ISSUE_URL_TEMPLATE = 'https://api.github.com/repos/{owner}/{repo}/issues/{id}'
     HANDLE_MESSAGE_REGEX = re.compile("(?:([\w-]+)\/)?([\w-]+)?#(\d+)")
 
-    def initialize(self: Any, bot_handler: Any) -> None:
+    def initialize(self, bot_handler: Any) -> None:
         self.config_info = bot_handler.get_config_info('github_detail', optional=True)
         self.owner = self.config_info.get("owner", False)
         self.repo = self.config_info.get("repo", False)
 
-    def usage(self: Any) -> str:
+    def usage(self) -> str:
         return ("This plugin displays details on github issues and pull requests. "
                 "To reference an issue or pull request usename mention the bot then "
                 "anytime in the message type its id, for example:\n"
                 "@**Github detail** #3212 zulip#3212 zulip/zulip#3212\n"
                 "The default owner is {} and the default repo is {}.".format(self.owner, self.repo))
 
-    def format_message(self: Any, details: Dict[str, Any]) -> str:
+    def format_message(self, details: Dict[str, Any]) -> str:
         number = details['number']
         title = details['title']
         link = details['html_url']
@@ -46,7 +46,7 @@ class GithubHandler(object):
                           'Status - **{status}**\n```quote\n{description}\n```'.format(status=status, description=description))
         return ''.join(message_string)
 
-    def get_details_from_github(self: Any, owner: str, repo: str, number: str) -> Union[None, Dict[str, Union[str, int, bool]]]:
+    def get_details_from_github(self, owner: str, repo: str, number: str) -> Union[None, Dict[str, Union[str, int, bool]]]:
         # Gets the details of an issues or pull request
         try:
             r = requests.get(
@@ -58,7 +58,7 @@ class GithubHandler(object):
             return None
         return r.json()
 
-    def get_owner_and_repo(self: Any, issue_pr: Any) -> Tuple[str, str]:
+    def get_owner_and_repo(self, issue_pr: Any) -> Tuple[str, str]:
         owner = issue_pr.group(1)
         repo = issue_pr.group(2)
         if owner is None:
@@ -67,7 +67,7 @@ class GithubHandler(object):
                 repo = self.repo
         return (owner, repo)
 
-    def handle_message(self: Any, message: Dict[str, str], bot_handler: Any) -> None:
+    def handle_message(self, message: Dict[str, str], bot_handler: Any) -> None:
         # Send help message
         if message['content'] == 'help':
             bot_handler.send_reply(message, self.usage())
diff --git a/zulip_bots/zulip_bots/bots/github_detail/test_github_detail.py b/zulip_bots/zulip_bots/bots/github_detail/test_github_detail.py
index a886ae7..642089b 100755
--- a/zulip_bots/zulip_bots/bots/github_detail/test_github_detail.py
+++ b/zulip_bots/zulip_bots/bots/github_detail/test_github_detail.py
@@ -13,7 +13,7 @@ class TestGithubDetailBot(StubBotTestCase):
     mock_config = {'owner': 'zulip', 'repo': 'zulip'}
 
     # Overrides default test_bot_usage().
-    def test_bot_usage(self: Any) -> None:
+    def test_bot_usage(self) -> None:
         bot = get_bot_message_handler(self.bot_name)
         bot_handler = StubBotHandler()
 
@@ -22,7 +22,7 @@ class TestGithubDetailBot(StubBotTestCase):
 
         self.assertIn('displays details on github issues', bot.usage())
 
-    def test_issue(self: Any) -> None:
+    def test_issue(self) -> None:
         request = 'zulip/zulip#5365'
         bot_response = '**[zulip/zulip#5365](https://github.com/zulip/zulip/issues/5365)'\
                        ' - frontend: Enable hot-reloading of CSS in development**\n'\
@@ -38,7 +38,7 @@ class TestGithubDetailBot(StubBotTestCase):
             with self.mock_config_info(self.mock_config):
                 self.verify_reply(request, bot_response)
 
-    def test_pull_request(self: Any) -> None:
+    def test_pull_request(self) -> None:
         request = 'zulip/zulip#5345'
         bot_response = '**[zulip/zulip#5345](https://github.com/zulip/zulip/pull/5345)'\
                        ' - [WIP] modal: Replace bootstrap modal with custom modal class**\n'\
@@ -55,20 +55,20 @@ class TestGithubDetailBot(StubBotTestCase):
             with self.mock_config_info(self.mock_config):
                 self.verify_reply(request, bot_response)
 
-    def test_404(self: Any) -> None:
+    def test_404(self) -> None:
         request = 'zulip/zulip#0'
         bot_response = 'Failed to find issue/pr: zulip/zulip#0'
         with self.mock_http_conversation('test_404'):
             with self.mock_config_info(self.mock_config):
                 self.verify_reply(request, bot_response)
 
-    def test_random_text(self: Any) -> None:
+    def test_random_text(self) -> None:
         request = 'some random text'
         bot_response = 'Failed to find any issue or PR.'
         with self.mock_config_info(self.mock_config):
             self.verify_reply(request, bot_response)
 
-    def test_help_text(self: Any) -> None:
+    def test_help_text(self) -> None:
         request = 'help'
         bot_response = 'This plugin displays details on github issues and pull requests. '\
                        'To reference an issue or pull request usename mention the bot then '\
diff --git a/zulip_bots/zulip_bots/bots/help/help.py b/zulip_bots/zulip_bots/bots/help/help.py
index 3d116b3..5b878a1 100644
--- a/zulip_bots/zulip_bots/bots/help/help.py
+++ b/zulip_bots/zulip_bots/bots/help/help.py
@@ -2,7 +2,7 @@
 from typing import Any, Dict
 
 class HelpHandler(object):
-    def usage(self: Any) -> str:
+    def usage(self) -> str:
         return '''
             This plugin will give info about Zulip to
             any user that types a message saying "help".
@@ -12,7 +12,7 @@ class HelpHandler(object):
             your Zulip instance.
             '''
 
-    def handle_message(self: Any, message: Dict[str, str], bot_handler: Any) -> None:
+    def handle_message(self, message: Dict[str, str], bot_handler: Any) -> None:
         help_content = "Info on Zulip can be found here:\nhttps://github.com/zulip/zulip"
         bot_handler.send_reply(message, help_content)
 
diff --git a/zulip_bots/zulip_bots/bots/help/test_help.py b/zulip_bots/zulip_bots/bots/help/test_help.py
index d6e6210..32d2fc7 100755
--- a/zulip_bots/zulip_bots/bots/help/test_help.py
+++ b/zulip_bots/zulip_bots/bots/help/test_help.py
@@ -7,7 +7,7 @@ from typing import Any
 class TestHelpBot(StubBotTestCase):
     bot_name = "help"
 
-    def test_bot(self: Any) -> None:
+    def test_bot(self) -> None:
         help_text = "Info on Zulip can be found here:\nhttps://github.com/zulip/zulip"
         requests = ["", "help", "Hi, my name is abc"]