diff --git a/freqtrade/rpc/rpc_manager.py b/freqtrade/rpc/rpc_manager.py
index 0299c793a..bedd8fdd4 100644
--- a/freqtrade/rpc/rpc_manager.py
+++ b/freqtrade/rpc/rpc_manager.py
@@ -1,6 +1,7 @@
 """
 This module contains class to manage RPC communications (Telegram, Slack, ...)
 """
+from typing import Any, Optional, List
 import logging
 
 from freqtrade.rpc.telegram import Telegram
@@ -21,8 +22,8 @@ class RPCManager(object):
         """
         self.freqtrade = freqtrade
 
-        self.registered_modules = []
-        self.telegram = None
+        self.registered_modules: List[str] = []
+        self.telegram: Any = None
         self._init()
 
     def _init(self) -> None:
diff --git a/freqtrade/rpc/telegram.py b/freqtrade/rpc/telegram.py
index c640fc77b..c110b9627 100644
--- a/freqtrade/rpc/telegram.py
+++ b/freqtrade/rpc/telegram.py
@@ -18,7 +18,7 @@ from freqtrade.rpc.rpc import RPC
 logger = logging.getLogger(__name__)
 
 
-def authorized_only(command_handler: Callable[[Bot, Update], None]) -> Callable[..., Any]:
+def authorized_only(command_handler: Callable[[Any, Bot, Update], None]) -> Callable[..., Any]:
     """
     Decorator to check if the message comes from the correct chat_id
     :param command_handler: Telegram CommandHandler
@@ -65,7 +65,7 @@ class Telegram(RPC):
         """
         super().__init__(freqtrade)
 
-        self._updater = None
+        self._updater: Updater = None
         self._config = freqtrade.config
         self._init()