diff --git a/README.md b/README.md
index 8a8a26da..89ba1660 100644
--- a/README.md
+++ b/README.md
@@ -33,6 +33,7 @@ Every several seconds, the application pretends to watch a particular stream by
 
 ### Notes:
 
+- Requires Python 3.10 or higher.
 - Make sure to keep your cookies file safe, as the authorization information it stores can give another person access to your Twitch account.
 - Successfully logging into your Twitch account in the application, may cause Twitch to send you a "New Login" notification email. This is normal - you can verify that it comes from your own IP address. The application uses the Twitch's SmartTV account linking process, so the detected browser during the login should signify that as well.
 - The time remaining timer always countdowns a single minute and then stops - it is then restarted only after the application redetermines the remaining time. This "redetermination" can happen as early as at 10 seconds in a minute remaining, and as late as 20 seconds after the timer reaches zero (especially when finishing mining a drop), but is generally only an approximation and does not represent nor affect actual mining speed. The time variations are due to Twitch sometimes not reporting drop progress at all, or reporting progress for the wrong drop - these cases have all been accounted for in the application though.
diff --git a/cache.py b/cache.py
index f33cbb12..e87b1c01 100644
--- a/cache.py
+++ b/cache.py
@@ -1,4 +1,5 @@
 from __future__ import annotations
+
 import asyncio
 from datetime import datetime, timedelta, timezone
 
diff --git a/gui.py b/gui.py
index 22d13d44..599f7b2f 100644
--- a/gui.py
+++ b/gui.py
@@ -1043,7 +1043,7 @@ class TrayIcon:
 
     def __init__(self, manager: GUIManager, master: ttk.Widget):
         self._manager = manager
-        self.icon: pystray.Icon | None = None
+        self.icon: pystray.Icon | None = None  # type: ignore
         self._icon_images: dict[str, Image_module.Image] = {
             "pickaxe": Image_module.open(resource_path("icons/pickaxe.ico")),
             "active": Image_module.open(resource_path("icons/active.ico")),
diff --git a/utils.py b/utils.py
index a95fa37d..257674ed 100644
--- a/utils.py
+++ b/utils.py
@@ -19,9 +19,7 @@
 from functools import cached_property
 from datetime import datetime, timezone
 from collections import abc, OrderedDict
-from typing import (
-    Any, Literal, MutableSet, Callable, Generic, Mapping, TypeVar, cast, TYPE_CHECKING
-)
+from typing import Any, Literal, MutableSet, Callable, Generic, Mapping, TypeVar, ParamSpec, cast
 
 import yarl
 from PIL.ImageTk import PhotoImage
@@ -31,14 +29,6 @@
 from exceptions import ExitRequest, ReloadRequest
 from constants import _resource_path as resource_path  # noqa
 
-if TYPE_CHECKING:
-    from typing_extensions import ParamSpec
-else:
-    # stub it
-    class ParamSpec:
-        def __init__(*args, **kwargs):
-            pass
-
 
 _T = TypeVar("_T")  # type
 _D = TypeVar("_D")  # default