diff --git a/bot/exts/advent_of_code/_caches.py b/bot/exts/advent_of_code/_caches.py
index 8174d64..bfa9b3c 100644
--- a/bot/exts/advent_of_code/_caches.py
+++ b/bot/exts/advent_of_code/_caches.py
@@ -6,6 +6,7 @@
 class AoCSettingOption(Enum):
     COMPLETIONIST_ENABLED = "completionist_enabled"
 
+
 # How many people are in each leaderboard
 # RedisCache[leaderboard_id, int]
 leaderboard_counts = async_rediscache.RedisCache(namespace="AOC_leaderboard_counts")
diff --git a/bot/exts/advent_of_code/_cog.py b/bot/exts/advent_of_code/_cog.py
index 74d6d92..3971e69 100644
--- a/bot/exts/advent_of_code/_cog.py
+++ b/bot/exts/advent_of_code/_cog.py
@@ -210,8 +210,8 @@ async def join_leaderboard(self, interaction: discord.Interaction) -> None:
         current_date = datetime.now(tz=UTC)
         allowed_months = (Month.NOVEMBER.value, Month.DECEMBER.value)
         if not (
-            current_date.month in allowed_months and current_date.year == AocConfig.year
-            or current_date.month == Month.JANUARY.value and current_date.year == AocConfig.year + 1
+            (current_date.month in allowed_months and current_date.year == AocConfig.year)
+            or (current_date.month == Month.JANUARY.value and current_date.year == AocConfig.year + 1)
         ):
             # Only allow joining the leaderboard in the run up to AOC and the January following.
             await interaction.response.send_message(
diff --git a/bot/utils/checks.py b/bot/utils/checks.py
index 2704f49..8311793 100644
--- a/bot/utils/checks.py
+++ b/bot/utils/checks.py
@@ -1,5 +1,4 @@
 from collections.abc import Callable, Container
-from typing import NoReturn
 
 from discord.ext import commands
 from discord.ext.commands import Context
@@ -13,7 +12,7 @@
 
 def in_code_jam_category(code_jam_category_name: str) -> Callable:
     """Raises `CodeJamCategoryCheckFailure` when the command is invoked outside the Code Jam categories."""
-    async def predicate(ctx: commands.Context) -> bool | NoReturn:
+    async def predicate(ctx: commands.Context) -> bool:
         if not ctx.guild:
             return False
         if not ctx.message.channel.category:
diff --git a/tests/helpers.py b/tests/helpers.py
index 56dfe0e..c317e72 100644
--- a/tests/helpers.py
+++ b/tests/helpers.py
@@ -666,6 +666,7 @@ class MockAsyncWebhook(CustomMockMixin, unittest.mock.MagicMock):
     spec_set = webhook_instance
     additional_spec_asyncs = ("send", "edit", "delete", "execute")
 
+
 @contextmanager
 def no_create_task():
     def side_effect(coro, *_, **__):