diff --git a/ examples/poke_1v1_fighter.py b/ examples/poke_1v1_fighter.py
index e9a6428..6488023 100644
--- a/ examples/poke_1v1_fighter.py	
+++ b/ examples/poke_1v1_fighter.py	
@@ -1,9 +1,9 @@
 # 1v1 fights for the pokemon for stats.
 # Author: Edmund Dable-Heath
 """
-    Setting each of the 150 pokemon to fight each other pokemon until either a cutoff is
-    reached or the variation of the win ratio over a history of s fights falls below a
-    threshold.
+Setting each of the 150 pokemon to fight each other pokemon until either a cutoff is
+reached or the variation of the win ratio over a history of s fights falls below a
+threshold.
 """
 
 # Imports include reference to potential scripts
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index d56be97..ccbab45 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -3,13 +3,13 @@ ci:
   autofix_commit_msg: "style: pre-commit fixes"
 
 repos:
-  - repo: https://github.com/psf/black
-    rev: "23.3.0"
+  - repo: https://github.com/psf/black-pre-commit-mirror
+    rev: "26.3.1"
     hooks:
       - id: black-jupyter
 
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: "v4.4.0"
+    rev: "v6.0.0"
     hooks:
       - id: check-added-large-files
       - id: check-case-conflict
@@ -32,25 +32,25 @@ repos:
       - id: rst-inline-touching-normal
 
   - repo: https://github.com/pre-commit/mirrors-prettier
-    rev: "v2.7.1"
+    rev: "v4.0.0-alpha.8"
     hooks:
       - id: prettier
         types_or: [yaml, markdown, html, css, scss, javascript, json]
         args: [--prose-wrap=always]
 
   - repo: https://github.com/asottile/blacken-docs
-    rev: "1.13.0"
+    rev: "1.20.0"
     hooks:
       - id: blacken-docs
         additional_dependencies: [black==23.3.0]
 
-  - repo: https://github.com/charliermarsh/ruff-pre-commit
-    rev: "v0.0.264"
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: "v0.15.12"
     hooks:
       - id: ruff
         args: ["--fix", "--show-fixes"]
 
   - repo: https://github.com/shellcheck-py/shellcheck-py
-    rev: "v0.9.0.2"
+    rev: "v0.11.0.1"
     hooks:
       - id: shellcheck
diff --git a/src/p2lab/__init__.py b/src/p2lab/__init__.py
index 1bd7d76..e1ff5b5 100644
--- a/src/p2lab/__init__.py
+++ b/src/p2lab/__init__.py
@@ -4,9 +4,8 @@
 p2lab: a package for genetic optimisation of pokemon teams
 """
 
-
 from __future__ import annotations
 
 __version__ = "0.1.0"
 
-__all__ = ("__version__", "pokemon", "genetic")
+__all__ = ("__version__", "genetic", "pokemon")
diff --git a/src/p2lab/_compat/__init__.py b/src/p2lab/_compat/__init__.py
index 1bb08df..dad6d7f 100644
--- a/src/p2lab/_compat/__init__.py
+++ b/src/p2lab/_compat/__init__.py
@@ -4,5 +4,4 @@
 p2lab: a package for genetic optimisation of pokemon teams
 """
 
-
 from __future__ import annotations
diff --git a/src/p2lab/_compat/typing.py b/src/p2lab/_compat/typing.py
index d73b109..365da72 100644
--- a/src/p2lab/_compat/typing.py
+++ b/src/p2lab/_compat/typing.py
@@ -4,12 +4,11 @@
 p2lab: a package for genetic optimisation of pokemon teams
 """
 
-
 from __future__ import annotations
 
 from typing import Literal, Protocol, runtime_checkable
 
-__all__ = ["Protocol", "runtime_checkable", "Literal"]
+__all__ = ["Literal", "Protocol", "runtime_checkable"]
 
 
 def __dir__() -> list[str]:
diff --git a/src/p2lab/genetic/__init__.py b/src/p2lab/genetic/__init__.py
index f7a0620..8388e4f 100644
--- a/src/p2lab/genetic/__init__.py
+++ b/src/p2lab/genetic/__init__.py
@@ -1,8 +1,8 @@
 from __future__ import annotations
 
 __all__ = (
-    "genetic_algorithm",
     "fitness",
+    "genetic_algorithm",
     "matching",
     "operations",
 )
diff --git a/src/p2lab/genetic/utils.py b/src/p2lab/genetic/utils.py
index fe684da..71656c3 100644
--- a/src/p2lab/genetic/utils.py
+++ b/src/p2lab/genetic/utils.py
@@ -61,7 +61,7 @@ def crossover(
         team2_pokemon = team2_old.pokemon
 
         # Randomly pick locus
-        locus = random.sample(range(0, num_pokemon), k=1)[0]
+        locus = random.sample(range(num_pokemon), k=1)[0]
 
         # Check that the sliciing here works but you get the idea
         team1_new_pokemeon = team1_pokemon[0:locus] + team2_pokemon[locus:num_pokemon]
diff --git a/src/p2lab/pokemon/__init__.py b/src/p2lab/pokemon/__init__.py
index 5845c93..5e80e19 100644
--- a/src/p2lab/pokemon/__init__.py
+++ b/src/p2lab/pokemon/__init__.py
@@ -2,6 +2,6 @@
 
 __all__ = (
     "battles",
-    "teams",
     "premade",
+    "teams",
 )
diff --git a/src/p2lab/pokemon/pokefactory.py b/src/p2lab/pokemon/pokefactory.py
index 9837e49..7994cc1 100644
--- a/src/p2lab/pokemon/pokefactory.py
+++ b/src/p2lab/pokemon/pokefactory.py
@@ -4,6 +4,7 @@
 
 This is directly inspired by poke-env's diagostic_tools folder
 """
+
 from __future__ import annotations
 
 import numpy as np
@@ -68,7 +69,7 @@ def make_pokemon(self, dexnum=None, generate_moveset=False, **kwargs):
             raise ValueError(msg)
         if dexnum is None:
             dexnum = np.random.choice(list(self.dex2mon.keys()))
-        if generate_moveset or "moves" not in kwargs.keys():
+        if generate_moveset or "moves" not in kwargs:
             poss_moves = self.get_allowed_moves(dexnum)
             moves = (
                 np.random.choice(poss_moves, 4, replace=False)
@@ -76,16 +77,16 @@ def make_pokemon(self, dexnum=None, generate_moveset=False, **kwargs):
                 else poss_moves
             )
             kwargs["moves"] = moves
-        if "ivs" not in kwargs.keys():
+        if "ivs" not in kwargs:
             ivs = [31] * 6
             kwargs["ivs"] = ivs
-        if "evs" not in kwargs.keys():
+        if "evs" not in kwargs:
             # TODO: implement EV generation better
             evs = [510 // 6] * 6
             kwargs["evs"] = evs
-        if "level" not in kwargs.keys():
+        if "level" not in kwargs:
             kwargs["level"] = 100
-        if "ability" not in kwargs.keys():
+        if "ability" not in kwargs:
             kwargs["ability"] = np.random.choice(
                 list(self.get_allowed_abilities(dexnum).values())
             )
diff --git a/target_api.md b/target_api.md
index 2884acd..1563888 100644
--- a/target_api.md
+++ b/target_api.md
@@ -7,8 +7,7 @@ running genetic algorithms to optimize teams.
 Thank you to github copilot for helping me write this document lmao
 
 ```python3
-
-team = generate_team(format='gen8randombattle', seed=1234)
+team = generate_team(format="gen8randombattle", seed=1234)
 
 # a team object contains a list of 6 pokemon objects with their moves, items, etc.
 # it's also tracking the (normalised) number of wins/losses/ties for this team.
@@ -30,12 +29,12 @@ team = generate_team(format='gen8randombattle', seed=1234)
 # here's an idealised Bot class that uses these same env variables to run a showdown bot, but more cleanly:
 bot_1 = Bot(
     team,
-    strategy='safest',
-    websocket_uri='sim.psim.us:8000',
-    user='whimsicaldreams',
-    password='password',
-    bot_mode='CHALLENGE_USER',
-    format='gen3ou',
+    strategy="safest",
+    websocket_uri="sim.psim.us:8000",
+    user="whimsicaldreams",
+    password="password",
+    bot_mode="CHALLENGE_USER",
+    format="gen3ou",
     num_battles=1,
     save_replay=False,
 )
@@ -47,18 +46,19 @@ bot_1 = Bot(
 # now we can run a battle between two bots:
 bot_2 = Bot(
     team,
-    strategy='safest',
-    websocket_uri='sim.psim.us:8000',
-    user='melonchomper',
-    password='password',
-    bot_mode='CHALLENGE_USER',  # this would need to be ACCEPT_CHALLENGE
-    format='gen3ou',
+    strategy="safest",
+    websocket_uri="sim.psim.us:8000",
+    user="melonchomper",
+    password="password",
+    bot_mode="CHALLENGE_USER",  # this would need to be ACCEPT_CHALLENGE
+    format="gen3ou",
     num_battles=1,
     save_replay=False,
 )
 
 # from a little google searching, it looks like we can run these bots in parallel using asyncio:
 
+
 async def run_battle(bot_1, bot_2):
     # individually run the showdown bots at the same time, and wait for the results
     await asyncio.gather(bot_1.challenge(bot_2), bot_2.accept(bot_1))
@@ -66,6 +66,7 @@ async def run_battle(bot_1, bot_2):
     # update the win/loss/tie counts for each team
     ...
 
+
 run_battle(bot_1, bot_2)
 
 # within this function, we'll need to:
@@ -74,7 +75,20 @@ run_battle(bot_1, bot_2)
 # - update the win/loss/tie counts for each team
 
 # here's a more generic example, where we specify a number of battles for each team, and then run them all:
-bots = {f'bot{i}':Bot(team, strategy='safest', websocket_uri='sim.psim.us:8000', user=f'bot{i}', password='password', bot_mode='CHALLENGE_USER' if i % 2 == 0 else 'ACCEPT_CHALLENGE', format='gen3ou', num_battles=10, save_replay=False) for i in range(10)}
+bots = {
+    f"bot{i}": Bot(
+        team,
+        strategy="safest",
+        websocket_uri="sim.psim.us:8000",
+        user=f"bot{i}",
+        password="password",
+        bot_mode="CHALLENGE_USER" if i % 2 == 0 else "ACCEPT_CHALLENGE",
+        format="gen3ou",
+        num_battles=10,
+        save_replay=False,
+    )
+    for i in range(10)
+}
 
 # num_battles = 10 would mean that bot would challenge the same bot 10 times, so we can make every bot fight every other bot 10 times
 
@@ -85,14 +99,18 @@ for bot_1, bot_2 in itertools.combinations(bots.values(), 2):
     if bot_1 != bot_2:
         try:
             # make sure bot_1 is the challenger and bot_2 is the acceptor
-            bot_1.bot_mode = 'CHALLENGE_USER'
-            bot_2.bot_mode = 'ACCEPT_CHALLENGE'
+            bot_1.bot_mode = "CHALLENGE_USER"
+            bot_2.bot_mode = "ACCEPT_CHALLENGE"
 
             # check if either bot is currently in a battle
             if bot_1.in_battle or bot_2.in_battle:
-                print(f'Bot {bot_1} or {bot_2} is currently in a battle, waiting for them to finish...')
+                print(
+                    f"Bot {bot_1} or {bot_2} is currently in a battle, waiting for them to finish..."
+                )
                 while bot_1.in_battle or bot_2.in_battle:
-                    await asyncio.sleep(1)  # hopefully this will wait for the battle to finish
+                    await asyncio.sleep(
+                        1
+                    )  # hopefully this will wait for the battle to finish
 
             # run the battle
             bot_1.in_battle = True
@@ -105,7 +123,7 @@ for bot_1, bot_2 in itertools.combinations(bots.values(), 2):
 
         except Exception as e:
             print(e)
-            print(f'Error running battle between {bot_1} and {bot_2}')
+            print(f"Error running battle between {bot_1} and {bot_2}")
 
 # ensure we're only here once every bot has fought every other bot
 while any(bot.in_battle for bot in bots.values()):
diff --git a/tests/conftest.py b/tests/conftest.py
index 73a9cc6..109f8a7 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -5,11 +5,11 @@
 from p2lab.pokemon import pokefactory, premade, teams
 
 
-@pytest.fixture()
+@pytest.fixture
 def default_factory():
     return pokefactory.PokeFactory()
 
 
-@pytest.fixture()
+@pytest.fixture
 def gen_1_pool():
     return teams.import_pool(premade.gen_1_pokemon())
diff --git a/tests/test_package.py b/tests/test_package.py
index 8d53dac..ab8fe3a 100644
--- a/tests/test_package.py
+++ b/tests/test_package.py
@@ -10,8 +10,7 @@ def test_version():
 
 @runtime_checkable
 class HasQuack(Protocol):
-    def quack(self) -> str:
-        ...
+    def quack(self) -> str: ...
 
 
 class Duck:
diff --git a/timings.py b/timings.py
index 5ef1a47..03ff5ed 100644
--- a/timings.py
+++ b/timings.py
@@ -5,11 +5,11 @@
 from itertools import permutations
 
 import numpy as np
+from p2lab.team import Team
 
 from p2lab.genetic.fitness import BTmodel, win_percentages
 from p2lab.genetic.matching import dense
 from p2lab.genetic.operations import build_crossover_fn, mutate, slot_swap
-from p2lab.team import Team
 
 # Constants
 N_TEAM = 3