diff --git a/.flake8 b/.flake8
new file mode 100644
index 0000000..3b71da3
--- /dev/null
+++ b/.flake8
@@ -0,0 +1,18 @@
+[flake8]
+exclude =
+    .git,
+    .github,
+    .mypy_cache,
+    .pytest_cache,
+    __pycache__,
+    alembic,
+    htmlcov,
+    tests,
+    venv
+ignore=E203
+max-line-length = 120
+per-file-ignores =
+    # Missing __all__, main isn't supposed to be imported
+    main.py: DALL000,
+    # Missing __all__, Cogs aren't modules
+    ./didier/cogs/*: DALL000
\ No newline at end of file
diff --git a/.github/workflows/python.yml b/.github/workflows/python.yml
index ebcf246..b083e02 100644
--- a/.github/workflows/python.yml
+++ b/.github/workflows/python.yml
@@ -78,7 +78,7 @@ jobs:
       - name: Install dependencies
         run: pip3 install -r requirements.txt -r requirements-dev.txt
       - name: Linting
-        run: pylint didier database
+        run: flake8
   typing:
     needs: [dependencies]
     runs-on: ubuntu-latest
diff --git a/database/crud/currency.py b/database/crud/currency.py
index 8e7f2e6..f72b653 100644
--- a/database/crud/currency.py
+++ b/database/crud/currency.py
@@ -6,8 +6,23 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from database.crud import users
 from database.exceptions import currency as exceptions
 from database.models import Bank, NightlyData
-from database.utils.math.currency import rob_upgrade_price, interest_upgrade_price, capacity_upgrade_price
+from database.utils.math.currency import (
+    capacity_upgrade_price,
+    interest_upgrade_price,
+    rob_upgrade_price,
+)
 
+__all__ = [
+    "add_dinks",
+    "claim_nightly",
+    "get_bank",
+    "get_nightly_data",
+    "invest",
+    "upgrade_capacity",
+    "upgrade_interest",
+    "upgrade_rob",
+    "NIGHTLY_AMOUNT",
+]
 
 NIGHTLY_AMOUNT = 420
 
diff --git a/database/crud/custom_commands.py b/database/crud/custom_commands.py
index 4f5dd2f..c6377c6 100644
--- a/database/crud/custom_commands.py
+++ b/database/crud/custom_commands.py
@@ -7,6 +7,16 @@ from database.exceptions.constraints import DuplicateInsertException
 from database.exceptions.not_found import NoResultFoundException
 from database.models import CustomCommand, CustomCommandAlias
 
+__all__ = [
+    "clean_name",
+    "create_alias",
+    "create_command",
+    "edit_command",
+    "get_command",
+    "get_command_by_alias",
+    "get_command_by_name",
+]
+
 
 def clean_name(name: str) -> str:
     """Convert a name to lowercase & remove spaces to allow easier matching"""
diff --git a/database/crud/ufora_announcements.py b/database/crud/ufora_announcements.py
index c4d67f6..5f82390 100644
--- a/database/crud/ufora_announcements.py
+++ b/database/crud/ufora_announcements.py
@@ -1,9 +1,11 @@
 import datetime
 
-from sqlalchemy import select, delete
+from sqlalchemy import delete, select
 from sqlalchemy.ext.asyncio import AsyncSession
 
-from database.models import UforaCourse, UforaAnnouncement
+from database.models import UforaAnnouncement, UforaCourse
+
+__all__ = ["create_new_announcement", "get_courses_with_announcements", "remove_old_announcements"]
 
 
 async def get_courses_with_announcements(session: AsyncSession) -> list[UforaCourse]:
diff --git a/database/crud/users.py b/database/crud/users.py
index 794d951..cc5a899 100644
--- a/database/crud/users.py
+++ b/database/crud/users.py
@@ -3,7 +3,11 @@ from typing import Optional
 from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
 
-from database.models import User, Bank, NightlyData
+from database.models import Bank, NightlyData, User
+
+__all__ = [
+    "get_or_add",
+]
 
 
 async def get_or_add(session: AsyncSession, user_id: int) -> User:
diff --git a/database/engine.py b/database/engine.py
index 6636bcc..44b5e92 100644
--- a/database/engine.py
+++ b/database/engine.py
@@ -1,7 +1,7 @@
 from urllib.parse import quote_plus
 
 from sqlalchemy.engine import URL
-from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession
+from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine
 from sqlalchemy.orm import sessionmaker
 
 import settings
diff --git a/database/exceptions/constraints.py b/database/exceptions/constraints.py
index 1e78089..1087d6e 100644
--- a/database/exceptions/constraints.py
+++ b/database/exceptions/constraints.py
@@ -1,2 +1,5 @@
+__all__ = ["DuplicateInsertException"]
+
+
 class DuplicateInsertException(Exception):
     """Exception raised when a value already exists"""
diff --git a/database/exceptions/currency.py b/database/exceptions/currency.py
index 5710c62..c06c76f 100644
--- a/database/exceptions/currency.py
+++ b/database/exceptions/currency.py
@@ -1,3 +1,6 @@
+__all__ = ["DoubleNightly", "NotEnoughDinks"]
+
+
 class DoubleNightly(Exception):
     """Exception raised when claiming nightlies multiple times per day"""
 
diff --git a/database/exceptions/not_found.py b/database/exceptions/not_found.py
index eccfaa5..8a47fad 100644
--- a/database/exceptions/not_found.py
+++ b/database/exceptions/not_found.py
@@ -1,2 +1,5 @@
+__all__ = ["NoResultFoundException"]
+
+
 class NoResultFoundException(Exception):
     """Exception raised when nothing was found"""
diff --git a/database/migrations.py b/database/migrations.py
index 464c811..1effdff 100644
--- a/database/migrations.py
+++ b/database/migrations.py
@@ -2,9 +2,10 @@ import logging
 
 from alembic import config, script
 from alembic.runtime import migration
-
 from database.engine import engine
 
+__all__ = ["ensure_latest_migration"]
+
 
 async def ensure_latest_migration():
     """Make sure we are currently on the latest revision, otherwise raise an exception"""
diff --git a/database/models.py b/database/models.py
index ef2e439..71d4f3c 100644
--- a/database/models.py
+++ b/database/models.py
@@ -3,12 +3,25 @@ from __future__ import annotations
 from datetime import datetime
 from typing import Optional
 
-from sqlalchemy import BigInteger, Column, Integer, Text, ForeignKey, Boolean, DateTime
+from sqlalchemy import BigInteger, Boolean, Column, DateTime, ForeignKey, Integer, Text
 from sqlalchemy.orm import declarative_base, relationship
 
 Base = declarative_base()
 
 
+__all__ = [
+    "Base",
+    "Bank",
+    "CustomCommand",
+    "CustomCommandAlias",
+    "NightlyData",
+    "UforaAnnouncement",
+    "UforaCourse",
+    "UforaCourseAlias",
+    "User",
+]
+
+
 class Bank(Base):
     """A user's currency information"""
 
diff --git a/database/utils/math/currency.py b/database/utils/math/currency.py
index c6d36d0..b06c558 100644
--- a/database/utils/math/currency.py
+++ b/database/utils/math/currency.py
@@ -1,5 +1,7 @@
 import math
 
+__all__ = ["capacity_upgrade_price", "interest_upgrade_price", "rob_upgrade_price"]
+
 
 def interest_upgrade_price(level: int) -> int:
     """Calculate the price to upgrade your interest level"""
diff --git a/didier/__init__.py b/didier/__init__.py
index 62f3e85..42c3fc4 100644
--- a/didier/__init__.py
+++ b/didier/__init__.py
@@ -1 +1,3 @@
 from .didier import Didier
+
+__all__ = ["Didier"]
diff --git a/didier/cogs/currency.py b/didier/cogs/currency.py
index b30c283..4c76e58 100644
--- a/didier/cogs/currency.py
+++ b/didier/cogs/currency.py
@@ -5,7 +5,11 @@ from discord.ext import commands
 
 from database.crud import currency as crud
 from database.exceptions.currency import DoubleNightly, NotEnoughDinks
-from database.utils.math.currency import capacity_upgrade_price, interest_upgrade_price, rob_upgrade_price
+from database.utils.math.currency import (
+    capacity_upgrade_price,
+    interest_upgrade_price,
+    rob_upgrade_price,
+)
 from didier import Didier
 from didier.utils.discord.checks import is_owner
 from didier.utils.discord.converters import abbreviated_number
diff --git a/didier/cogs/help.py b/didier/cogs/help.py
index 9da24ca..33250a8 100644
--- a/didier/cogs/help.py
+++ b/didier/cogs/help.py
@@ -1,4 +1,4 @@
-from typing import Mapping, Optional, List
+from typing import List, Mapping, Optional
 
 import discord
 from discord.ext import commands
diff --git a/didier/cogs/owner.py b/didier/cogs/owner.py
index 0bde065..401067c 100644
--- a/didier/cogs/owner.py
+++ b/didier/cogs/owner.py
@@ -8,8 +8,8 @@ from database.crud import custom_commands
 from database.exceptions.constraints import DuplicateInsertException
 from database.exceptions.not_found import NoResultFoundException
 from didier import Didier
-from didier.data.modals.custom_commands import CreateCustomCommand, EditCustomCommand
 from didier.data.flags.owner import EditCustomFlags
+from didier.data.modals.custom_commands import CreateCustomCommand, EditCustomCommand
 
 
 class Owner(commands.Cog):
diff --git a/didier/data/embeds/ufora/announcements.py b/didier/data/embeds/ufora/announcements.py
index 138837e..984674e 100644
--- a/didier/data/embeds/ufora/announcements.py
+++ b/didier/data/embeds/ufora/announcements.py
@@ -17,6 +17,12 @@ from database.models import UforaCourse
 from didier.utils.types.datetime import int_to_weekday
 from didier.utils.types.string import leading
 
+__all__ = [
+    "fetch_ufora_announcements",
+    "parse_ids",
+    "UforaNotification",
+]
+
 
 @dataclass
 class UforaNotification:
diff --git a/didier/data/flags/__init__.py b/didier/data/flags/__init__.py
index 1ef3b46..93c1df6 100644
--- a/didier/data/flags/__init__.py
+++ b/didier/data/flags/__init__.py
@@ -1 +1,3 @@
 from .posix import PosixFlags
+
+__all__ = ["PosixFlags"]
diff --git a/didier/data/flags/owner.py b/didier/data/flags/owner.py
index e3e9789..5ff75a9 100644
--- a/didier/data/flags/owner.py
+++ b/didier/data/flags/owner.py
@@ -2,6 +2,8 @@ from typing import Optional
 
 from didier.data.flags import PosixFlags
 
+__all__ = ["EditCustomFlags"]
+
 
 class EditCustomFlags(PosixFlags):
     """Flags for the edit custom command"""
diff --git a/didier/data/flags/posix.py b/didier/data/flags/posix.py
index 8747165..4a0ba85 100644
--- a/didier/data/flags/posix.py
+++ b/didier/data/flags/posix.py
@@ -1,5 +1,7 @@
 from discord.ext import commands
 
+__all__ = ["PosixFlags"]
+
 
 class PosixFlags(commands.FlagConverter, delimiter=" ", prefix="--"):  # type: ignore
     """Base class to add POSIX-like flags to commands
diff --git a/didier/data/modals/custom_commands.py b/didier/data/modals/custom_commands.py
index a54f690..65c259f 100644
--- a/didier/data/modals/custom_commands.py
+++ b/didier/data/modals/custom_commands.py
@@ -6,6 +6,8 @@ import discord
 from database.crud.custom_commands import create_command, edit_command
 from didier import Didier
 
+__all__ = ["CreateCustomCommand", "EditCustomCommand"]
+
 
 class CreateCustomCommand(discord.ui.Modal, title="Create Custom Command"):
     """Modal to create new custom commands"""
diff --git a/didier/didier.py b/didier/didier.py
index ff26e7a..14a9943 100644
--- a/didier/didier.py
+++ b/didier/didier.py
@@ -10,6 +10,8 @@ from database.crud import custom_commands
 from database.engine import DBSession
 from didier.utils.discord.prefix import get_prefix
 
+__all__ = ["Didier"]
+
 
 class Didier(commands.Bot):
     """DIDIER <3"""
diff --git a/didier/utils/discord/checks/__init__.py b/didier/utils/discord/checks/__init__.py
index 7332b42..cbccbc5 100644
--- a/didier/utils/discord/checks/__init__.py
+++ b/didier/utils/discord/checks/__init__.py
@@ -1 +1,3 @@
 from .message_commands import is_owner
+
+__all__ = ["is_owner"]
diff --git a/didier/utils/discord/checks/message_commands.py b/didier/utils/discord/checks/message_commands.py
index a57b315..bb65270 100644
--- a/didier/utils/discord/checks/message_commands.py
+++ b/didier/utils/discord/checks/message_commands.py
@@ -1,5 +1,7 @@
 from discord.ext import commands
 
+__all__ = ["is_owner"]
+
 
 async def is_owner(ctx: commands.Context) -> bool:
     """Check that a command is being invoked by the owner of the bot"""
diff --git a/didier/utils/discord/converters/__init__.py b/didier/utils/discord/converters/__init__.py
index 3f47753..9ce48ad 100644
--- a/didier/utils/discord/converters/__init__.py
+++ b/didier/utils/discord/converters/__init__.py
@@ -1 +1,3 @@
-from .numbers import *
+from .numbers import abbreviated_number
+
+__all__ = ["abbreviated_number"]
diff --git a/didier/utils/discord/converters/numbers.py b/didier/utils/discord/converters/numbers.py
index 443f3e7..573652f 100644
--- a/didier/utils/discord/converters/numbers.py
+++ b/didier/utils/discord/converters/numbers.py
@@ -31,11 +31,11 @@ def abbreviated_number(argument: str) -> Union[str, int]:
         value = units.get(unit)
         argument = argument[:-1]
 
-    # [int][unit]
+    # [int][unit]  # noqa: E800
     if "." not in argument and value is not None:
         return int(argument) * (10**value)
 
-    # [float][unit]
+    # [float][unit]  # noqa: E800
     if "." in argument:
         # Floats themselves are not supported
         if value is None:
diff --git a/didier/utils/discord/prefix.py b/didier/utils/discord/prefix.py
index a096920..f57e06d 100644
--- a/didier/utils/discord/prefix.py
+++ b/didier/utils/discord/prefix.py
@@ -5,6 +5,8 @@ from discord.ext import commands
 
 from didier.data import constants
 
+__all__ = ["get_prefix"]
+
 
 def get_prefix(client: commands.Bot, message: Message) -> str:
     """Match a prefix against a message
diff --git a/didier/utils/types/datetime.py b/didier/utils/types/datetime.py
index 73d9072..3701b4f 100644
--- a/didier/utils/types/datetime.py
+++ b/didier/utils/types/datetime.py
@@ -1,3 +1,6 @@
+__all__ = ["int_to_weekday"]
+
+
 def int_to_weekday(number: int) -> str:  # pragma: no cover # it's useless to write a test for this
     """Get the Dutch name of a weekday from the number"""
     return ["Maandag", "Dinsdag", "Woensdag", "Donderdag", "Vrijdag", "Zaterdag", "Zondag"][number]
diff --git a/didier/utils/types/string.py b/didier/utils/types/string.py
index 0255877..ab4f415 100644
--- a/didier/utils/types/string.py
+++ b/didier/utils/types/string.py
@@ -1,6 +1,8 @@
 import math
 from typing import Optional
 
+__all__ = ["leading", "pluralize"]
+
 
 def leading(character: str, string: str, target_length: Optional[int] = 2) -> str:
     """Add a leading [character] to [string] to make it length [target_length]
diff --git a/main.py b/main.py
index 34a2cf3..fdbc027 100644
--- a/main.py
+++ b/main.py
@@ -1,9 +1,8 @@
+import asyncio
 import logging
 import sys
 from logging.handlers import RotatingFileHandler
 
-import asyncio
-
 import settings
 from database.migrations import ensure_latest_migration
 from didier import Didier
diff --git a/pyproject.toml b/pyproject.toml
index a81c771..ba0c283 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,6 +17,9 @@ omit = [
     "./didier/data/*"
 ]
 
+[tool.isort]
+profile = "black"
+
 [tool.mypy]
 plugins = [
     "sqlalchemy.ext.mypy.plugin"
@@ -25,19 +28,6 @@ plugins = [
 module = ["discord.*", "feedparser.*", "markdownify.*"]
 ignore_missing_imports = true
 
-[tool.pylint.master]
-disable = [
-    "missing-module-docstring",
-    "too-few-public-methods",
-    "too-many-arguments",
-    "too-many-instance-attributes",
-    "too-many-locals"
-]
-
-[tool.pylint.format]
-max-line-length = 120
-good-names = ["i", "dt"]
-
 [tool.pytest.ini_options]
 asyncio_mode = "auto"
 env = [
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 646f5e6..d8cb56f 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,9 +1,18 @@
 black==22.3.0
 coverage[toml]==6.4.1
 mypy==0.961
-pylint==2.14.1
 pytest==7.1.2
 pytest-asyncio==0.18.3
 pytest-env==0.6.2
 sqlalchemy2-stubs==0.0.2a23
-types-pytz==2021.3.8
\ No newline at end of file
+types-pytz==2021.3.8
+
+# Flake8 + plugins
+flake8==4.0.1
+flake8-bandit==3.0.0
+flake8-black==0.3.3
+flake8-bugbear==22.7.1
+flake8-dunder-all==0.2.1
+flake8-eradicate==1.2.1
+flake8-isort==4.1.1
+flake8-simplify==0.19.2