diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 13581a8..f562173 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -16,13 +16,7 @@ jobs:
       uses: actions/setup-python@v3
       with:
         python-version: ${{ matrix.python-version }}
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        pip install mypy flake8 Flake8-pyproject
-    - name: Analysing the code with mypy
-      run: |
-        mypy tgbot --install-types --non-interactive
-    - name: Analysing the code with flake8
-      run: |
-        flake8
+    - name: Give execute permission to lint.sh
+      run: chmod +x ./lint.sh
+    - name: Lint code
+      run: ./lint.sh
diff --git a/lint.sh b/lint.sh
new file mode 100755
index 0000000..278d358
--- /dev/null
+++ b/lint.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+# Exit script on first error
+set -e
+
+# Check if pylint is installed
+if ! pip list | grep ruff; then
+    # Upgrade pip and install pylint if not installed
+    python -m pip install --upgrade pip
+    pip install ruff
+fi
+
+# Run pylint on all Python files in the repository
+#find . -name "*.py" -print0 | xargs -0 pylint
+ruff check .
\ No newline at end of file
diff --git a/pyproject.toml b/pyproject.toml
index 8d8f649..5f96287 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,53 +1,57 @@
-[tool.flake8]
-max-line-length = 120
+[tool.ruff]
+# Exclude a variety of commonly ignored directories.
 exclude = [
+    ".bzr",
+    ".direnv",
+    ".eggs",
     ".git",
-    "__pycache__",
-    "docs/source/conf.py",
+    ".git-rewrite",
+    ".hg",
+    ".mypy_cache",
+    ".nox",
+    ".pants.d",
+    ".pytype",
+    ".ruff_cache",
+    ".svn",
+    ".tox",
+    ".venv",
+    "__pypackages__",
+    "_build",
+    "buck-out",
     "build",
     "dist",
-    "tests",
-    "alembic"
-]
-ignore = [
-    "I101",
-    "D100",
-    "D101",
-    "D102",
-    "D103",
-    "D104",
-    "D105",
-    "D107",
-    "D401",
-    "E203",
-    "I900",
-    "N802",
-    "N806",
-    "N812",
-    "W503",
-    "S311",
-    "S605",
-    "S607",
-    "ISC003",
-    "ISC001",
-    "T101",
-    "T000",
-    "F541",
-    "PL123",
-    "E712"
-]
-per-file-ignores = [
-    '__init__.py:F401',
+    "node_modules",
+    "venv",
 ]
 
-[tool.mypy]
-ignore_missing_imports = true
-disallow_untyped_defs = true
-check_untyped_defs = true
-warn_redundant_casts = true
-no_implicit_optional = true
-strict_optional = true
-show_error_codes = true
-strict_equality = true
-warn_unreachable = true
-warn_unused_configs = true
+# Same as Black.
+line-length = 88
+indent-width = 4
+
+# Assume Python 3.10
+target-version = "py310"
+
+[tool.ruff.lint]
+# Enable Pyflakes (`F`) and a subset of the pycodestyle (`E`)  codes by default.
+select = ["E4", "E7", "E9", "F"]
+ignore = ["E712"]
+
+# Allow fix for all enabled rules (when `--fix`) is provided.
+fixable = ["ALL"]
+unfixable = []
+
+# Allow unused variables when underscore-prefixed.
+dummy-variable-rgx = "^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$"
+
+[tool.ruff.format]
+# Like Black, use double quotes for strings.
+quote-style = "double"
+
+# Like Black, indent with spaces, rather than tabs.
+indent-style = "space"
+
+# Like Black, respect magic trailing commas.
+skip-magic-trailing-comma = false
+
+# Like Black, automatically detect the appropriate line ending.
+line-ending = "auto"
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index 3bf3474..90bce37 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,9 +1,9 @@
-aiogram==2.25.1
+aiogram==2.23.1
 aioredis~=2.0
-environs~=9.5
+environs~=9.0
 git+https://github.com/TimNekk/aiogram_broadcaster.git
 gino==1.0.1
-loguru==0.7.0
-alembic==1.11.1
-psycopg2==2.9.6
+loguru==0.6.0
+alembic==1.8.1
+psycopg2==2.9.3
 validators==0.20.0
diff --git a/tgbot/middlewares/subscription.py b/tgbot/middlewares/subscription.py
index 1fdbfa7..73ba456 100644
--- a/tgbot/middlewares/subscription.py
+++ b/tgbot/middlewares/subscription.py
@@ -24,14 +24,14 @@ async def setup_channels(cls, dp: Dispatcher, channels_ids: list[int]) -> None:
     async def on_process_message(self, message: Message, data: dict) -> None:
         user = data.get('user')
         if not user:
-            raise KeyError(f"User not found in data")
+            raise KeyError("User not found in data")
 
         await self.check_subscriptions(message, user=user)
 
     async def on_process_callback_query(self, call: CallbackQuery, data: dict) -> None:
         user = data.get('user')
         if not user:
-            raise KeyError(f"User not found in data")
+            raise KeyError("User not found in data")
 
         await self.check_subscriptions(call.message, user=user,
                                        call=call, callback_data=data.get("callback_data"))
diff --git a/tgbot/states/__init__.py b/tgbot/states/__init__.py
index 6192fb0..eeb5b95 100644
--- a/tgbot/states/__init__.py
+++ b/tgbot/states/__init__.py
@@ -1,2 +1,7 @@
 from .send_all import SendAllState
 from .ping import PingState
+
+__all__ = [
+    "SendAllState",
+    "PingState"
+]