diff --git a/.gitignore b/.gitignore
index d306159..4bb8eee 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,9 @@
 
 __pycache__
 .mypy_cache
+.DS_Store
 
 venv
-config.yaml
\ No newline at end of file
+config.yaml
+
+CertSSL
\ No newline at end of file
diff --git a/config_sample.yaml b/config_sample.yaml
index 9e09ebb..fd02a56 100644
--- a/config_sample.yaml
+++ b/config_sample.yaml
@@ -1,4 +1,6 @@
-debug: false           # debug logging
-timeout: 2             # http requests timeout
-telegram_token:        # telegram bot token
-kekkai_instance: 'https://kekkai-api.redume.su/'
\ No newline at end of file
+webhook:
+    secret_token: 'jTDnK6nuEZ654b'
+    base_url: 'example.com'
+    path: '/webhook'
+telegram_token:
+kekkai_instance: 'https://kekkai-api.redume.su'
\ No newline at end of file
diff --git a/docker-compose.yaml b/docker-compose.yaml
index a00bb48..c17e976 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -2,4 +2,19 @@ services:
   shirino:
     build: .
     image: ghcr.io/shirino/shirino:latest
-    restart: unless-stopped
\ No newline at end of file
+    restart: unless-stopped
+    volumes:
+      - './config.yaml:/config.yaml'
+
+  nginx:
+    image: nginx:latest
+    ports:
+      - '80:80'
+      - '443:443'
+    volumes:
+      - ./nginx.conf:/etc/nginx/nginx.conf
+      - ./CertSSL:/etc/nginx/ssl
+
+volumes:
+  shirino:
+    driver: local
\ No newline at end of file
diff --git a/function/get_chart.py b/function/get_chart.py
deleted file mode 100644
index 5c24938..0000000
--- a/function/get_chart.py
+++ /dev/null
@@ -1,27 +0,0 @@
-import yaml
-import requests
-from http import HTTPStatus
-
-config = yaml.safe_load(open('config.yaml'))
-
-def get_chart(from_currency: str, conv_currency: str) -> (dict, None):
-    try:
-        response = requests.get(f'{config["kekkai_instance"]}/api/getChart/week/', params={
-            'from_currency': from_currency,
-            'conv_currency': conv_currency
-        }, timeout=3)
-        
-        if not HTTPStatus(response.status_code).is_success:
-            return None
-
-        try:
-            data = response.json()
-            return data.get('message', None)
-        except ValueError:
-            return None
-    except requests.exceptions.ConnectionError:
-        print("API connection error.")
-        return None
-    except requests.exceptions.RequestException as e:
-        print(f"There was an error: {e}")
-        return None
diff --git a/functions/convert.py b/functions/convert.py
new file mode 100644
index 0000000..8d1931a
--- /dev/null
+++ b/functions/convert.py
@@ -0,0 +1,70 @@
+import json
+import re
+from datetime import datetime
+from decimal import Decimal
+from http import HTTPStatus
+
+import aiohttp
+import yaml
+
+from utils.format_number import format_number
+
+config = yaml.safe_load(open('config.yaml'))
+
+class Converter:
+    def __init__(self):
+        self.amount: float = 1.0
+        self.conv_amount: float = 0.0
+        self.from_currency: str = ''
+        self.conv_currency: str = ''
+    
+    async def convert(self) -> None:
+        if not await self.kekkai():
+            await self.ddg()
+
+        self.conv_amount = format_number(Decimal(self.conv_amount))
+
+
+    async def kekkai(self) -> bool:
+        date = datetime.today().strftime('%Y-%m-%d')
+
+        async with aiohttp.ClientSession(timeout=aiohttp.ClientTimeout(total=3)) as session:
+            async with session.get(f'{config['kekkai_instance']}/api/getRate/', params={
+                'from_currency': self.from_currency,
+                'conv_currency': self.conv_currency,
+                'date': date,
+                'conv_amount': self.amount
+            }) as res:
+                if not HTTPStatus(res.status).is_success:
+                    return False
+
+                data = await res.json()
+                self.conv_amount = data.get('conv_amount', 0.0)
+
+                return True
+
+
+    async def ddg(self) -> None:
+        async with aiohttp.ClientSession(timeout=aiohttp.ClientTimeout(total=3)) as session:
+            async with session.get(
+                'https://duckduckgo.com/js/spice/currency/'
+                f'{self.amount}/{self.from_currency}/{self.conv_currency}'
+                ) as res:
+
+                data_text = await res.text()
+            
+                data = json.loads(re.findall(r'\(\s*(.*)\s*\);$', data_text)[0])
+
+                for key in ['terms', 'privacy', 'timestamp']:
+                    data.pop(key, None)
+
+                if not data.get('to'):
+                    raise RuntimeError('Failed to get the exchange rate from DuckDuckGo')
+
+                conv = data.get('to')[0]
+                conv_amount = conv.get('mid')
+
+                if conv_amount is None:
+                    raise RuntimeError('Error when converting currency via DuckDuckGo')
+
+                self.conv_amount = float(conv_amount)
diff --git a/functions/create_chart.py b/functions/create_chart.py
new file mode 100644
index 0000000..117dd4d
--- /dev/null
+++ b/functions/create_chart.py
@@ -0,0 +1,19 @@
+import yaml
+import aiohttp
+
+from http import HTTPStatus
+
+config = yaml.safe_load(open('config.yaml'))
+
+async def create_chart(from_currency: str, conv_currency: str) -> (dict, None):
+    async with aiohttp.ClientSession(timeout=aiohttp.ClientTimeout(total=3)) as session:
+        async with session.get(f'{config["kekkai_instance"]}/api/getChart/month/', params={
+            'from_currency': from_currency,
+            'conv_currency': conv_currency
+        }) as res:
+            if not HTTPStatus(res.status).is_success:
+                return None
+            
+            data = await res.json()
+
+            return data.get('message', None)
diff --git a/main.py b/main.py
index 4889b47..bc807dd 100644
--- a/main.py
+++ b/main.py
@@ -1,104 +1,128 @@
-from aiogram import Bot, Dispatcher, types
+from functions.convert import Converter
+from utils.format_number import format_number
+from utils.inline_query import reply
+from functions.create_chart import create_chart
 
 import yaml
-import asyncio
+
+from aiohttp import web
+
+from aiogram import Bot, Dispatcher, Router, types
+from aiogram.client.default import DefaultBotProperties
+from aiogram.enums import ParseMode
+from aiogram.webhook.aiohttp_server import SimpleRequestHandler, setup_application
+from aiogram.filters import CommandStart
 
 import hashlib
 
-from function.get_chart import get_chart
-from utils.convert import Converter
-from utils.format_number import format_number
-from function.inline_query import reply
-
-dp = Dispatcher()
 config = yaml.safe_load(open('config.yaml'))
+bot = Bot(token=config['telegram_token'], default=DefaultBotProperties(parse_mode=ParseMode.HTML))
 
-@dp.inline_query()
+router = Router()
+
+@router.message(CommandStart())
+async def start(message: types.Message):
+    get_bot = await bot.get_me()
+    await message.reply(
+        'Shirino is a telegram bot for converting fiat or cryptocurrency. '
+        'The example of use occurs via inline query:\n'
+        f'`@{get_bot.username} USD RUB` \n'
+        f'`@{get_bot.username} 12 USD RUB` \n\n'
+        '[Source Code](https://github.com/Redume/Shirino)',
+        parse_mode='markdown'
+    )
+
+
+@router.inline_query()
 async def currency(query: types.InlineQuery) -> None:
-    global from_currency, conv_currency
+    text = query.query.lower()
+    args = text.split()
+    result_id = hashlib.md5(text.encode()).hexdigest()
 
-    try:
-        text = query.query.lower()
-        args = text.split()
-        result_id = hashlib.md5(text.encode()).hexdigest()
+    get_bot = await bot.get_me()
 
-        conv = Converter()
+    if len(args) < 2:
+        return await reply(result_id,
+                            [("2 or 3 arguments are required.",
+                            f'@{get_bot.username} USD RUB \n'
+                            f'@{get_bot.username} 12 USD RUB',
+                            None, None)],
+                            query)
 
-        if len(args) < 2:
-            return await reply(result_id, 
-                                [("2 or 3 arguments are required.", 
-                                '@shirino_bot USD RUB \n'
-                                '@shirino_bot 12 USD RUB',
-                                  None, None)],
-                                query)
+    conv = Converter()
 
-        if len(args) == 3:
+    from_currency, conv_currency = '', ''
+
+    if len(args) == 3:
+        try:
             conv.amount = float(args[0].replace(',', '.'))
-            from_currency = args[1]
-            conv_currency = args[2]
-        elif len(args) == 2:
-            from_currency = args[0]
-            conv_currency = args[1]
-        else:
-            return await reply(result_id,
-                               [
-                                   (
-                                       'The source and target currency could not be determined.',
-                                       None,
-                                       None
-                                   )
-                               ],
-                               query)
+            if conv.amount < 0:
+                return await reply(result_id, [("Negative amounts are not supported.", None, None)], query)
 
-        if not from_currency or not conv_currency:
-            return await reply(result_id, [('The currency exchange rate could not be found.', None, None)], query)
+        except ValueError:
+            return await reply(result_id, [("Please enter a valid number for the amount.",
+                                            f'@{get_bot.username} USD RUB \n'
+                                            f'@{get_bot.username} 12 USD RUB',
+                                            None, None)], query)
 
-        conv.from_currency = from_currency.upper()
-        conv.conv_currency = conv_currency.upper()
-        conv.convert()
+        from_currency = args[1]
+        conv_currency = args[2]
+    elif len(args) == 2:
+        from_currency = args[0]
+        conv_currency = args[1]
+    else:
+        return await reply(result_id,
+                            [(
+                                'The source and target currency could not be determined.',
+                                None, None
+                            )],
+                            query)
 
-        chart = get_chart(from_currency, conv_currency)
+    conv.from_currency = from_currency.upper()
+    conv.conv_currency = conv_currency.upper()
+    try:
+        await conv.convert()
+    except RuntimeError as e:
+        return await reply(result_id, [('The currency exchange rate could not be determined', None, None)], query)
 
-        if not chart:
-            return await reply(result_id,
-                               [
-                                   (
-                                       f'{format_number(conv.amount)} {conv.from_currency} '
-                                       f'= {conv.conv_amount} {conv.conv_currency}' \
-                                       f'\n{f'[График]({chart})' if chart else ''}',
-                                       None,
-                                       chart
-                                   )
-                               ],
-                               query)
+    chart = await create_chart(from_currency, conv_currency)
 
-        await reply(result_id,
-                    [
-                        (
-                            f'{format_number(conv.amount)} {conv.from_currency} '
-                            f'= {conv.conv_amount} {conv.conv_currency}' \
-                            f'\n{f'[График]({chart})' if chart else ''}',
-                            None,
-                            chart
-                        ),
-                        (
-                            f'{format_number(conv.amount)} {conv.from_currency} '
-                            f'= {conv.conv_amount} {conv.conv_currency}',
-                            None,
-                            None
-                        )
-                    ],
-                    query)
+    message = f'{format_number(conv.amount)} {conv.from_currency} = {conv.conv_amount} {conv.conv_currency}'
 
-    except Exception as e:
-        print(e)
+    results = [(message, None, None)]
+
+    if chart:
+        results.insert(0, (f'{message}\n[График]({chart})', None, chart))
+
+    await reply(result_id, results, query)
 
 
+async def on_startup(bot: Bot) -> None:
+    await bot.set_webhook(
+        f"{config['webhook']['base_url']}{config['webhook']['path']}", 
+        secret_token=config['webhook']['secret_token'],
+        allowed_updates=['inline_query', 'message']
+        )
 
-async def main() -> None:
-    bot = Bot(config['telegram_token'])
-    await dp.start_polling(bot)
+
+def main() -> None:
+    dp = Dispatcher()
+
+    dp.include_router(router)
+    dp.startup.register(on_startup)
+
+    app = web.Application()
+    webhook_requests_handler = SimpleRequestHandler(
+        dispatcher=dp,
+        bot=bot,
+        secret_token=config['webhook']['secret_token']
+    )
+    webhook_requests_handler.register(app, path=config['webhook']['path'])
+
+    setup_application(app, dp, bot=bot)
+
+    web.run_app(app, host='0.0.0.0', port=443)
 
 
 if __name__ == '__main__':
-    asyncio.run(main())
+    main()
diff --git a/nginx.conf b/nginx.conf
new file mode 100644
index 0000000..f70b053
--- /dev/null
+++ b/nginx.conf
@@ -0,0 +1,29 @@
+events {}
+
+http {
+    server {
+        listen 80;
+        server_name example.com;
+
+        return 301 https://$host$request_uri$is_args$args;
+    }
+
+    server {
+        listen 443 ssl;
+        http2 on;
+        server_name example.com;
+
+        ssl_certificate /etc/nginx/ssl/fullchain.pem;
+        ssl_certificate_key /etc/nginx/ssl/privkey.pem;
+
+        location /webhook {
+            proxy_pass http://shirino:443;
+            proxy_set_header Host $host;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header X-Forwarded-Proto $scheme;
+            proxy_redirect off;
+            proxy_buffering off;
+        }
+    }
+}
diff --git a/requirements.txt b/requirements.txt
index 4d7e12c..21259b5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,3 @@
 aiohttp~=3.9.5
-requests~=2.32.3
 PyYAML~=6.0.1
 aiogram~=3.15.0
\ No newline at end of file
diff --git a/utils/convert.py b/utils/convert.py
deleted file mode 100644
index c7cee9e..0000000
--- a/utils/convert.py
+++ /dev/null
@@ -1,78 +0,0 @@
-import yaml
-import requests
-
-import json
-import re
-
-from datetime import datetime
-from http import HTTPStatus
-
-from decimal import Decimal, ROUND_DOWN
-from utils.format_number import format_number
-
-config = yaml.safe_load(open('config.yaml'))
-
-
-class Converter:
-    def __init__(self):
-        self.amount: float = 1.0
-        self.conv_amount: float = 0.0
-        self.from_currency: str = ''
-        self.conv_currency: str = ''
-
-
-    def convert(self) -> None:
-        if not self.kekkai() and not self.ddg():
-            raise RuntimeError('Failed to convert via Kekkai or DDG')
-
-        number = Decimal(str(self.conv_amount))
-        self.conv_amount = format_number(number.quantize(Decimal('1.00'), rounding=ROUND_DOWN))
-
-
-    def ddg(self) -> bool:
-        try:
-            res = requests.get(
-                f'https://duckduckgo.com/js/spice/currency/'
-                f'{self.amount}/{self.from_currency}/{self.conv_currency}',
-                timeout=3
-            )
-
-            data = json.loads(re.findall(r'\(\s*(.*)\s*\);$', res.text)[0])
-
-            for key in ['terms', 'privacy', 'timestamp']:
-                data.pop(key, None)
-
-            if not data.get('to'):
-                return False
-
-            self.conv_amount = float(data['to'][0].get('mid', 0.0))
-            return True
-
-        except (requests.exceptions.RequestException, json.JSONDecodeError, IndexError) as e:
-            print(f"Error when requesting DDG: {e}")
-            return False
-
-    def kekkai(self) -> bool:
-        date = datetime.today().strftime('%Y-%m-%d')
-        try:
-            res = requests.get(
-                f"{config['kekkai_instance']}/api/getRate/",
-                params={
-                    'from_currency': self.from_currency,
-                    'conv_currency': self.conv_currency,
-                    'date': date,
-                    'conv_amount': self.amount
-                },
-                timeout=3
-            )
-
-            if res.status_code != HTTPStatus.OK:
-                return False
-
-            data = res.json()
-            self.conv_amount = data.get('conv_amount', 0.0)
-            return True
-
-        except (requests.exceptions.ConnectionError, json.JSONDecodeError) as e:
-            print(f"Error when querying Kekkai: {e}")
-            return False
diff --git a/utils/format_number.py b/utils/format_number.py
index 8d475b9..7759bab 100644
--- a/utils/format_number.py
+++ b/utils/format_number.py
@@ -1,14 +1,14 @@
+from decimal import Decimal
+
 def format_number(number):
-    number_str = str(number)
+    number = Decimal(str(number))
 
-    if '.' in number_str:
-        integer_part, fractional_part = number_str.split('.')
-    else:
-        integer_part, fractional_part = number_str, ''
+    formatted_integer_part = '{:,.0f}'.format(number // 1).replace(',', ' ')
+    fractional_part = f"{number % 1:.30f}".split('.')[1]
 
-    formatted_integer_part = '{:,}'.format(int(integer_part)).replace(',', ' ')
-
-    if fractional_part:
-        return formatted_integer_part + '.' + fractional_part
-    else:
-        return formatted_integer_part
+    if int(fractional_part) == 0:
+        return formatted_integer_part + ''
+    
+    significant_start = next((i for i, char in enumerate(fractional_part) if char != '0'), len(fractional_part))
+    result_fractional = fractional_part[:significant_start + 3]
+    return formatted_integer_part + '.' + result_fractional
diff --git a/function/inline_query.py b/utils/inline_query.py
similarity index 88%
rename from function/inline_query.py
rename to utils/inline_query.py
index 5aed88f..282ad95 100644
--- a/function/inline_query.py
+++ b/utils/inline_query.py
@@ -1,7 +1,6 @@
-import re
-
 from aiogram import types
 
+import re
 
 async def reply(result_id: str, args: list, query: types.InlineQuery) -> None:
     if not args:
@@ -17,7 +16,7 @@ async def reply(result_id: str, args: list, query: types.InlineQuery) -> None:
 
         article = types.InlineQueryResultArticle(
             id=f"{result_id}_{idx}",
-            title=re.sub(r'\[([^\[]+)\]\([^\)]+\)', '', title).replace('График', ''),
+            title=re.sub(r'\bГрафик\b|\[([^\]]+)\]\([^)]+\)', '', title, flags=re.IGNORECASE),
             thumbnail_url=img,
             description=description,
             input_message_content=types.InputTextMessageContent(