diff --git a/.gitignore b/.gitignore
index a3068b3..268d9f2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -565,6 +565,5 @@ FodyWeavers.xsd
 
 # Hide internal database and it's backups
 *.db
-# Hide token file
-token
-token.devel
\ No newline at end of file
+# Hide config file
+config.ini
\ No newline at end of file
diff --git a/bot.py b/bot.py
index 2561d8c..cf9fbea 100644
--- a/bot.py
+++ b/bot.py
@@ -3,90 +3,31 @@
 # SPDX-License-Identifier: AGPL-3.0-or-later
 
 import telebot
-import re
 import time
 import datetime as dt
 import sys
 import signal
 import os
 import subprocess
-import pickle as p
+import configparser
 from os import path
 from sys import stderr, stdout, stdin
 from threading import Thread
 
+filename = "config.ini"
+config = configparser.ConfigParser()
+config.read(filename)
 
-db = {}
-
-def save_db(dbfo = ".db"):
-    global db
-    try:
-        with open(dbfo, "wb") as fo:
-            p.dump(db, fo)
-    except:
-        stderr.write("Не удалось записать базу!")
-        sys.exit(1)
-
-def load_db(dbfi = ".db"):
-    global db
-    if not path.exists(dbfi):
-        save_db()
-        return
-    try:
-        with open(dbfi, "rb") as fi:
-            db = p.load(fi)
-    except:
-        stderr.write("Не удалось прочитать базу, пробуем сохранить…")
-        save_db()
-
-def write_db(field: str, value: any, data = None):
-    global db
-    head = False
-    if data == None:
-        data = db
-        head = True
-    field = field.split(".")
-    if len(field) == 1:
-        data[field[0]] = value
-    else:
-        if field[0] not in data or data[field[0]] is None:
-            data[field[0]] = {}
-        if type(data[field[0]]) is not dict:
-            raise ValueError("Поле не является группой.")
-        data[field[0]] = write_db('.'.join(field[1:]), value, data[field[0]])
-    save_db()
-    if head:
-        db = data
-    return data
-
-def read_db(field: str, default = None, data = None) -> any:
-    global db
-    if data == None:
-        data = db
-    field = field.split(".")
-    if field[0] not in data:
-        return default
-    if len(field) == 1:
-        return data[field[0]]
-    else:
-        return read_db('.'.join(field[1:]), default, data[field[0]])
-    
-def pop_db(field: str):
-    global db
-    ret = read_db(field)
-    field = field.split(".")
-    val = read_db('.'.join(field[:-1]))
-    if type(val) is not dict:
-        return
-    val.pop(field[-1])
-    write_db('.'.join(field[:-1]), val)
-    return ret
- 
-
+# TODO more backends
+from pickle_db import *
 load_db()
-write_db("about.version", "v1.0rc4")
+__cur_version = "v1.0rc5"
+__version = read_db("about.version", __cur_version)
+write_db("about.updatedfrom", __version)
+write_db("about.version", __cur_version)
 write_db("about.author", "electromagneticcyclone")
 write_db("about.tester", "angelbeautifull")
+write_db("about.source", "https://git.disroot.org/electromagneticcyclone/duty-board-dog")
 if (read_db("about.host") is None) and __debug__:
     stdout.write("Введите username хоста: ")
     stdout.flush()
@@ -95,15 +36,32 @@ if (read_db("about.host") is None) and __debug__:
 
 try:
     bot = None
-    filename = "token.devel" if __debug__ else "token"
-    with open(filename, encoding = "utf-8") as fi:
-        for i in fi:
-            i = i.strip()
-            pattern = re.compile("^[\\d]{10}:[\\w\\d\\-\\+\\*]{35}$")
-            matches = pattern.fullmatch(i) is not None
-            if matches:
-                bot = telebot.TeleBot(i, parse_mode = "MarkdownV2")
-                break
+    if __version != __cur_version:
+        import re
+        if path.exists("token"):
+            with open("token", encoding = "utf-8") as fi:
+                for i in fi:
+                    i = i.strip()
+                    pattern = re.compile("^[\\d]{10}:[\\w\\d\\-\\+\\*]{35}$")
+                    matches = pattern.fullmatch(i) is not None
+                    if matches:
+                        config['tokens']['prod'] = i
+                        config.write(filename)
+                        break
+            os.remove("token")
+        if path.exists("token.devel"):
+            with open("token.devel", encoding = "utf-8") as fi:
+                for i in fi:
+                    i = i.strip()
+                    pattern = re.compile("^[\\d]{10}:[\\w\\d\\-\\+\\*]{35}$")
+                    matches = pattern.fullmatch(i) is not None
+                    if matches:
+                        config['tokens']['devel'] = i
+                        config.write(filename)
+                        break
+            os.remove("token.devel")
+    bot = telebot.TeleBot(  config['tokens']['devel' if __debug__ else 'prod'],
+                            parse_mode = "MarkdownV2")
     if bot is None:
         stderr.write("В файле нет токена\n")
         raise Exception
@@ -111,6 +69,7 @@ except:
     stderr.write("Ошибка чтения файла токена\n")
     sys.exit(1)
 
+
 def get_time(forum: int):
     return dt.datetime.now(dt.UTC) \
          + dt.timedelta(hours = read_db(str(forum) + ".settings.timezone", 3))
@@ -251,6 +210,89 @@ def insert_user_in_current_order(forum: int, uid) -> bool:
         write_db(str(forum) + ".rookies.order",  list(order.keys())[1:])
         return True
 
+def parse_dates(forum: int, args):
+    dates = []
+    OK = True
+    for a in args:
+        if a.lower() == "сегодня":
+            dates.append(get_time(forum).date())
+            continue
+        if a.lower() == "завтра":
+            dates.append(get_time(forum).date() + dt.timedelta(days=1))
+            continue
+        if a.lower() == "послезавтра":
+            dates.append(get_time(forum).date() + dt.timedelta(days=2))
+            continue
+        if a.lower() == "вчера":
+            dates.append(get_time(forum).date() - dt.timedelta(days=1))
+            continue
+        if a.lower() == "позавчера":
+            dates.append(get_time(forum).date() - dt.timedelta(days=2))
+            continue
+        d = a.split('.')
+        a_dates = []
+        if len(d) in (2, 3):
+            try:
+                d = list(map(int, d))
+            except:
+                print("Ne ok")
+                OK = False
+            if OK:
+                cur_date = get_time(forum).date() - dt.timedelta(days=1)
+                cur_year = cur_date.year
+                if len(d) == 2:
+                    years = [cur_year, cur_year + 1]
+                else:
+                    years = [(cur_year // 100 * 100) + d[2] if (d[2] < 100) else d[2]]
+                for y in years:
+                    try:
+                        a_dates.append(dt.datetime(y, d[1], d[0]).date())
+                    except:
+                        pass
+                a_dates = sorted(filter(lambda x: cur_date + dt.timedelta(days=120) > x > cur_date, a_dates))
+                if len(a_dates) == 0:
+                    OK = False
+        else:
+            OK = False
+        if OK:
+            dates.append(a_dates[0])
+        else:
+            return a
+    return dates
+
+def mod_days(message, target, neighbour):
+    forum = message.chat.id
+    chat = get_chat(message)
+    if chat is not None:
+        if antispam(message, chat, forum):
+            return
+        if check_if_admin(message):
+            args = message.text.split()[1:]
+            if len(args) == 0:
+                dates = [get_time(forum).date()]
+            else:
+                dates = parse_dates(forum, args)
+                if type(dates) is str:
+                    bot.reply_to(chat, telebot.formatting.escape_markdown(dates)
+                  + " — это точно дата из ближайшего будущего?")
+                    return
+                if dates is None:
+                    bot.reply_to(chat, "Нечего добавлять")
+                    return
+            t = read_db(target)
+            if t is None:
+                t = []
+            n = read_db(neighbour)
+            if n is None:
+                n = []
+            write_db(neighbour, list(filter(lambda x: x not in dates, n)))
+            write_db(target, list(sorted(set(t + dates))))
+            if read_db(str(forum) + ".settings.delete_messages"):
+                bot.delete_message(forum, message.id)
+            bot.reply_to(chat,
+            "Добавил " + telebot.formatting.escape_markdown(
+                ", ".join(['.'.join(map(str, (d.day, d.month, d.year))) for d in dates])))
+
 timeout = None
 caution = True
 def antispam(message, chat, forum):
@@ -320,9 +362,26 @@ def help(message):
             + "/stop — остановить дежурства\n"
             + "/begin \\[@\\] — начать сначала с определённого студента")
 
-@bot.message_handler(commands=['exec'])
-def exec_bot(message):
-    if __debug__:
+if __debug__:
+    def pretty(d, indent=0):
+       for key, value in d.items():
+          print(' ' * indent + str(key))
+          if isinstance(value, dict):
+             pretty(value, indent+1)
+          else:
+             print(' ' * (indent+1) + str(value))
+
+    @bot.message_handler(commands=['info'])
+    def info(message):
+        forum = message.chat.id
+        chat = get_chat(message, True)
+        if chat is not None:
+            bot.delete_message(forum, message.id)
+            if message.from_user.username == read_db("about.host"):
+                pretty(db)
+
+    @bot.message_handler(commands=['exec'])
+    def exec_bot(message):
         forum = message.chat.id
         chat = get_chat(message, True)
         if chat is not None:
@@ -332,24 +391,6 @@ def exec_bot(message):
             else:
                 bot.delete_message(forum, message.id)
 
-def pretty(d, indent=0):
-   for key, value in d.items():
-      print(' ' * indent + str(key))
-      if isinstance(value, dict):
-         pretty(value, indent+1)
-      else:
-         print(' ' * (indent+1) + str(value))
-
-@bot.message_handler(commands=['info'])
-def info(message):
-    if __debug__:
-        forum = message.chat.id
-        chat = get_chat(message, True)
-        if chat is not None:
-            bot.delete_message(forum, message.id)
-            if message.from_user.username == read_db("about.host"):
-                pretty(db)
-
 @bot.message_handler(commands=['fuck', 'fuck_you', 'fuck-you', 'fuckyou'])
 def rude(message):
     forum = message.chat.id
@@ -762,89 +803,6 @@ def calendar(message):
       + "*Рабочие:*\n" + telebot.formatting.escape_markdown(
             "\n".join(['.'.join(map(str, (d.day, d.month, d.year))) for d in work])))
 
-def parse_dates(forum: int, args):
-    dates = []
-    OK = True
-    for a in args:
-        if a.lower() == "сегодня":
-            dates.append(get_time(forum).date())
-            continue
-        if a.lower() == "завтра":
-            dates.append(get_time(forum).date() + dt.timedelta(days=1))
-            continue
-        if a.lower() == "послезавтра":
-            dates.append(get_time(forum).date() + dt.timedelta(days=2))
-            continue
-        if a.lower() == "вчера":
-            dates.append(get_time(forum).date() - dt.timedelta(days=1))
-            continue
-        if a.lower() == "позавчера":
-            dates.append(get_time(forum).date() - dt.timedelta(days=2))
-            continue
-        d = a.split('.')
-        a_dates = []
-        if len(d) in (2, 3):
-            try:
-                d = list(map(int, d))
-            except:
-                print("Ne ok")
-                OK = False
-            if OK:
-                cur_date = get_time(forum).date() - dt.timedelta(days=1)
-                cur_year = cur_date.year
-                if len(d) == 2:
-                    years = [cur_year, cur_year + 1]
-                else:
-                    years = [(cur_year // 100 * 100) + d[2] if (d[2] < 100) else d[2]]
-                for y in years:
-                    try:
-                        a_dates.append(dt.datetime(y, d[1], d[0]).date())
-                    except:
-                        pass
-                a_dates = sorted(filter(lambda x: cur_date + dt.timedelta(days=120) > x > cur_date, a_dates))
-                if len(a_dates) == 0:
-                    OK = False
-        else:
-            OK = False
-        if OK:
-            dates.append(a_dates[0])
-        else:
-            return a
-    return dates
-
-def mod_days(message, target, neighbour):
-    forum = message.chat.id
-    chat = get_chat(message)
-    if chat is not None:
-        if antispam(message, chat, forum):
-            return
-        if check_if_admin(message):
-            args = message.text.split()[1:]
-            if len(args) == 0:
-                dates = [get_time(forum).date()]
-            else:
-                dates = parse_dates(forum, args)
-                if type(dates) is str:
-                    bot.reply_to(chat, telebot.formatting.escape_markdown(dates)
-                  + " — это точно дата из ближайшего будущего?")
-                    return
-                if dates is None:
-                    bot.reply_to(chat, "Нечего добавлять")
-                    return
-            t = read_db(target)
-            if t is None:
-                t = []
-            n = read_db(neighbour)
-            if n is None:
-                n = []
-            write_db(neighbour, list(filter(lambda x: x not in dates, n)))
-            write_db(target, list(sorted(set(t + dates))))
-            if read_db(str(forum) + ".settings.delete_messages"):
-                bot.delete_message(forum, message.id)
-            bot.reply_to(chat,
-            "Добавил " + telebot.formatting.escape_markdown(
-                ", ".join(['.'.join(map(str, (d.day, d.month, d.year))) for d in dates])))
-
 @bot.message_handler(commands=['skip'])
 def skip_days(message):
     forum = message.chat.id
@@ -1169,13 +1127,6 @@ def set_timezone(message):
 def get_hours(forum: int) -> list:
     utc_range = (8, 20)
     return utc_range
-    # Obsoleted by `get_time`
-    # tz = read_db(str(forum) + ".settings.timezone", 3)
-    # utc_range = tuple(map(lambda x: (x - tz) % 24, utc_range))
-    # if utc_range[0] > utc_range[1]:
-    #     return list(range(utc_range[0], 24)) + list(range(0, utc_range[1]))
-    # else:
-    #     return list(range(utc_range[0], utc_range[1]))
 
 def stack_update(forum: int, force_reset = False):
     now = get_time(forum)
@@ -1261,6 +1212,17 @@ def update(forum: int):
             write_db(str(forum) + ".schedule.last_notification_date", now_date)
             remind_users(forum)
 
+def update_notify(forum: int):
+    bot.reply_to(get_chat(forum),
+    "Обновился до версии " + telebot.formatting.escape_markdown(__version))
+
+
+if __version != __cur_version:
+    for i in db.keys():
+        try:
+            update_notify(int(i))
+        except ValueError:
+            pass
 
 def process1():
     bot.infinity_polling(none_stop=True)
diff --git a/token.example b/config.example.ini
similarity index 53%
rename from token.example
rename to config.example.ini
index 8d335d4..21c71bb 100644
--- a/token.example
+++ b/config.example.ini
@@ -2,5 +2,6 @@
 #
 # SPDX-License-Identifier: Unlicense
 
-# Enter your token in the `token` file
-0000000000:ooooooooooooooooooooooooooooooooooo
\ No newline at end of file
+[tokens]
+# Enter your token in the `config.ini` file
+prod  = 0000000000:ooooooooooooooooooooooooooooooooooo
\ No newline at end of file
diff --git a/pickle_db.py b/pickle_db.py
new file mode 100644
index 0000000..67a0d11
--- /dev/null
+++ b/pickle_db.py
@@ -0,0 +1,74 @@
+# SPDX-FileCopyrightText: 2023 Egor Guslyancev <electromagneticcyclone@disroot.org>
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+import sys
+import pickle as p
+from os import path
+from sys import stderr, stdout, stdin
+
+db = {}
+
+def save_db(dbfo = ".db"):
+    global db
+    try:
+        with open(dbfo, "wb") as fo:
+            p.dump(db, fo)
+    except:
+        stderr.write("Не удалось записать базу!")
+        sys.exit(1)
+
+def load_db(dbfi = ".db"):
+    global db
+    if not path.exists(dbfi):
+        save_db()
+        return
+    try:
+        with open(dbfi, "rb") as fi:
+            db = p.load(fi)
+    except:
+        stderr.write("Не удалось прочитать базу, пробуем сохранить…")
+        save_db()
+
+def write_db(field: str, value: any, data = None):
+    global db
+    head = False
+    if data == None:
+        data = db
+        head = True
+    field = field.split(".")
+    if len(field) == 1:
+        data[field[0]] = value
+    else:
+        if field[0] not in data or data[field[0]] is None:
+            data[field[0]] = {}
+        if type(data[field[0]]) is not dict:
+            raise ValueError("Поле не является группой.")
+        data[field[0]] = write_db('.'.join(field[1:]), value, data[field[0]])
+    save_db()
+    if head:
+        db = data
+    return data
+
+def read_db(field: str, default = None, data = None) -> any:
+    global db
+    if data == None:
+        data = db
+    field = field.split(".")
+    if field[0] not in data:
+        return default
+    if len(field) == 1:
+        return data[field[0]]
+    else:
+        return read_db('.'.join(field[1:]), default, data[field[0]])
+    
+def pop_db(field: str):
+    global db
+    ret = read_db(field)
+    field = field.split(".")
+    val = read_db('.'.join(field[:-1]))
+    if type(val) is not dict:
+        return
+    val.pop(field[-1])
+    write_db('.'.join(field[:-1]), val)
+    return ret
\ No newline at end of file