diff --git a/pyproject.toml b/pyproject.toml
index 63782a2..55bcfb1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,7 +20,7 @@ license = "GPL-3.0-only"
 readme = "README.md"
 
 [tool.poetry.dependencies]
-python = "^3.7,^3.8"
+python = ">=3.7"
 aiocache = "^0.11.1"
 aiogram = "^2.6.1"
 marshmallow = "^3.5.0"
@@ -29,7 +29,7 @@ sentry-sdk = "^0.14.2"
 structlog = "^20.1.0"
 structlog-sentry = "^1.2.1"
 aiohttp = "^3.6.2"
-ujson = "^1.35"
+ujson = "^2.0.2"
 
 [tool.poetry.dev-dependencies]
 aioresponses = "^0.6.3"
@@ -42,19 +42,13 @@ flake8-debugger = "^3.2.1"
 flake8-print = "^3.1.4"
 flake8-quotes = "^2.1.1"
 flake8-todo = "^0.7"
-pep8-naming = "^0.9.1"
+pep8-naming = "^0.10.0"
 pydocstyle = "^5.0.2"
-mypy = "^0.761"
-coverage = "^5.0.3"
-pytest = "^5.3.5"
+mypy = "^0.770"
+pytest = "^5.3"
 pytest-cov = "^2.8.1"
-pytest-sugar = "^0.9.2"
 pytest-aiohttp = "^0.3.0"
 pytest-timeout = "^1.3.4"
 
-[build-system]
-requires = ["poetry>=1.0"]
-build-backend = "poetry.masonry.api"
-
 [tool.poetry.scripts]
 bot = "tg_odesli_bot.bot:main"