diff --git a/poetry.lock b/poetry.lock
index 21dfe2e..b5dac82 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -29,17 +29,9 @@ python-versions = ">=3.5.0"
 typing-extensions = {version = ">=3.7.4.3", markers = "python_version < \"3.8\""}
 
 [package.extras]
-dev = ["Cython (>=0.29.20,<0.30.0)", "pytest (>=3.6.0)", "Sphinx (>=1.7.3,<1.8.0)", "sphinxcontrib-asyncio (>=0.2.0,<0.3.0)", "sphinx-rtd-theme (>=0.2.4,<0.3.0)", "pycodestyle (>=2.5.0,<2.6.0)", "flake8 (>=3.7.9,<3.8.0)", "uvloop (>=0.14.0,<0.15.0)"]
-docs = ["Sphinx (>=1.7.3,<1.8.0)", "sphinxcontrib-asyncio (>=0.2.0,<0.3.0)", "sphinx-rtd-theme (>=0.2.4,<0.3.0)"]
-test = ["pycodestyle (>=2.5.0,<2.6.0)", "flake8 (>=3.7.9,<3.8.0)", "uvloop (>=0.14.0,<0.15.0)"]
-
-[[package]]
-name = "atomicwrites"
-version = "1.4.0"
-description = "Atomic file writes."
-category = "dev"
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+dev = ["Cython (>=0.29.20,<0.30.0)", "Sphinx (>=1.7.3,<1.8.0)", "flake8 (>=3.7.9,<3.8.0)", "pycodestyle (>=2.5.0,<2.6.0)", "pytest (>=3.6.0)", "sphinx-rtd-theme (>=0.2.4,<0.3.0)", "sphinxcontrib-asyncio (>=0.2.0,<0.3.0)", "uvloop (>=0.14.0,<0.15.0)"]
+docs = ["Sphinx (>=1.7.3,<1.8.0)", "sphinx-rtd-theme (>=0.2.4,<0.3.0)", "sphinxcontrib-asyncio (>=0.2.0,<0.3.0)"]
+test = ["flake8 (>=3.7.9,<3.8.0)", "pycodestyle (>=2.5.0,<2.6.0)", "uvloop (>=0.14.0,<0.15.0)"]
 
 [[package]]
 name = "attrs"
@@ -50,7 +42,7 @@ optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [package.extras]
-dev = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "sphinx", "sphinx-rtd-theme", "pre-commit"]
+dev = ["coverage[toml] (>=5.0.2)", "hypothesis", "pre-commit", "pympler", "pytest (>=4.3.0)", "six", "sphinx", "sphinx-rtd-theme", "zope.interface"]
 docs = ["sphinx", "sphinx-rtd-theme", "zope.interface"]
 tests = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface"]
 tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six"]
@@ -180,10 +172,10 @@ pydantic = ">=1.0.0,<2.0.0"
 starlette = "0.13.6"
 
 [package.extras]
-all = ["requests (>=2.24.0,<3.0.0)", "aiofiles (>=0.5.0,<0.6.0)", "jinja2 (>=2.11.2,<3.0.0)", "python-multipart (>=0.0.5,<0.0.6)", "itsdangerous (>=1.1.0,<2.0.0)", "pyyaml (>=5.3.1,<6.0.0)", "graphene (>=2.1.8,<3.0.0)", "ujson (>=3.0.0,<4.0.0)", "orjson (>=3.2.1,<4.0.0)", "email_validator (>=1.1.1,<2.0.0)", "uvicorn[standard] (>=0.12.0,<0.14.0)", "async_exit_stack (>=1.0.1,<2.0.0)", "async_generator (>=1.10,<2.0.0)"]
-dev = ["python-jose[cryptography] (>=3.1.0,<4.0.0)", "passlib[bcrypt] (>=1.7.2,<2.0.0)", "autoflake (>=1.3.1,<2.0.0)", "flake8 (>=3.8.3,<4.0.0)", "uvicorn[standard] (>=0.12.0,<0.14.0)", "graphene (>=2.1.8,<3.0.0)"]
-doc = ["mkdocs (>=1.1.2,<2.0.0)", "mkdocs-material (>=6.1.4,<7.0.0)", "markdown-include (>=0.5.1,<0.6.0)", "mkdocs-markdownextradata-plugin (>=0.1.7,<0.2.0)", "typer-cli (>=0.0.9,<0.0.10)", "pyyaml (>=5.3.1,<6.0.0)"]
-test = ["pytest (==5.4.3)", "pytest-cov (==2.10.0)", "pytest-asyncio (>=0.14.0,<0.15.0)", "mypy (==0.790)", "flake8 (>=3.8.3,<4.0.0)", "black (==20.8b1)", "isort (>=5.0.6,<6.0.0)", "requests (>=2.24.0,<3.0.0)", "httpx (>=0.14.0,<0.15.0)", "email_validator (>=1.1.1,<2.0.0)", "sqlalchemy (>=1.3.18,<2.0.0)", "peewee (>=3.13.3,<4.0.0)", "databases[sqlite] (>=0.3.2,<0.4.0)", "orjson (>=3.2.1,<4.0.0)", "async_exit_stack (>=1.0.1,<2.0.0)", "async_generator (>=1.10,<2.0.0)", "python-multipart (>=0.0.5,<0.0.6)", "aiofiles (>=0.5.0,<0.6.0)", "flask (>=1.1.2,<2.0.0)"]
+all = ["aiofiles (>=0.5.0,<0.6.0)", "async_exit_stack (>=1.0.1,<2.0.0)", "async_generator (>=1.10,<2.0.0)", "email_validator (>=1.1.1,<2.0.0)", "graphene (>=2.1.8,<3.0.0)", "itsdangerous (>=1.1.0,<2.0.0)", "jinja2 (>=2.11.2,<3.0.0)", "orjson (>=3.2.1,<4.0.0)", "python-multipart (>=0.0.5,<0.0.6)", "pyyaml (>=5.3.1,<6.0.0)", "requests (>=2.24.0,<3.0.0)", "ujson (>=3.0.0,<4.0.0)", "uvicorn[standard] (>=0.12.0,<0.14.0)"]
+dev = ["autoflake (>=1.3.1,<2.0.0)", "flake8 (>=3.8.3,<4.0.0)", "graphene (>=2.1.8,<3.0.0)", "passlib[bcrypt] (>=1.7.2,<2.0.0)", "python-jose[cryptography] (>=3.1.0,<4.0.0)", "uvicorn[standard] (>=0.12.0,<0.14.0)"]
+doc = ["markdown-include (>=0.5.1,<0.6.0)", "mkdocs (>=1.1.2,<2.0.0)", "mkdocs-markdownextradata-plugin (>=0.1.7,<0.2.0)", "mkdocs-material (>=6.1.4,<7.0.0)", "pyyaml (>=5.3.1,<6.0.0)", "typer-cli (>=0.0.9,<0.0.10)"]
+test = ["aiofiles (>=0.5.0,<0.6.0)", "async_exit_stack (>=1.0.1,<2.0.0)", "async_generator (>=1.10,<2.0.0)", "black (==20.8b1)", "databases[sqlite] (>=0.3.2,<0.4.0)", "email_validator (>=1.1.1,<2.0.0)", "flake8 (>=3.8.3,<4.0.0)", "flask (>=1.1.2,<2.0.0)", "httpx (>=0.14.0,<0.15.0)", "isort (>=5.0.6,<6.0.0)", "mypy (==0.790)", "orjson (>=3.2.1,<4.0.0)", "peewee (>=3.13.3,<4.0.0)", "pytest (==5.4.3)", "pytest-asyncio (>=0.14.0,<0.15.0)", "pytest-cov (==2.10.0)", "python-multipart (>=0.0.5,<0.0.6)", "requests (>=2.24.0,<3.0.0)", "sqlalchemy (>=1.3.18,<2.0.0)"]
 
 [[package]]
 name = "flake8"
@@ -239,8 +231,8 @@ typing-extensions = {version = ">=3.6.4", markers = "python_version < \"3.8\""}
 zipp = ">=0.5"
 
 [package.extras]
-docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
-testing = ["pytest (>=3.5,!=3.7.3)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pytest-cov", "pytest-enabler", "packaging", "pep517", "pyfakefs", "flufl.flake8", "pytest-black (>=0.3.7)", "pytest-mypy", "importlib-resources (>=1.3)"]
+docs = ["jaraco.packaging (>=8.2)", "rst.linker (>=1.9)", "sphinx"]
+testing = ["flufl.flake8", "importlib-resources (>=1.3)", "packaging", "pep517", "pyfakefs", "pytest (>=3.5,!=3.7.3)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=1.2.3)", "pytest-cov", "pytest-enabler", "pytest-flake8", "pytest-mypy"]
 
 [[package]]
 name = "iniconfig"
@@ -401,25 +393,24 @@ python-versions = "*"
 
 [[package]]
 name = "pytest"
-version = "6.2.2"
+version = "7.1.3"
 description = "pytest: simple powerful testing with Python"
 category = "dev"
 optional = false
-python-versions = ">=3.6"
+python-versions = ">=3.7"
 
 [package.dependencies]
-atomicwrites = {version = ">=1.0", markers = "sys_platform == \"win32\""}
 attrs = ">=19.2.0"
 colorama = {version = "*", markers = "sys_platform == \"win32\""}
 importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
 iniconfig = "*"
 packaging = "*"
-pluggy = ">=0.12,<1.0.0a1"
+pluggy = ">=0.12,<2.0"
 py = ">=1.8.2"
-toml = "*"
+tomli = ">=1.0.0"
 
 [package.extras]
-testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xmlschema"]
+testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "pygments (>=2.7.2)", "requests", "xmlschema"]
 
 [[package]]
 name = "pytest-click"
@@ -446,7 +437,7 @@ coverage = ">=5.2.1"
 pytest = ">=4.6"
 
 [package.extras]
-testing = ["fields", "hunter", "process-tests (==2.0.2)", "six", "pytest-xdist", "virtualenv"]
+testing = ["fields", "hunter", "process-tests (==2.0.2)", "pytest-xdist", "six", "virtualenv"]
 
 [[package]]
 name = "regex"
@@ -471,7 +462,7 @@ idna = ">=2.5,<3"
 urllib3 = ">=1.21.1,<1.27"
 
 [package.extras]
-security = ["pyOpenSSL (>=0.14)", "cryptography (>=1.3.4)"]
+security = ["cryptography (>=1.3.4)", "pyOpenSSL (>=0.14)"]
 socks = ["PySocks (>=1.5.6,!=1.5.7)", "win-inet-pton"]
 
 [[package]]
@@ -508,7 +499,7 @@ postgresql = ["psycopg2"]
 postgresql_pg8000 = ["pg8000 (<1.16.6)"]
 postgresql_psycopg2binary = ["psycopg2-binary"]
 postgresql_psycopg2cffi = ["psycopg2cffi"]
-pymysql = ["pymysql (<1)", "pymysql"]
+pymysql = ["pymysql", "pymysql (<1)"]
 
 [[package]]
 name = "starlette"
@@ -529,6 +520,14 @@ category = "dev"
 optional = false
 python-versions = "*"
 
+[[package]]
+name = "tomli"
+version = "2.0.1"
+description = "A lil' TOML parser"
+category = "dev"
+optional = false
+python-versions = ">=3.7"
+
 [[package]]
 name = "typed-ast"
 version = "1.4.1"
@@ -555,7 +554,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
 
 [package.extras]
 brotli = ["brotlipy (>=0.6.0)"]
-secure = ["certifi", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "pyOpenSSL (>=0.14)", "ipaddress"]
+secure = ["certifi", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "ipaddress", "pyOpenSSL (>=0.14)"]
 socks = ["PySocks (>=1.5.6,!=1.5.7,<2.0)"]
 
 [[package]]
@@ -572,7 +571,7 @@ h11 = ">=0.8"
 typing-extensions = {version = "*", markers = "python_version < \"3.8\""}
 
 [package.extras]
-standard = ["websockets (>=8.0.0,<9.0.0)", "watchgod (>=0.6)", "python-dotenv (>=0.13)", "PyYAML (>=5.1)", "httptools (>=0.1.0,<0.2.0)", "uvloop (>=0.14.0,!=0.15.0,!=0.15.1)", "colorama (>=0.4)"]
+standard = ["PyYAML (>=5.1)", "colorama (>=0.4)", "httptools (>=0.1.0,<0.2.0)", "python-dotenv (>=0.13)", "uvloop (>=0.14.0,!=0.15.0,!=0.15.1)", "watchgod (>=0.6)", "websockets (>=8.0.0,<9.0.0)"]
 
 [[package]]
 name = "zipp"
@@ -583,8 +582,8 @@ optional = false
 python-versions = ">=3.6"
 
 [package.extras]
-docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
-testing = ["pytest (>=3.5,!=3.7.3)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pytest-cov", "jaraco.test (>=3.2.0)", "jaraco.itertools", "func-timeout", "pytest-black (>=0.3.7)", "pytest-mypy"]
+docs = ["jaraco.packaging (>=3.2)", "rst.linker (>=1.9)", "sphinx"]
+testing = ["func-timeout", "jaraco.itertools", "jaraco.test (>=3.2.0)", "pytest (>=3.5,!=3.7.3)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=1.2.3)", "pytest-cov", "pytest-flake8", "pytest-mypy"]
 
 [extras]
 postgresql = ["psycopg2", "asyncpg"]
@@ -593,7 +592,7 @@ sqlite = ["aiosqlite"]
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7"
-content-hash = "bfc111f9cfcf8137c21116a4deec59b237eed283ae89d934d5b704b697bec2f2"
+content-hash = "c98e9aba78e1d5f97ff87af17559807ed664a5805fc0d99e4552dfdfc21a50ee"
 
 [metadata.files]
 aiosqlite = [
@@ -621,10 +620,6 @@ asyncpg = [
     {file = "asyncpg-0.22.0-cp39-cp39-win_amd64.whl", hash = "sha256:2e3875c82ae609b21e562e6befdc35e52c4290e49d03e7529275d59a0595ca97"},
     {file = "asyncpg-0.22.0.tar.gz", hash = "sha256:348ad471d9bdd77f0609a00c860142f47c81c9123f4064d13d65c8569415d802"},
 ]
-atomicwrites = [
-    {file = "atomicwrites-1.4.0-py2.py3-none-any.whl", hash = "sha256:6d1784dea7c0c8d4a5172b6c620f40b6e4cbfdf96d783691f2e1302a7b88e197"},
-    {file = "atomicwrites-1.4.0.tar.gz", hash = "sha256:ae70396ad1a434f9c7046fd2dd196fc04b12f9e91ffb859164193be8b6168a7a"},
-]
 attrs = [
     {file = "attrs-20.2.0-py2.py3-none-any.whl", hash = "sha256:fce7fc47dfc976152e82d53ff92fa0407700c21acd20886a13777a0d20e655dc"},
     {file = "attrs-20.2.0.tar.gz", hash = "sha256:26b54ddbbb9ee1d34d5d3668dd37d6cf74990ab23c828c2888dccdceee395594"},
@@ -819,8 +814,8 @@ pyreadline = [
     {file = "pyreadline-2.1.zip", hash = "sha256:4530592fc2e85b25b1a9f79664433da09237c1a270e4d78ea5aa3a2c7229e2d1"},
 ]
 pytest = [
-    {file = "pytest-6.2.2-py3-none-any.whl", hash = "sha256:b574b57423e818210672e07ca1fa90aaf194a4f63f3ab909a2c67ebb22913839"},
-    {file = "pytest-6.2.2.tar.gz", hash = "sha256:9d1edf9e7d0b84d72ea3dbcdfd22b35fb543a5e8f2a60092dd578936bf63d7f9"},
+    {file = "pytest-7.1.3-py3-none-any.whl", hash = "sha256:1377bda3466d70b55e3f5cecfa55bb7cfcf219c7964629b967c37cf0bda818b7"},
+    {file = "pytest-7.1.3.tar.gz", hash = "sha256:4f365fec2dff9c1162f834d9f18af1ba13062db0c708bf7b946f8a5c76180c39"},
 ]
 pytest-click = [
     {file = "pytest_click-1.0.2-py3-none-any.whl", hash = "sha256:ac298e15a31d8892d9d063c3be82bb9877aaa11a4944e05e541ecc753258e474"},
@@ -919,6 +914,10 @@ toml = [
     {file = "toml-0.10.1-py2.py3-none-any.whl", hash = "sha256:bda89d5935c2eac546d648028b9901107a595863cb36bae0c73ac804a9b4ce88"},
     {file = "toml-0.10.1.tar.gz", hash = "sha256:926b612be1e5ce0634a2ca03470f95169cf16f939018233a670519cb4ac58b0f"},
 ]
+tomli = [
+    {file = "tomli-2.0.1-py3-none-any.whl", hash = "sha256:939de3e7a6161af0c887ef91b7d41a53e7c5a1ca976325f429cb46ea9bc30ecc"},
+    {file = "tomli-2.0.1.tar.gz", hash = "sha256:de526c12914f0c550d15924c62d72abc48d6fe7364aa87328337a31007fe8a4f"},
+]
 typed-ast = [
     {file = "typed_ast-1.4.1-cp35-cp35m-manylinux1_i686.whl", hash = "sha256:73d785a950fc82dd2a25897d525d003f6378d1cb23ab305578394694202a58c3"},
     {file = "typed_ast-1.4.1-cp35-cp35m-manylinux1_x86_64.whl", hash = "sha256:aaee9905aee35ba5905cfb3c62f3e83b3bec7b39413f0a7f19be4e547ea01ebb"},
diff --git a/pyproject.toml b/pyproject.toml
index 0149145..417021a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -34,7 +34,7 @@ flake8 = "^3.9.0"
 black = "^20.8b1"
 pydocstyle = "^6.0.0"
 docutils = "^0.16"
-pytest = "^6.2.2"
+pytest = "^7.1.3"
 pytest-cov = "^2.11.1"
 pytest-click = "^1.0.2"