diff --git a/poetry.lock b/poetry.lock
index 21dfe2e..11aacb4 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -29,9 +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)"]
+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 = "atomicwrites"
@@ -50,10 +50,10 @@ 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"]
+tests-no-zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six"]
 
 [[package]]
 name = "black"
@@ -156,7 +156,7 @@ sqlalchemy = "*"
 [package.extras]
 mysql = ["aiomysql"]
 postgresql = ["asyncpg"]
-postgresql_aiopg = ["aiopg"]
+postgresql-aiopg = ["aiopg"]
 sqlite = ["aiosqlite"]
 
 [[package]]
@@ -180,10 +180,10 @@ 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 +239,8 @@ 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"
@@ -362,18 +362,22 @@ python-versions = ">=3.6"
 [package.extras]
 dotenv = ["python-dotenv (>=0.10.4)"]
 email = ["email-validator (>=1.0.3)"]
-typing_extensions = ["typing-extensions (>=3.7.2)"]
+typing-extensions = ["typing-extensions (>=3.7.2)"]
 
 [[package]]
 name = "pydocstyle"
-version = "6.0.0"
+version = "6.2.1"
 description = "Python docstring style checker"
 category = "dev"
 optional = false
 python-versions = ">=3.6"
 
 [package.dependencies]
-snowballstemmer = "*"
+importlib-metadata = {version = ">=2.0.0,<5.0.0", markers = "python_version < \"3.8\""}
+snowballstemmer = ">=2.2.0"
+
+[package.extras]
+toml = ["tomli (>=1.2.3)"]
 
 [[package]]
 name = "pyflakes"
@@ -446,7 +450,7 @@ 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 +475,7 @@ 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]]
@@ -484,8 +488,8 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
 
 [[package]]
 name = "snowballstemmer"
-version = "2.0.0"
-description = "This package provides 26 stemmers for 25 languages generated from Snowball algorithms."
+version = "2.2.0"
+description = "This package provides 29 stemmers for 28 languages generated from Snowball algorithms."
 category = "dev"
 optional = false
 python-versions = "*"
@@ -500,15 +504,15 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [package.extras]
 mssql = ["pyodbc"]
-mssql_pymssql = ["pymssql"]
-mssql_pyodbc = ["pyodbc"]
+mssql-pymssql = ["pymssql"]
+mssql-pyodbc = ["pyodbc"]
 mysql = ["mysqlclient"]
-oracle = ["cx-oracle"]
+oracle = ["cx_oracle"]
 postgresql = ["psycopg2"]
-postgresql_pg8000 = ["pg8000 (<1.16.6)"]
-postgresql_psycopg2binary = ["psycopg2-binary"]
-postgresql_psycopg2cffi = ["psycopg2cffi"]
-pymysql = ["pymysql (<1)", "pymysql"]
+postgresql-pg8000 = ["pg8000 (<1.16.6)"]
+postgresql-psycopg2binary = ["psycopg2-binary"]
+postgresql-psycopg2cffi = ["psycopg2cffi"]
+pymysql = ["pymysql", "pymysql (<1)"]
 
 [[package]]
 name = "starlette"
@@ -555,7 +559,7 @@ 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 +576,7 @@ 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 +587,8 @@ 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 +597,7 @@ sqlite = ["aiosqlite"]
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7"
-content-hash = "bfc111f9cfcf8137c21116a4deec59b237eed283ae89d934d5b704b697bec2f2"
+content-hash = "88761ea426d6b08fc8e467574a15bf2b5c34271a6c85f58aaf9d224e090ff7cf"
 
 [metadata.files]
 aiosqlite = [
@@ -802,8 +806,8 @@ pydantic = [
     {file = "pydantic-1.6.1.tar.gz", hash = "sha256:54122a8ed6b75fe1dd80797f8251ad2063ea348a03b77218d73ea9fe19bd4e73"},
 ]
 pydocstyle = [
-    {file = "pydocstyle-6.0.0-py3-none-any.whl", hash = "sha256:d4449cf16d7e6709f63192146706933c7a334af7c0f083904799ccb851c50f6d"},
-    {file = "pydocstyle-6.0.0.tar.gz", hash = "sha256:164befb520d851dbcf0e029681b91f4f599c62c5cd8933fd54b1bfbd50e89e1f"},
+    {file = "pydocstyle-6.2.1-py3-none-any.whl", hash = "sha256:e034023706489a5786778d21bd25e951052616b260d83e163f09d559dcd647b9"},
+    {file = "pydocstyle-6.2.1.tar.gz", hash = "sha256:5ddccabe3c9555d4afaabdba909ca2de4fa24ac31e2eede4ab3d528a4bcadd52"},
 ]
 pyflakes = [
     {file = "pyflakes-2.3.0-py2.py3-none-any.whl", hash = "sha256:910208209dcea632721cb58363d0f72913d9e8cf64dc6f8ae2e02a3609aba40d"},
@@ -814,8 +818,6 @@ pyparsing = [
     {file = "pyparsing-2.4.7.tar.gz", hash = "sha256:c203ec8783bf771a155b207279b9bccb8dea02d8f0c9e5f8ead507bc3246ecc1"},
 ]
 pyreadline = [
-    {file = "pyreadline-2.1.win-amd64.exe", hash = "sha256:9ce5fa65b8992dfa373bddc5b6e0864ead8f291c94fbfec05fbd5c836162e67b"},
-    {file = "pyreadline-2.1.win32.exe", hash = "sha256:65540c21bfe14405a3a77e4c085ecfce88724743a4ead47c66b84defcf82c32e"},
     {file = "pyreadline-2.1.zip", hash = "sha256:4530592fc2e85b25b1a9f79664433da09237c1a270e4d78ea5aa3a2c7229e2d1"},
 ]
 pytest = [
@@ -868,8 +870,8 @@ six = [
     {file = "six-1.15.0.tar.gz", hash = "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259"},
 ]
 snowballstemmer = [
-    {file = "snowballstemmer-2.0.0-py2.py3-none-any.whl", hash = "sha256:209f257d7533fdb3cb73bdbd24f436239ca3b2fa67d56f6ff88e86be08cc5ef0"},
-    {file = "snowballstemmer-2.0.0.tar.gz", hash = "sha256:df3bac3df4c2c01363f3dd2cfa78cce2840a79b9f1c2d2de9ce8d31683992f52"},
+    {file = "snowballstemmer-2.2.0-py2.py3-none-any.whl", hash = "sha256:c8e1716e83cc398ae16824e5572ae04e0d9fc2c6b985fb0f900f5f0c96ecba1a"},
+    {file = "snowballstemmer-2.2.0.tar.gz", hash = "sha256:09b16deb8547d3412ad7b590689584cd0fe25ec8db3be37788be3810cbf19cb1"},
 ]
 sqlalchemy = [
     {file = "SQLAlchemy-1.3.23-cp27-cp27m-macosx_10_14_x86_64.whl", hash = "sha256:fd3b96f8c705af8e938eaa99cbd8fd1450f632d38cad55e7367c33b263bf98ec"},
diff --git a/pyproject.toml b/pyproject.toml
index 0149145..25d6f14 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ aiosqlite = { version = "^0.17.0", optional = true }
 [tool.poetry.dev-dependencies]
 flake8 = "^3.9.0"
 black = "^20.8b1"
-pydocstyle = "^6.0.0"
+pydocstyle = "^6.2.1"
 docutils = "^0.16"
 pytest = "^6.2.2"
 pytest-cov = "^2.11.1"