diff --git a/.verchew.ini b/.verchew.ini
index 6fc78f85..2c8c307f 100644
--- a/.verchew.ini
+++ b/.verchew.ini
@@ -6,7 +6,7 @@ version = GNU Make
 [Python]
 
 cli = python
-version = 3.7 || 3.8 || 3.9 || 3.10
+version = 3.8 || 3.9 || 3.10
 
 [Poetry]
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5eb544ef..8233ce48 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,9 +1,14 @@
 # Release Notes
 
+## 2.0 (alpha)
+
+- Dropped support for Python 3.7.
+
 ## 1.4.2 (2022-07-29)
 
 - Fixed exception when `Union[int, float]` or `Union[str, ...]` is used.
 
+
 ## 1.4.1 (2022-07-28)
 
 - Fixed exception when `TypedDict` is used, but schema is not yet supported.
diff --git a/README.md b/README.md
index 18c92111..2f940286 100644
--- a/README.md
+++ b/README.md
@@ -101,7 +101,7 @@ Objects can also be restored from the filesystem:
 
 ## Installation
 
-Because datafiles relies on dataclasses and type annotations, Python 3.7+ is required. Install this library directly into an activated virtual environment:
+Install this library directly into an activated virtual environment:
 
 ```
 $ pip install datafiles
diff --git a/datafiles/tests/test_converters.py b/datafiles/tests/test_converters.py
index 5514015b..2aa91cbd 100644
--- a/datafiles/tests/test_converters.py
+++ b/datafiles/tests/test_converters.py
@@ -2,11 +2,10 @@
 
 from dataclasses import dataclass
 from enum import Enum
-from typing import ByteString, Dict, List, Mapping, Optional, Set, Union
+from typing import ByteString, Dict, List, Mapping, Optional, Set, TypedDict, Union
 
 import pytest
 from ruamel.yaml.scalarstring import LiteralScalarString
-from typing_extensions import TypedDict
 
 from datafiles import converters, settings
 
diff --git a/docs/requirements.txt b/docs/requirements.txt
index e7edadd9..78d4e25d 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,5 @@
 jinja2==3.0.3; python_version >= "3.6"
-markdown==3.3.4; python_version >= "3.6"
+markdown==3.3.7; python_version >= "3.6"
 mkdocs==1.3.1; python_version >= "3.6"
-pygments==2.10.0; python_version >= "3.5"
+jupyterlab-pygments==0.2.2; python_version >= "3.7"
+pygments==2.12.0; python_version >= "3.6"
diff --git a/poetry.lock b/poetry.lock
index a45338ee..ce5b79fc 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -11,7 +11,7 @@ textwrap3 = ">=0.9.2"
 
 [[package]]
 name = "appnope"
-version = "0.1.2"
+version = "0.1.3"
 description = "Disable App Nap on macOS >= 10.9"
 category = "dev"
 optional = false
@@ -19,45 +19,50 @@ python-versions = "*"
 
 [[package]]
 name = "argon2-cffi"
-version = "20.1.0"
+version = "21.3.0"
 description = "The secure Argon2 password hashing algorithm."
 category = "dev"
 optional = false
-python-versions = "*"
+python-versions = ">=3.6"
 
 [package.dependencies]
-cffi = ">=1.0.0"
-six = "*"
+argon2-cffi-bindings = "*"
 
 [package.extras]
-dev = ["coverage[toml] (>=5.0.2)", "hypothesis", "pytest", "sphinx", "wheel", "pre-commit"]
-docs = ["sphinx"]
+dev = ["pre-commit", "cogapp", "tomli", "coverage[toml] (>=5.0.2)", "hypothesis", "pytest", "sphinx", "sphinx-notfound-page", "furo"]
+docs = ["sphinx", "sphinx-notfound-page", "furo"]
 tests = ["coverage[toml] (>=5.0.2)", "hypothesis", "pytest"]
 
 [[package]]
-name = "astroid"
-version = "2.5.3"
-description = "An abstract syntax tree for Python with inference support."
+name = "argon2-cffi-bindings"
+version = "21.2.0"
+description = "Low-level CFFI bindings for Argon2"
 category = "dev"
 optional = false
 python-versions = ">=3.6"
 
 [package.dependencies]
-lazy-object-proxy = ">=1.4.0"
-typed-ast = {version = ">=1.4.0,<1.5", markers = "implementation_name == \"cpython\" and python_version < \"3.8\""}
-wrapt = ">=1.11,<1.13"
+cffi = ">=1.0.1"
+
+[package.extras]
+dev = ["pytest", "cogapp", "pre-commit", "wheel"]
+tests = ["pytest"]
 
 [[package]]
-name = "async-generator"
-version = "1.10"
-description = "Async generators and context managers for Python 3.5+"
+name = "astroid"
+version = "2.6.6"
+description = "An abstract syntax tree for Python with inference support."
 category = "dev"
 optional = false
-python-versions = ">=3.5"
+python-versions = "~=3.6"
+
+[package.dependencies]
+lazy-object-proxy = ">=1.4.0"
+wrapt = ">=1.11,<1.13"
 
 [[package]]
 name = "atomicwrites"
-version = "1.4.0"
+version = "1.4.1"
 description = "Atomic file writes."
 category = "dev"
 optional = false
@@ -65,17 +70,17 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [[package]]
 name = "attrs"
-version = "20.3.0"
+version = "22.1.0"
 description = "Classes Without Boilerplate"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+python-versions = ">=3.5"
 
 [package.extras]
-dev = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "furo", "sphinx", "pre-commit"]
-docs = ["furo", "sphinx", "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"]
+dev = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "mypy (>=0.900,!=0.940)", "pytest-mypy-plugins", "zope.interface", "furo", "sphinx", "sphinx-notfound-page", "pre-commit", "cloudpickle"]
+docs = ["furo", "sphinx", "zope.interface", "sphinx-notfound-page"]
+tests = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "mypy (>=0.900,!=0.940)", "pytest-mypy-plugins", "zope.interface", "cloudpickle"]
+tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "mypy (>=0.900,!=0.940)", "pytest-mypy-plugins", "cloudpickle"]
 
 [[package]]
 name = "backcall"
@@ -85,9 +90,24 @@ category = "dev"
 optional = false
 python-versions = "*"
 
+[[package]]
+name = "beautifulsoup4"
+version = "4.11.1"
+description = "Screen-scraping library"
+category = "dev"
+optional = false
+python-versions = ">=3.6.0"
+
+[package.dependencies]
+soupsieve = ">1.2"
+
+[package.extras]
+html5lib = ["html5lib"]
+lxml = ["lxml"]
+
 [[package]]
 name = "black"
-version = "22.1.0"
+version = "22.6.0"
 description = "The uncompromising code formatter."
 category = "dev"
 optional = false
@@ -98,8 +118,7 @@ click = ">=8.0.0"
 mypy-extensions = ">=0.4.3"
 pathspec = ">=0.9.0"
 platformdirs = ">=2"
-tomli = ">=1.1.0"
-typed-ast = {version = ">=1.4.2", markers = "python_version < \"3.8\" and implementation_name == \"cpython\""}
+tomli = {version = ">=1.1.0", markers = "python_full_version < \"3.11.0a7\""}
 typing-extensions = {version = ">=3.10.0.0", markers = "python_version < \"3.10\""}
 
 [package.extras]
@@ -110,17 +129,20 @@ uvloop = ["uvloop (>=0.15.2)"]
 
 [[package]]
 name = "bleach"
-version = "3.3.0"
+version = "5.0.1"
 description = "An easy safelist-based HTML-sanitizing tool."
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+python-versions = ">=3.7"
 
 [package.dependencies]
-packaging = "*"
 six = ">=1.9.0"
 webencodings = "*"
 
+[package.extras]
+css = ["tinycss2 (>=1.1.0,<1.2)"]
+dev = ["build (==0.8.0)", "flake8 (==4.0.1)", "hashin (==0.17.0)", "pip-tools (==6.6.2)", "pytest (==7.1.2)", "Sphinx (==4.3.2)", "tox (==3.25.0)", "twine (==4.0.1)", "wheel (==0.37.1)", "black (==22.3.0)", "mypy (==0.961)"]
+
 [[package]]
 name = "cached-property"
 version = "1.5.2"
@@ -131,15 +153,15 @@ python-versions = "*"
 
 [[package]]
 name = "certifi"
-version = "2020.12.5"
+version = "2022.6.15"
 description = "Python package for providing Mozilla's CA Bundle."
 category = "dev"
 optional = false
-python-versions = "*"
+python-versions = ">=3.6"
 
 [[package]]
 name = "cffi"
-version = "1.14.5"
+version = "1.15.1"
 description = "Foreign Function Interface for Python calling C code."
 category = "dev"
 optional = false
@@ -150,11 +172,11 @@ pycparser = "*"
 
 [[package]]
 name = "charset-normalizer"
-version = "2.0.7"
+version = "2.1.0"
 description = "The Real First Universal Charset Detector. Open, modern and actively maintained alternative to Chardet."
 category = "dev"
 optional = false
-python-versions = ">=3.5.0"
+python-versions = ">=3.6.0"
 
 [package.extras]
 unicode_backport = ["unicodedata2"]
@@ -169,19 +191,18 @@ python-versions = "*"
 
 [[package]]
 name = "click"
-version = "8.0.3"
+version = "8.1.3"
 description = "Composable command line interface toolkit"
 category = "dev"
 optional = false
-python-versions = ">=3.6"
+python-versions = ">=3.7"
 
 [package.dependencies]
 colorama = {version = "*", markers = "platform_system == \"Windows\""}
-importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
 
 [[package]]
 name = "colorama"
-version = "0.4.4"
+version = "0.4.5"
 description = "Cross-platform colored terminal text."
 category = "dev"
 optional = false
@@ -189,18 +210,18 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [[package]]
 name = "coverage"
-version = "5.5"
+version = "6.4.2"
 description = "Code coverage measurement for Python"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
+python-versions = ">=3.7"
 
 [package.extras]
-toml = ["toml"]
+toml = ["tomli"]
 
 [[package]]
 name = "coveragespace"
-version = "4.1"
+version = "4.2"
 description = "A place to track your code coverage metrics."
 category = "dev"
 optional = false
@@ -213,9 +234,17 @@ docopt = ">=0.6"
 minilog = ">=2.0,<3.0"
 requests = ">=2.0,<3.0"
 
+[[package]]
+name = "debugpy"
+version = "1.6.2"
+description = "An implementation of the Debug Adapter Protocol for Python"
+category = "dev"
+optional = false
+python-versions = ">=3.7"
+
 [[package]]
 name = "decorator"
-version = "5.0.7"
+version = "5.1.1"
 description = "Decorators for Humans"
 category = "dev"
 optional = false
@@ -239,15 +268,26 @@ python-versions = "*"
 
 [[package]]
 name = "entrypoints"
-version = "0.3"
+version = "0.4"
 description = "Discover and load entry points from installed packages."
 category = "dev"
 optional = false
-python-versions = ">=2.7"
+python-versions = ">=3.6"
+
+[[package]]
+name = "fastjsonschema"
+version = "2.16.1"
+description = "Fastest Python implementation of JSON schema"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.extras]
+devel = ["colorama", "jsonschema", "json-spec", "pylint", "pytest", "pytest-benchmark", "pytest-cache", "validictory"]
 
 [[package]]
 name = "ghp-import"
-version = "2.0.2"
+version = "2.1.0"
 description = "Copy your docs directly to the gh-pages branch."
 category = "dev"
 optional = false
@@ -257,15 +297,15 @@ python-versions = "*"
 python-dateutil = ">=2.8.1"
 
 [package.extras]
-dev = ["twine", "markdown", "flake8", "wheel"]
+dev = ["wheel", "flake8", "markdown", "twine"]
 
 [[package]]
 name = "gprof2dot"
-version = "2021.2.21"
+version = "2022.7.29"
 description = "Generate a dot graph from the output of several profilers."
 category = "dev"
 optional = false
-python-versions = "*"
+python-versions = ">=2.7"
 
 [[package]]
 name = "idna"
@@ -284,7 +324,6 @@ optional = false
 python-versions = ">=3.7"
 
 [package.dependencies]
-typing-extensions = {version = ">=3.6.4", markers = "python_version < \"3.8\""}
 zipp = ">=0.5"
 
 [package.extras]
@@ -292,6 +331,21 @@ docs = ["sphinx", "jaraco.packaging (>=9)", "rst.linker (>=1.9)"]
 perf = ["ipython"]
 testing = ["pytest (>=6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.3)", "packaging", "pyfakefs", "flufl.flake8", "pytest-perf (>=0.9.2)", "pytest-black (>=0.3.7)", "pytest-mypy (>=0.9.1)", "importlib-resources (>=1.3)"]
 
+[[package]]
+name = "importlib-resources"
+version = "5.9.0"
+description = "Read resources from Python packages"
+category = "dev"
+optional = false
+python-versions = ">=3.7"
+
+[package.dependencies]
+zipp = {version = ">=3.1.0", markers = "python_version < \"3.10\""}
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=9)", "rst.linker (>=1.9)", "jaraco.tidelift (>=1.4)"]
+testing = ["pytest (>=6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.3)", "pytest-black (>=0.3.7)", "pytest-mypy (>=0.9.1)"]
+
 [[package]]
 name = "iniconfig"
 version = "1.1.1"
@@ -302,25 +356,31 @@ python-versions = "*"
 
 [[package]]
 name = "ipykernel"
-version = "5.5.3"
+version = "6.15.1"
 description = "IPython Kernel for Jupyter"
 category = "dev"
 optional = false
-python-versions = ">=3.5"
+python-versions = ">=3.7"
 
 [package.dependencies]
 appnope = {version = "*", markers = "platform_system == \"Darwin\""}
-ipython = ">=5.0.0"
-jupyter-client = "*"
-tornado = ">=4.2"
-traitlets = ">=4.1.0"
+debugpy = ">=1.0"
+ipython = ">=7.23.1"
+jupyter-client = ">=6.1.12"
+matplotlib-inline = ">=0.1"
+nest-asyncio = "*"
+packaging = "*"
+psutil = "*"
+pyzmq = ">=17"
+tornado = ">=6.1"
+traitlets = ">=5.1.0"
 
 [package.extras]
-test = ["pytest (!=5.3.4)", "pytest-cov", "flaky", "nose", "jedi (<=0.17.2)"]
+test = ["flaky", "ipyparallel", "pre-commit", "pytest-cov", "pytest-timeout", "pytest (>=6.0)"]
 
 [[package]]
 name = "ipython"
-version = "7.31.1"
+version = "7.34.0"
 description = "IPython: Productive Interactive Computing"
 category = "dev"
 optional = false
@@ -360,7 +420,7 @@ python-versions = "*"
 
 [[package]]
 name = "ipywidgets"
-version = "7.6.3"
+version = "7.7.1"
 description = "IPython HTML widgets for Jupyter"
 category = "dev"
 optional = false
@@ -369,10 +429,10 @@ python-versions = "*"
 [package.dependencies]
 ipykernel = ">=4.5.1"
 ipython = {version = ">=4.0.0", markers = "python_version >= \"3.3\""}
+ipython-genutils = ">=0.2.0,<0.3.0"
 jupyterlab-widgets = {version = ">=1.0.0", markers = "python_version >= \"3.6\""}
-nbformat = ">=4.2.0"
 traitlets = ">=4.3.1"
-widgetsnbextension = ">=3.5.0,<3.6.0"
+widgetsnbextension = ">=3.6.0,<3.7.0"
 
 [package.extras]
 test = ["pytest (>=3.6.0)", "pytest-cov", "mock"]
@@ -393,7 +453,7 @@ plugins = ["setuptools"]
 
 [[package]]
 name = "jedi"
-version = "0.18.0"
+version = "0.18.1"
 description = "An autocompletion tool for Python that can be used for text editors."
 category = "dev"
 optional = false
@@ -404,7 +464,7 @@ parso = ">=0.8.0,<0.9.0"
 
 [package.extras]
 qa = ["flake8 (==3.8.3)", "mypy (==0.782)"]
-testing = ["Django (<3.1)", "colorama", "docopt", "pytest (<6.0.0)"]
+testing = ["Django (<3.1)", "colorama", "docopt", "pytest (<7.0.0)"]
 
 [[package]]
 name = "jinja2"
@@ -422,21 +482,21 @@ i18n = ["Babel (>=2.7)"]
 
 [[package]]
 name = "jsonschema"
-version = "3.2.0"
+version = "4.9.1"
 description = "An implementation of JSON Schema validation for Python"
 category = "dev"
 optional = false
-python-versions = "*"
+python-versions = ">=3.7"
 
 [package.dependencies]
 attrs = ">=17.4.0"
-importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
-pyrsistent = ">=0.14.0"
-six = ">=1.11.0"
+importlib-resources = {version = ">=1.4.0", markers = "python_version < \"3.9\""}
+pkgutil-resolve-name = {version = ">=1.3.10", markers = "python_version < \"3.9\""}
+pyrsistent = ">=0.14.0,<0.17.0 || >0.17.0,<0.17.1 || >0.17.1,<0.17.2 || >0.17.2"
 
 [package.extras]
-format = ["idna", "jsonpointer (>1.13)", "rfc3987", "strict-rfc3339", "webcolors"]
-format_nongpl = ["idna", "jsonpointer (>1.13)", "webcolors", "rfc3986-validator (>0.1.0)", "rfc3339-validator"]
+format = ["fqdn", "idna", "isoduration", "jsonpointer (>1.13)", "rfc3339-validator", "rfc3987", "uri-template", "webcolors (>=1.11)"]
+format-nongpl = ["fqdn", "idna", "isoduration", "jsonpointer (>1.13)", "rfc3339-validator", "rfc3986-validator (>0.1.0)", "uri-template", "webcolors (>=1.11)"]
 
 [[package]]
 name = "jupyter"
@@ -456,36 +516,37 @@ qtconsole = "*"
 
 [[package]]
 name = "jupyter-client"
-version = "6.2.0"
+version = "7.3.4"
 description = "Jupyter protocol implementation and client libraries"
 category = "dev"
 optional = false
-python-versions = ">=3.6.1"
+python-versions = ">=3.7"
 
 [package.dependencies]
-jupyter-core = ">=4.6.0"
-nest-asyncio = ">=1.5"
-python-dateutil = ">=2.1"
-pyzmq = ">=13"
-tornado = ">=4.1"
+entrypoints = "*"
+jupyter-core = ">=4.9.2"
+nest-asyncio = ">=1.5.4"
+python-dateutil = ">=2.8.2"
+pyzmq = ">=23.0"
+tornado = ">=6.0"
 traitlets = "*"
 
 [package.extras]
-doc = ["sphinx (>=1.3.6)", "sphinx-rtd-theme", "sphinxcontrib-github-alt"]
-test = ["async-generator", "ipykernel", "ipython", "mock", "pytest-asyncio", "pytest-timeout", "pytest", "mypy", "pre-commit", "jedi (<0.18)"]
+doc = ["ipykernel", "myst-parser", "sphinx-rtd-theme", "sphinx (>=1.3.6)", "sphinxcontrib-github-alt"]
+test = ["codecov", "coverage", "ipykernel (>=6.5)", "ipython", "mypy", "pre-commit", "pytest", "pytest-asyncio (>=0.18)", "pytest-cov", "pytest-timeout"]
 
 [[package]]
 name = "jupyter-console"
-version = "6.4.0"
+version = "6.4.4"
 description = "Jupyter terminal console"
 category = "dev"
 optional = false
-python-versions = ">=3.6"
+python-versions = ">=3.7"
 
 [package.dependencies]
 ipykernel = "*"
 ipython = "*"
-jupyter-client = "*"
+jupyter-client = ">=7.0.0"
 prompt-toolkit = ">=2.0.0,<3.0.0 || >3.0.0,<3.0.1 || >3.0.1,<3.1.0"
 pygments = "*"
 
@@ -494,19 +555,30 @@ test = ["pexpect"]
 
 [[package]]
 name = "jupyter-core"
-version = "4.7.1"
+version = "4.11.1"
 description = "Jupyter core package. A base package on which Jupyter projects rely."
 category = "dev"
 optional = false
-python-versions = ">=3.6"
+python-versions = ">=3.7"
 
 [package.dependencies]
-pywin32 = {version = ">=1.0", markers = "sys_platform == \"win32\""}
+pywin32 = {version = ">=1.0", markers = "sys_platform == \"win32\" and platform_python_implementation != \"PyPy\""}
 traitlets = "*"
 
+[package.extras]
+test = ["ipykernel", "pre-commit", "pytest", "pytest-cov", "pytest-timeout"]
+
+[[package]]
+name = "jupyterlab-pygments"
+version = "0.2.2"
+description = "Pygments theme using JupyterLab CSS variables"
+category = "dev"
+optional = false
+python-versions = ">=3.7"
+
 [[package]]
 name = "jupyterlab-widgets"
-version = "1.0.0"
+version = "1.1.1"
 description = "A JupyterLab extension."
 category = "dev"
 optional = false
@@ -514,22 +586,22 @@ python-versions = ">=3.6"
 
 [[package]]
 name = "lazy-object-proxy"
-version = "1.6.0"
+version = "1.7.1"
 description = "A fast and thorough lazy object proxy."
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*"
+python-versions = ">=3.6"
 
 [[package]]
 name = "markdown"
-version = "3.3.4"
+version = "3.3.7"
 description = "Python implementation of Markdown."
 category = "dev"
 optional = false
 python-versions = ">=3.6"
 
 [package.dependencies]
-importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
+importlib-metadata = {version = ">=4.4", markers = "python_version < \"3.10\""}
 
 [package.extras]
 testing = ["coverage", "pyyaml"]
@@ -579,8 +651,8 @@ python-versions = ">=3.7,<4.0"
 
 [[package]]
 name = "mistune"
-version = "2.0.3"
-description = "A sane Markdown parser with useful plugins and renderers"
+version = "0.8.4"
+description = "The fastest markdown parser in pure Python"
 category = "dev"
 optional = false
 python-versions = "*"
@@ -619,7 +691,6 @@ python-versions = ">=3.5"
 [package.dependencies]
 mypy-extensions = ">=0.4.3,<0.5.0"
 toml = "*"
-typed-ast = {version = ">=1.4.0,<1.5.0", markers = "python_version < \"3.8\""}
 typing-extensions = ">=3.7.4"
 
 [package.extras]
@@ -636,69 +707,71 @@ python-versions = "*"
 
 [[package]]
 name = "nbclient"
-version = "0.5.3"
+version = "0.6.6"
 description = "A client library for executing notebooks. Formerly nbconvert's ExecutePreprocessor."
 category = "dev"
 optional = false
-python-versions = ">=3.6.1"
+python-versions = ">=3.7.0"
 
 [package.dependencies]
-async-generator = "*"
 jupyter-client = ">=6.1.5"
 nbformat = ">=5.0"
 nest-asyncio = "*"
-traitlets = ">=4.2"
+traitlets = ">=5.2.2"
 
 [package.extras]
-test = ["black", "twine (>=1.11.0)", "setuptools (>=38.6.0)", "wheel (>=0.31.0)", "pip (>=18.1)", "xmltodict", "bumpversion", "tox", "mypy", "flake8", "check-manifest", "pytest-cov (>=2.6.1)", "pytest (>=4.1)", "ipywidgets", "ipykernel", "ipython", "coverage", "codecov"]
-sphinx = ["myst-parser", "moto", "mock", "sphinx-book-theme", "Sphinx (>=1.7)"]
-dev = ["black", "twine (>=1.11.0)", "setuptools (>=38.6.0)", "wheel (>=0.31.0)", "pip (>=18.1)", "xmltodict", "bumpversion", "tox", "mypy", "flake8", "check-manifest", "pytest-cov (>=2.6.1)", "pytest (>=4.1)", "ipywidgets", "ipykernel", "ipython", "coverage", "codecov"]
+sphinx = ["autodoc-traits", "mock", "moto", "myst-parser", "Sphinx (>=1.7)", "sphinx-book-theme"]
+test = ["black", "check-manifest", "flake8", "ipykernel", "ipython (<8.0.0)", "ipywidgets (<8.0.0)", "mypy", "pip (>=18.1)", "pre-commit", "pytest (>=4.1)", "pytest-asyncio", "pytest-cov (>=2.6.1)", "setuptools (>=60.0)", "testpath", "twine (>=1.11.0)", "xmltodict"]
 
 [[package]]
 name = "nbconvert"
-version = "5.5.0"
+version = "6.5.0"
 description = "Converting Jupyter Notebooks"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+python-versions = ">=3.7"
 
 [package.dependencies]
+beautifulsoup4 = "*"
 bleach = "*"
 defusedxml = "*"
 entrypoints = ">=0.2.2"
-jinja2 = ">=2.4"
-jupyter-core = "*"
-mistune = ">=0.8.1"
-nbformat = ">=4.4"
+jinja2 = ">=3.0"
+jupyter-core = ">=4.7"
+jupyterlab-pygments = "*"
+MarkupSafe = ">=2.0"
+mistune = ">=0.8.1,<2"
+nbclient = ">=0.5.0"
+nbformat = ">=5.1"
+packaging = "*"
 pandocfilters = ">=1.4.1"
-pygments = "*"
-testpath = "*"
-traitlets = ">=4.2"
+pygments = ">=2.4.1"
+tinycss2 = "*"
+traitlets = ">=5.0"
 
 [package.extras]
-all = ["pytest", "pytest-cov", "ipykernel", "jupyter-client (>=4.2)", "ipywidgets (>=7)", "tornado (>=4.0)", "sphinx (>=1.5.1)", "sphinx-rtd-theme", "nbsphinx (>=0.2.12)", "sphinxcontrib-github-alt", "ipython"]
-docs = ["sphinx (>=1.5.1)", "sphinx-rtd-theme", "nbsphinx (>=0.2.12)", "sphinxcontrib-github-alt", "ipython", "jupyter-client (>=4.2)"]
-execute = ["jupyter-client (>=4.2)"]
-serve = ["tornado (>=4.0)"]
-test = ["pytest", "pytest-cov", "ipykernel", "jupyter-client (>=4.2)", "ipywidgets (>=7)"]
+all = ["pytest", "pytest-cov", "pytest-dependency", "ipykernel", "ipywidgets (>=7)", "pre-commit", "pyppeteer (>=1,<1.1)", "tornado (>=6.1)", "sphinx (>=1.5.1)", "sphinx-rtd-theme", "nbsphinx (>=0.2.12)", "ipython"]
+docs = ["sphinx (>=1.5.1)", "sphinx-rtd-theme", "nbsphinx (>=0.2.12)", "ipython"]
+serve = ["tornado (>=6.1)"]
+test = ["pytest", "pytest-cov", "pytest-dependency", "ipykernel", "ipywidgets (>=7)", "pre-commit", "pyppeteer (>=1,<1.1)"]
+webpdf = ["pyppeteer (>=1,<1.1)"]
 
 [[package]]
 name = "nbformat"
-version = "5.1.3"
+version = "5.4.0"
 description = "The Jupyter Notebook format"
 category = "dev"
 optional = false
-python-versions = ">=3.5"
+python-versions = ">=3.7"
 
 [package.dependencies]
-ipython-genutils = "*"
-jsonschema = ">=2.4,<2.5.0 || >2.5.0"
+fastjsonschema = "*"
+jsonschema = ">=2.6"
 jupyter-core = "*"
-traitlets = ">=4.1"
+traitlets = ">=5.1"
 
 [package.extras]
-fast = ["fastjsonschema"]
-test = ["check-manifest", "fastjsonschema", "testpath", "pytest", "pytest-cov"]
+test = ["check-manifest", "testpath", "pytest", "pre-commit"]
 
 [[package]]
 name = "nbstripout"
@@ -713,7 +786,7 @@ nbformat = "*"
 
 [[package]]
 name = "nest-asyncio"
-version = "1.5.1"
+version = "1.5.5"
 description = "Patch asyncio to allow nested event loops"
 category = "dev"
 optional = false
@@ -751,18 +824,18 @@ test = ["pytest", "coverage", "requests", "testpath", "nbval", "selenium", "pyte
 
 [[package]]
 name = "packaging"
-version = "20.9"
+version = "21.3"
 description = "Core utilities for Python packages"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+python-versions = ">=3.6"
 
 [package.dependencies]
-pyparsing = ">=2.0.2"
+pyparsing = ">=2.0.2,<3.0.5 || >3.0.5"
 
 [[package]]
 name = "pandocfilters"
-version = "1.4.3"
+version = "1.5.0"
 description = "Utilities for writing pandoc filters in python"
 category = "dev"
 optional = false
@@ -770,7 +843,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [[package]]
 name = "papermill"
-version = "2.3.3"
+version = "2.3.4"
 description = "Parametrize and run Jupyter and nteract Notebooks"
 category = "dev"
 optional = false
@@ -778,7 +851,6 @@ python-versions = ">=3.6"
 
 [package.dependencies]
 ansiwrap = "*"
-black = "*"
 click = "*"
 entrypoints = "*"
 nbclient = ">=0.2.0"
@@ -789,13 +861,15 @@ tenacity = "*"
 tqdm = ">=4.32.2"
 
 [package.extras]
-all = ["boto3", "azure-datalake-store (>=0.0.30)", "azure-storage-blob (>=12.1.0)", "requests (>=2.21.0)", "gcsfs (>=0.2.0)", "pyarrow"]
+all = ["boto3", "azure-datalake-store (>=0.0.30)", "azure-storage-blob (>=12.1.0)", "requests (>=2.21.0)", "gcsfs (>=0.2.0)", "pyarrow", "black (>=19.3b0)"]
 azure = ["azure-datalake-store (>=0.0.30)", "azure-storage-blob (>=12.1.0)", "requests (>=2.21.0)"]
-dev = ["boto3", "botocore", "codecov", "coverage", "google-compute-engine", "ipython (>=5.0)", "ipywidgets", "notebook", "mock", "moto", "pytest (>=4.1)", "pytest-cov (>=2.6.1)", "pytest-mock (>=1.10)", "pytest-env (>=0.6.2)", "requests (>=2.21.0)", "check-manifest", "attrs (>=17.4.0)", "pre-commit", "flake8", "tox", "bumpversion", "recommonmark", "pip (>=18.1)", "wheel (>=0.31.0)", "setuptools (>=38.6.0)", "twine (>=1.11.0)", "azure-datalake-store (>=0.0.30)", "azure-storage-blob (>=12.1.0)", "gcsfs (>=0.2.0)", "pyarrow"]
+black = ["black (>=19.3b0)"]
+dev = ["boto3", "botocore", "codecov", "coverage", "google-compute-engine", "ipython (>=5.0)", "ipywidgets", "notebook", "mock", "moto", "pytest (>=4.1)", "pytest-cov (>=2.6.1)", "pytest-mock (>=1.10)", "pytest-env (>=0.6.2)", "requests (>=2.21.0)", "check-manifest", "attrs (>=17.4.0)", "pre-commit", "flake8", "tox", "bumpversion", "recommonmark", "pip (>=18.1)", "wheel (>=0.31.0)", "setuptools (>=38.6.0)", "twine (>=1.11.0)", "azure-datalake-store (>=0.0.30)", "azure-storage-blob (>=12.1.0)", "gcsfs (>=0.2.0)", "pyarrow", "black (>=19.3b0)"]
 gcs = ["gcsfs (>=0.2.0)"]
+github = ["PyGithub (>=1.55)"]
 hdfs = ["pyarrow"]
 s3 = ["boto3"]
-test = ["boto3", "botocore", "codecov", "coverage", "google-compute-engine", "ipython (>=5.0)", "ipywidgets", "notebook", "mock", "moto", "pytest (>=4.1)", "pytest-cov (>=2.6.1)", "pytest-mock (>=1.10)", "pytest-env (>=0.6.2)", "requests (>=2.21.0)", "check-manifest", "attrs (>=17.4.0)", "pre-commit", "flake8", "tox", "bumpversion", "recommonmark", "pip (>=18.1)", "wheel (>=0.31.0)", "setuptools (>=38.6.0)", "twine (>=1.11.0)", "azure-datalake-store (>=0.0.30)", "azure-storage-blob (>=12.1.0)", "gcsfs (>=0.2.0)", "pyarrow"]
+test = ["boto3", "botocore", "codecov", "coverage", "google-compute-engine", "ipython (>=5.0)", "ipywidgets", "notebook", "mock", "moto", "pytest (>=4.1)", "pytest-cov (>=2.6.1)", "pytest-mock (>=1.10)", "pytest-env (>=0.6.2)", "requests (>=2.21.0)", "check-manifest", "attrs (>=17.4.0)", "pre-commit", "flake8", "tox", "bumpversion", "recommonmark", "pip (>=18.1)", "wheel (>=0.31.0)", "setuptools (>=38.6.0)", "twine (>=1.11.0)", "azure-datalake-store (>=0.0.30)", "azure-storage-blob (>=12.1.0)", "gcsfs (>=0.2.0)", "pyarrow", "black (>=19.3b0)"]
 
 [[package]]
 name = "parse"
@@ -807,7 +881,7 @@ python-versions = "*"
 
 [[package]]
 name = "parso"
-version = "0.8.2"
+version = "0.8.3"
 description = "A Python Parser"
 category = "dev"
 optional = false
@@ -844,17 +918,25 @@ category = "dev"
 optional = false
 python-versions = "*"
 
+[[package]]
+name = "pkgutil-resolve-name"
+version = "1.3.10"
+description = "Resolve a name to an object."
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
 [[package]]
 name = "platformdirs"
-version = "2.4.0"
+version = "2.5.2"
 description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
 category = "dev"
 optional = false
-python-versions = ">=3.6"
+python-versions = ">=3.7"
 
 [package.extras]
-test = ["pytest-mock (>=3.6)", "pytest-cov (>=2.7)", "pytest (>=6)", "appdirs (==1.4.4)"]
-docs = ["sphinx-autodoc-typehints (>=1.12)", "proselint (>=0.10.2)", "furo (>=2021.7.5b38)", "Sphinx (>=4)"]
+docs = ["furo (>=2021.7.5b38)", "proselint (>=0.10.2)", "sphinx-autodoc-typehints (>=1.12)", "sphinx (>=4)"]
+test = ["appdirs (==1.4.4)", "pytest-cov (>=2.7)", "pytest-mock (>=3.6)", "pytest (>=6)"]
 
 [[package]]
 name = "pluggy"
@@ -864,35 +946,43 @@ category = "dev"
 optional = false
 python-versions = ">=3.6"
 
-[package.dependencies]
-importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
-
 [package.extras]
 dev = ["pre-commit", "tox"]
 testing = ["pytest", "pytest-benchmark"]
 
 [[package]]
 name = "prometheus-client"
-version = "0.10.1"
+version = "0.14.1"
 description = "Python client for the Prometheus monitoring system."
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+python-versions = ">=3.6"
 
 [package.extras]
 twisted = ["twisted"]
 
 [[package]]
 name = "prompt-toolkit"
-version = "3.0.18"
+version = "3.0.30"
 description = "Library for building powerful interactive command lines in Python"
 category = "dev"
 optional = false
-python-versions = ">=3.6.1"
+python-versions = ">=3.6.2"
 
 [package.dependencies]
 wcwidth = "*"
 
+[[package]]
+name = "psutil"
+version = "5.9.1"
+description = "Cross-platform lib for process and system monitoring in Python."
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[package.extras]
+test = ["ipaddress", "mock", "enum34", "pywin32", "wmi"]
+
 [[package]]
 name = "ptyprocess"
 version = "0.7.0"
@@ -903,15 +993,15 @@ python-versions = "*"
 
 [[package]]
 name = "py"
-version = "1.10.0"
+version = "1.11.0"
 description = "library with cross-python path, ini-parsing, io, code, log facilities"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [[package]]
 name = "pycparser"
-version = "2.20"
+version = "2.21"
 description = "C parser in Python"
 category = "dev"
 optional = false
@@ -919,7 +1009,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [[package]]
 name = "pydocstyle"
-version = "6.0.0"
+version = "6.1.1"
 description = "Python docstring style checker"
 category = "dev"
 optional = false
@@ -928,13 +1018,16 @@ python-versions = ">=3.6"
 [package.dependencies]
 snowballstemmer = "*"
 
+[package.extras]
+toml = ["toml"]
+
 [[package]]
 name = "pygments"
-version = "2.10.0"
+version = "2.12.0"
 description = "Pygments is a syntax highlighting package written in Python."
 category = "dev"
 optional = false
-python-versions = ">=3.5"
+python-versions = ">=3.6"
 
 [[package]]
 name = "pylint"
@@ -956,19 +1049,22 @@ docs = ["sphinx (==3.5.1)", "python-docs-theme (==2020.12)"]
 
 [[package]]
 name = "pyparsing"
-version = "2.4.7"
-description = "Python parsing module"
+version = "3.0.9"
+description = "pyparsing module - Classes and methods to define and execute parsing grammars"
 category = "dev"
 optional = false
-python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
+python-versions = ">=3.6.8"
+
+[package.extras]
+diagrams = ["railroad-diagrams", "jinja2"]
 
 [[package]]
 name = "pyrsistent"
-version = "0.17.3"
+version = "0.18.1"
 description = "Persistent/Functional/Immutable data structures"
 category = "dev"
 optional = false
-python-versions = ">=3.5"
+python-versions = ">=3.7"
 
 [[package]]
 name = "pytest"
@@ -982,7 +1078,6 @@ python-versions = ">=3.6"
 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,<2.0"
@@ -994,7 +1089,7 @@ testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xm
 
 [[package]]
 name = "pytest-cov"
-version = "2.11.1"
+version = "2.12.1"
 description = "Pytest plugin for measuring coverage."
 category = "dev"
 optional = false
@@ -1003,13 +1098,14 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 [package.dependencies]
 coverage = ">=5.2.1"
 pytest = ">=4.6"
+toml = "*"
 
 [package.extras]
-testing = ["fields", "hunter", "process-tests (==2.0.2)", "six", "pytest-xdist", "virtualenv"]
+testing = ["fields", "hunter", "process-tests", "six", "pytest-xdist", "virtualenv"]
 
 [[package]]
 name = "pytest-describe"
-version = "2.0.0"
+version = "2.0.1"
 description = "Describe-style plugin for pytest"
 category = "dev"
 optional = false
@@ -1020,7 +1116,7 @@ pytest = ">=4.0.0"
 
 [[package]]
 name = "pytest-expecter"
-version = "2.2"
+version = "2.3"
 description = "Better testing with expecter and pytest."
 category = "dev"
 optional = false
@@ -1028,11 +1124,11 @@ python-versions = ">=3.6,<4.0"
 
 [[package]]
 name = "pytest-mock"
-version = "3.5.1"
+version = "3.8.2"
 description = "Thin-wrapper around the mock package for easier use with pytest"
 category = "dev"
 optional = false
-python-versions = ">=3.5"
+python-versions = ">=3.7"
 
 [package.dependencies]
 pytest = ">=5.0"
@@ -1094,7 +1190,7 @@ watchdog = ">=0.6.0"
 
 [[package]]
 name = "python-dateutil"
-version = "2.8.1"
+version = "2.8.2"
 description = "Extensions to the standard Python datetime module"
 category = "dev"
 optional = false
@@ -1105,7 +1201,7 @@ six = ">=1.5"
 
 [[package]]
 name = "pywin32"
-version = "301"
+version = "304"
 description = "Python for Window Extensions"
 category = "dev"
 optional = false
@@ -1113,19 +1209,19 @@ python-versions = "*"
 
 [[package]]
 name = "pywinpty"
-version = "0.5.7"
-description = "Python bindings for the winpty library"
+version = "2.0.6"
+description = "Pseudo terminal support for Windows from Python."
 category = "dev"
 optional = false
-python-versions = "*"
+python-versions = ">=3.7"
 
 [[package]]
 name = "pyyaml"
-version = "5.4.1"
+version = "6.0"
 description = "YAML parser and emitter for Python"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*"
+python-versions = ">=3.6"
 
 [[package]]
 name = "pyyaml-env-tag"
@@ -1140,7 +1236,7 @@ pyyaml = "*"
 
 [[package]]
 name = "pyzmq"
-version = "22.0.3"
+version = "23.2.0"
 description = "Python bindings for 0MQ"
 category = "dev"
 optional = false
@@ -1152,11 +1248,11 @@ py = {version = "*", markers = "implementation_name == \"pypy\""}
 
 [[package]]
 name = "qtconsole"
-version = "5.0.3"
+version = "5.3.1"
 description = "Jupyter Qt console"
 category = "dev"
 optional = false
-python-versions = ">= 3.6"
+python-versions = ">= 3.7"
 
 [package.dependencies]
 ipykernel = ">=4.1"
@@ -1165,8 +1261,8 @@ jupyter-client = ">=4.1"
 jupyter-core = "*"
 pygments = "*"
 pyzmq = ">=17.1"
-qtpy = "*"
-traitlets = "*"
+qtpy = ">=2.0.1"
+traitlets = "<5.2.1 || >5.2.1,<5.2.2 || >5.2.2"
 
 [package.extras]
 doc = ["Sphinx (>=1.3)"]
@@ -1174,29 +1270,35 @@ test = ["flaky", "pytest", "pytest-qt"]
 
 [[package]]
 name = "qtpy"
-version = "1.9.0"
-description = "Provides an abstraction layer on top of the various Qt bindings (PyQt5, PyQt4 and PySide) and additional custom QWidgets."
+version = "2.1.0"
+description = "Provides an abstraction layer on top of the various Qt bindings (PyQt5/6 and PySide2/6)."
 category = "dev"
 optional = false
-python-versions = "*"
+python-versions = ">=3.7"
+
+[package.dependencies]
+packaging = "*"
+
+[package.extras]
+test = ["pytest-qt", "pytest-cov (>=3.0.0)", "pytest (>=6,!=7.0.0,!=7.0.1)"]
 
 [[package]]
 name = "requests"
-version = "2.26.0"
+version = "2.28.1"
 description = "Python HTTP for Humans."
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*"
+python-versions = ">=3.7, <4"
 
 [package.dependencies]
 certifi = ">=2017.4.17"
-charset-normalizer = {version = ">=2.0.0,<2.1.0", markers = "python_version >= \"3\""}
-idna = {version = ">=2.5,<4", markers = "python_version >= \"3\""}
+charset-normalizer = ">=2,<3"
+idna = ">=2.5,<4"
 urllib3 = ">=1.21.1,<1.27"
 
 [package.extras]
-socks = ["PySocks (>=1.5.6,!=1.5.7)", "win-inet-pton"]
-use_chardet_on_py3 = ["chardet (>=3.0.2,<5)"]
+socks = ["PySocks (>=1.5.6,!=1.5.7)"]
+use_chardet_on_py3 = ["chardet (>=3.0.2,<6)"]
 
 [[package]]
 name = "ruamel.yaml"
@@ -1236,7 +1338,7 @@ nativelib = ["pywin32", "pyobjc-framework-cocoa"]
 
 [[package]]
 name = "six"
-version = "1.15.0"
+version = "1.16.0"
 description = "Python 2 and 3 compatibility utilities"
 category = "dev"
 optional = false
@@ -1244,60 +1346,69 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
 
 [[package]]
 name = "snowballstemmer"
-version = "2.1.0"
+version = "2.2.0"
 description = "This package provides 29 stemmers for 28 languages generated from Snowball algorithms."
 category = "dev"
 optional = false
 python-versions = "*"
 
+[[package]]
+name = "soupsieve"
+version = "2.3.2.post1"
+description = "A modern CSS selector implementation for Beautiful Soup."
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
 [[package]]
 name = "tenacity"
-version = "7.0.0"
+version = "8.0.1"
 description = "Retry code until it succeeds"
 category = "dev"
 optional = false
-python-versions = "*"
-
-[package.dependencies]
-six = ">=1.9.0"
+python-versions = ">=3.6"
 
 [package.extras]
 doc = ["reno", "sphinx", "tornado (>=4.5)"]
 
 [[package]]
 name = "terminado"
-version = "0.9.4"
+version = "0.15.0"
 description = "Tornado websocket backend for the Xterm.js Javascript terminal emulator library."
 category = "dev"
 optional = false
-python-versions = ">=3.6"
+python-versions = ">=3.7"
 
 [package.dependencies]
 ptyprocess = {version = "*", markers = "os_name != \"nt\""}
-pywinpty = {version = ">=0.5", markers = "os_name == \"nt\""}
-tornado = ">=4"
+pywinpty = {version = ">=1.1.0", markers = "os_name == \"nt\""}
+tornado = ">=6.1.0"
 
 [package.extras]
-test = ["pytest"]
+test = ["pre-commit", "pytest-timeout", "pytest (>=6.0)"]
 
 [[package]]
-name = "testpath"
-version = "0.4.4"
-description = "Test utilities for code working with files and commands"
+name = "textwrap3"
+version = "0.9.2"
+description = "textwrap from Python 3.6 backport (plus a few tweaks)"
 category = "dev"
 optional = false
 python-versions = "*"
 
-[package.extras]
-test = ["pathlib2"]
-
 [[package]]
-name = "textwrap3"
-version = "0.9.2"
-description = "textwrap from Python 3.6 backport (plus a few tweaks)"
+name = "tinycss2"
+version = "1.1.1"
+description = "A tiny CSS parser"
 category = "dev"
 optional = false
-python-versions = "*"
+python-versions = ">=3.6"
+
+[package.dependencies]
+webencodings = ">=0.4"
+
+[package.extras]
+test = ["coverage", "pytest-isort", "pytest-flake8", "pytest-cov", "pytest"]
+doc = ["sphinx-rtd-theme", "sphinx"]
 
 [[package]]
 name = "toml"
@@ -1309,15 +1420,15 @@ python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
 
 [[package]]
 name = "tomli"
-version = "1.2.1"
+version = "2.0.1"
 description = "A lil' TOML parser"
 category = "dev"
 optional = false
-python-versions = ">=3.6"
+python-versions = ">=3.7"
 
 [[package]]
 name = "tomlkit"
-version = "0.10.1"
+version = "0.10.2"
 description = "Style preserving TOML library"
 category = "main"
 optional = false
@@ -1325,78 +1436,71 @@ python-versions = ">=3.6,<4.0"
 
 [[package]]
 name = "tornado"
-version = "6.1"
+version = "6.2"
 description = "Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed."
 category = "dev"
 optional = false
-python-versions = ">= 3.5"
+python-versions = ">= 3.7"
 
 [[package]]
 name = "tqdm"
-version = "4.60.0"
+version = "4.64.0"
 description = "Fast, Extensible Progress Meter"
 category = "dev"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
 
+[package.dependencies]
+colorama = {version = "*", markers = "platform_system == \"Windows\""}
+
 [package.extras]
 dev = ["py-make (>=0.1.0)", "twine", "wheel"]
 notebook = ["ipywidgets (>=6)"]
+slack = ["slack-sdk"]
 telegram = ["requests"]
 
 [[package]]
 name = "traitlets"
-version = "5.0.5"
-description = "Traitlets Python configuration system"
+version = "5.3.0"
+description = ""
 category = "dev"
 optional = false
 python-versions = ">=3.7"
 
-[package.dependencies]
-ipython-genutils = "*"
-
 [package.extras]
-test = ["pytest"]
-
-[[package]]
-name = "typed-ast"
-version = "1.4.3"
-description = "a fork of Python 2 and 3 ast modules with type comment support"
-category = "dev"
-optional = false
-python-versions = "*"
+test = ["pre-commit", "pytest"]
 
 [[package]]
 name = "typing-extensions"
-version = "3.10.0.2"
-description = "Backported and Experimental Type Hints for Python 3.5+"
-category = "main"
+version = "4.3.0"
+description = "Backported and Experimental Type Hints for Python 3.7+"
+category = "dev"
 optional = false
-python-versions = "*"
+python-versions = ">=3.7"
 
 [[package]]
 name = "urllib3"
-version = "1.26.5"
+version = "1.26.11"
 description = "HTTP library with thread-safe connection pooling, file post, and more."
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*, <4"
 
 [package.extras]
-brotli = ["brotlipy (>=0.6.0)"]
+brotli = ["brotlicffi (>=0.8.0)", "brotli (>=1.0.9)", "brotlipy (>=0.6.0)"]
 secure = ["pyOpenSSL (>=0.14)", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "certifi", "ipaddress"]
 socks = ["PySocks (>=1.5.6,!=1.5.7,<2.0)"]
 
 [[package]]
 name = "watchdog"
-version = "2.0.3"
+version = "2.1.9"
 description = "Filesystem events monitoring"
 category = "dev"
 optional = false
 python-versions = ">=3.6"
 
 [package.extras]
-watchmedo = ["PyYAML (>=3.10)", "argh (>=0.24.1)"]
+watchmedo = ["PyYAML (>=3.10)"]
 
 [[package]]
 name = "wcwidth"
@@ -1416,7 +1520,7 @@ python-versions = "*"
 
 [[package]]
 name = "widgetsnbextension"
-version = "3.5.1"
+version = "3.6.1"
 description = "IPython HTML widgets for Jupyter"
 category = "dev"
 optional = false
@@ -1435,174 +1539,78 @@ python-versions = "*"
 
 [[package]]
 name = "zipp"
-version = "3.4.1"
+version = "3.8.1"
 description = "Backport of pathlib-compatible object wrapper for zip files"
 category = "dev"
 optional = false
-python-versions = ">=3.6"
+python-versions = ">=3.7"
 
 [package.extras]
-docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
-testing = ["pytest (>=4.6)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pytest-cov", "pytest-enabler", "jaraco.itertools", "func-timeout", "pytest-black (>=0.3.7)", "pytest-mypy"]
+docs = ["sphinx", "jaraco.packaging (>=9)", "rst.linker (>=1.9)", "jaraco.tidelift (>=1.4)"]
+testing = ["pytest (>=6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.3)", "jaraco.itertools", "func-timeout", "pytest-black (>=0.3.7)", "pytest-mypy (>=0.9.1)"]
 
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-python-versions = "^3.7"
-content-hash = "1bfa9c6c1adeb478f6f69319e384be24b4694d03b266c2f4c98499c8c2cae856"
+python-versions = "^3.8"
+content-hash = "eb3f9d5b068599a7fa6d0d86658ed3ce885ec07118a7d6c8e4af3ce032c27615"
 
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 ]
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@@ -1883,73 +1939,35 @@ requests = []
 ]
 send2trash = []
 six = [
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+    {file = "six-1.16.0-py2.py3-none-any.whl", hash = "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"},
+    {file = "six-1.16.0.tar.gz", hash = "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926"},
 ]
 snowballstemmer = [
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+    {file = "snowballstemmer-2.2.0.tar.gz", hash = "sha256:09b16deb8547d3412ad7b590689584cd0fe25ec8db3be37788be3810cbf19cb1"},
 ]
+soupsieve = []
 tenacity = []
 terminado = []
-testpath = []
 textwrap3 = []
+tinycss2 = []
 toml = [
     {file = "toml-0.10.2-py2.py3-none-any.whl", hash = "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b"},
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+    {file = "tomli-2.0.1-py3-none-any.whl", hash = "sha256:939de3e7a6161af0c887ef91b7d41a53e7c5a1ca976325f429cb46ea9bc30ecc"},
+    {file = "tomli-2.0.1.tar.gz", hash = "sha256:de526c12914f0c550d15924c62d72abc48d6fe7364aa87328337a31007fe8a4f"},
+]
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 ]
-tomlkit = []
 tornado = []
 tqdm = []
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-    {file = "typed_ast-1.4.3.tar.gz", hash = "sha256:fb1bbeac803adea29cedd70781399c99138358c26d05fcbd23c13016b7f5ec65"},
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-typing-extensions = [
-    {file = "typing_extensions-3.10.0.2-py2-none-any.whl", hash = "sha256:d8226d10bc02a29bcc81df19a26e56a9647f8b0a6d4a83924139f4a8b01f17b7"},
-    {file = "typing_extensions-3.10.0.2-py3-none-any.whl", hash = "sha256:f1d25edafde516b146ecd0613dabcc61409817af4766fbbcfb8d1ad4ec441a34"},
-    {file = "typing_extensions-3.10.0.2.tar.gz", hash = "sha256:49f75d16ff11f1cd258e1b988ccff82a3ca5570217d7ad8c5f48205dd99a677e"},
-]
-urllib3 = [
-    {file = "urllib3-1.26.5-py2.py3-none-any.whl", hash = "sha256:753a0374df26658f99d826cfe40394a686d05985786d946fbe4165b5148f5a7c"},
-    {file = "urllib3-1.26.5.tar.gz", hash = "sha256:a7acd0977125325f516bda9735fa7142b909a8d01e8b2e4c8108d0984e6e0098"},
-]
+traitlets = []
+typing-extensions = []
+urllib3 = []
 watchdog = []
 wcwidth = [
     {file = "wcwidth-0.2.5-py2.py3-none-any.whl", hash = "sha256:beb4802a9cebb9144e99086eff703a642a13d6a0052920003a230f3294bbe784"},
@@ -1960,7 +1978,4 @@ widgetsnbextension = []
 wrapt = [
     {file = "wrapt-1.12.1.tar.gz", hash = "sha256:b62ffa81fb85f4332a4f609cab4ac40709470da05643a082ec1eb88e6d9b97d7"},
 ]
-zipp = [
-    {file = "zipp-3.4.1-py3-none-any.whl", hash = "sha256:51cb66cc54621609dd593d1787f286ee42a5c0adbb4b29abea5a63edc3e03098"},
-    {file = "zipp-3.4.1.tar.gz", hash = "sha256:3607921face881ba3e026887d8150cca609d517579abe052ac81fc5aeffdbd76"},
-]
+zipp = []
diff --git a/pyproject.toml b/pyproject.toml
index fbeadc08..834aa04f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [tool.poetry]
 
 name = "datafiles"
-version = "1.4.2"
+version = "2.0a1"
 description = "File-based ORM for dataclasses."
 
 license = "MIT"
@@ -30,7 +30,6 @@ classifiers = [
     "Natural Language :: English",
     "Operating System :: OS Independent",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
@@ -41,7 +40,7 @@ classifiers = [
 
 [tool.poetry.dependencies]
 
-python = "^3.7"
+python = "^3.8"
 
 # Formats
 "ruamel.yaml" = "^0.17.21"
@@ -55,9 +54,6 @@ cached_property = "^1.5"
 classproperties = "^0.2"
 minilog = "^2.1"
 
-# Typing
-typing-extensions = "^3.7" # remove this when Python 3.7 support is dropped
-
 [tool.poetry.dev-dependencies]
 
 # Formatters