diff --git a/poetry.lock b/poetry.lock
index 1e7660f..bd35680 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -15,10 +15,10 @@ optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [package.extras]
-dev = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "zope.interface", "furo", "sphinx", "sphinx-notfound-page", "pre-commit"]
-docs = ["furo", "sphinx", "zope.interface", "sphinx-notfound-page"]
-tests = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "zope.interface"]
-tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins"]
+dev = ["coverage[toml] (>=5.0.2)", "furo", "hypothesis", "mypy", "pre-commit", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins", "six", "sphinx", "sphinx-notfound-page", "zope.interface"]
+docs = ["furo", "sphinx", "sphinx-notfound-page", "zope.interface"]
+tests = ["coverage[toml] (>=5.0.2)", "hypothesis", "mypy", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins", "six", "zope.interface"]
+tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "mypy", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins", "six"]
 
 [[package]]
 name = "beautifulsoup4"
@@ -122,12 +122,12 @@ python-versions = ">=3.6"
 cffi = ">=1.12"
 
 [package.extras]
-docs = ["sphinx (>=1.6.5,!=1.8.0,!=3.1.0,!=3.1.1)", "sphinx-rtd-theme"]
-docstest = ["doc8", "pyenchant (>=1.6.11)", "twine (>=1.12.0)", "sphinxcontrib-spelling (>=4.0.1)"]
+docs = ["sphinx (>=1.6.5,!=1.8.0,!=3.1.0,!=3.1.1)", "sphinx_rtd_theme"]
+docstest = ["doc8", "pyenchant (>=1.6.11)", "sphinxcontrib-spelling (>=4.0.1)", "twine (>=1.12.0)"]
 pep8test = ["black", "flake8", "flake8-import-order", "pep8-naming"]
 sdist = ["setuptools-rust (>=0.11.4)"]
 ssh = ["bcrypt (>=3.1.5)"]
-test = ["pytest (>=6.0)", "pytest-cov", "pytest-subtests", "pytest-xdist", "pretend", "iso8601", "pytz", "hypothesis (>=1.11.4,!=3.79.2)"]
+test = ["hypothesis (>=1.11.4,!=3.79.2)", "iso8601", "pretend", "pytest (>=6.0)", "pytest-cov", "pytest-subtests", "pytest-xdist", "pytz"]
 
 [[package]]
 name = "daeclipse"
@@ -172,7 +172,7 @@ beautifulsoup4 = ">4.7,<4.8"
 lxml = "*"
 
 [package.extras]
-dev = ["pre-commit", "mock", "pytest"]
+dev = ["mock", "pre-commit", "pytest"]
 
 [[package]]
 name = "idna"
@@ -195,9 +195,9 @@ 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)"]
+docs = ["jaraco.packaging (>=8.2)", "rst.linker (>=1.9)", "sphinx"]
 perf = ["ipython"]
-testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "packaging", "pep517", "pyfakefs", "flufl.flake8", "pytest-perf (>=0.9.2)", "pytest-black (>=0.3.7)", "pytest-mypy", "importlib-resources (>=1.3)"]
+testing = ["flufl.flake8", "importlib-resources (>=1.3)", "packaging", "pep517", "pyfakefs", "pytest (>=4.6)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=1.0.1)", "pytest-flake8", "pytest-mypy", "pytest-perf (>=0.9.2)"]
 
 [[package]]
 name = "iniconfig"
@@ -216,8 +216,8 @@ optional = false
 python-versions = ">=3.6"
 
 [package.extras]
-test = ["pytest", "pytest-trio", "pytest-asyncio", "testpath", "trio", "async-timeout"]
-trio = ["trio", "async-generator"]
+test = ["async-timeout", "pytest", "pytest-asyncio", "pytest-trio", "testpath", "trio"]
+trio = ["async_generator", "trio"]
 
 [[package]]
 name = "keyring"
@@ -234,8 +234,8 @@ pywin32-ctypes = {version = "<0.1.0 || >0.1.0,<0.1.1 || >0.1.1", markers = "sys_
 SecretStorage = {version = ">=3.2", markers = "sys_platform == \"linux\""}
 
 [package.extras]
-docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
-testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "pytest-black (>=0.3.7)", "pytest-mypy"]
+docs = ["jaraco.packaging (>=8.2)", "rst.linker (>=1.9)", "sphinx"]
+testing = ["pytest (>=4.6)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=1.0.1)", "pytest-flake8", "pytest-mypy"]
 
 [[package]]
 name = "lxml"
@@ -248,7 +248,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, != 3.4.*"
 [package.extras]
 cssselect = ["cssselect (>=0.7)"]
 html5 = ["html5lib"]
-htmlsoup = ["beautifulsoup4"]
+htmlsoup = ["BeautifulSoup4"]
 source = ["Cython (>=0.29.7)"]
 
 [[package]]
@@ -262,25 +262,26 @@ python-versions = ">=3.5"
 [package.extras]
 docs = ["sphinx (>=1.6.0)", "sphinx-bootstrap-theme"]
 flake8 = ["flake8"]
-tests = ["pytest (!=3.3.0)", "psutil", "pytest-cov"]
+tests = ["psutil", "pytest (!=3.3.0)", "pytest-cov"]
 
 [[package]]
 name = "mypy"
-version = "0.910"
+version = "0.981"
 description = "Optional static typing for Python"
 category = "dev"
 optional = false
-python-versions = ">=3.5"
+python-versions = ">=3.7"
 
 [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"
+mypy-extensions = ">=0.4.3"
+tomli = {version = ">=1.1.0", markers = "python_version < \"3.11\""}
+typed-ast = {version = ">=1.4.0,<2", markers = "python_version < \"3.8\""}
+typing-extensions = ">=3.10"
 
 [package.extras]
 dmypy = ["psutil (>=4.0)"]
-python2 = ["typed-ast (>=1.4.0,<1.5.0)"]
+python2 = ["typed-ast (>=1.4.0,<2)"]
+reports = ["lxml"]
 
 [[package]]
 name = "mypy-extensions"
@@ -496,6 +497,14 @@ category = "dev"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
 
+[[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 = "1.4.3"
@@ -518,10 +527,10 @@ colorama = {version = ">=0.4.3,<0.5.0", optional = true, markers = "extra == \"a
 shellingham = {version = ">=1.3.0,<2.0.0", optional = true, markers = "extra == \"all\""}
 
 [package.extras]
-test = ["pytest-xdist (>=1.32.0,<2.0.0)", "pytest-sugar (>=0.9.4,<0.10.0)", "mypy (==0.782)", "black (>=19.10b0,<20.0b0)", "isort (>=5.0.6,<6.0.0)", "shellingham (>=1.3.0,<2.0.0)", "pytest (>=4.4.0,<5.4.0)", "pytest-cov (>=2.10.0,<3.0.0)", "coverage (>=5.2,<6.0)"]
 all = ["colorama (>=0.4.3,<0.5.0)", "shellingham (>=1.3.0,<2.0.0)"]
 dev = ["autoflake (>=1.3.1,<2.0.0)", "flake8 (>=3.8.3,<4.0.0)"]
-doc = ["mkdocs (>=1.1.2,<2.0.0)", "mkdocs-material (>=5.4.0,<6.0.0)", "markdown-include (>=0.5.1,<0.6.0)"]
+doc = ["markdown-include (>=0.5.1,<0.6.0)", "mkdocs (>=1.1.2,<2.0.0)", "mkdocs-material (>=5.4.0,<6.0.0)"]
+test = ["black (>=19.10b0,<20.0b0)", "coverage (>=5.2,<6.0)", "isort (>=5.0.6,<6.0.0)", "mypy (==0.782)", "pytest (>=4.4.0,<5.4.0)", "pytest-cov (>=2.10.0,<3.0.0)", "pytest-sugar (>=0.9.4,<0.10.0)", "pytest-xdist (>=1.32.0,<2.0.0)", "shellingham (>=1.3.0,<2.0.0)"]
 
 [[package]]
 name = "typing-extensions"
@@ -549,7 +558,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
 
 [package.extras]
 brotli = ["brotlipy (>=0.6.0)"]
-secure = ["pyOpenSSL (>=0.14)", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "certifi", "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]]
@@ -569,13 +578,13 @@ optional = false
 python-versions = ">=3.6"
 
 [package.extras]
-docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
-testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "jaraco.itertools", "func-timeout", "pytest-black (>=0.3.7)", "pytest-mypy"]
+docs = ["jaraco.packaging (>=8.2)", "rst.linker (>=1.9)", "sphinx"]
+testing = ["func-timeout", "jaraco.itertools", "pytest (>=4.6)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=1.0.1)", "pytest-flake8", "pytest-mypy"]
 
 [metadata]
 lock-version = "1.1"
 python-versions = ">=3.7,<4.0.0"
-content-hash = "3ced328ddcf129baa9f50fa9297105d1f4425d7eb7fdca47569d66abc00c75ba"
+content-hash = "b8b6a5dd5672c420ce31fe8f743d204ac1f09be058142f103f55fb3817539271"
 
 [metadata.files]
 atomicwrites = [
@@ -671,8 +680,10 @@ cryptography = [
     {file = "cryptography-3.4.7-cp36-abi3-win_amd64.whl", hash = "sha256:de4e5f7f68220d92b7637fc99847475b59154b7a1b3868fb7385337af54ac9ca"},
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+    {file = "cryptography-3.4.7-pp37-pypy37_pp73-macosx_10_10_x86_64.whl", hash = "sha256:b01fd6f2737816cb1e08ed4807ae194404790eac7ad030b34f2ce72b332f5586"},
     {file = "cryptography-3.4.7-pp37-pypy37_pp73-manylinux2010_x86_64.whl", hash = "sha256:7ec5d3b029f5fa2b179325908b9cd93db28ab7b85bb6c1db56b10e0b54235177"},
     {file = "cryptography-3.4.7-pp37-pypy37_pp73-manylinux2014_x86_64.whl", hash = "sha256:ee77aa129f481be46f8d92a1a7db57269a2f23052d5f2433b4621bb457081cc9"},
+    {file = "cryptography-3.4.7-pp37-pypy37_pp73-win_amd64.whl", hash = "sha256:bf40af59ca2465b24e54f671b2de2c59257ddc4f7e5706dbd6930e26823668d3"},
     {file = "cryptography-3.4.7.tar.gz", hash = "sha256:3d10de8116d25649631977cb37da6cbdd2d6fa0e0281d014a5b7d337255ca713"},
 ]
 daeclipse = [
@@ -713,6 +724,8 @@ lxml = [
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@@ -787,29 +800,30 @@ lz4 = [
     {file = "lz4-3.1.3.tar.gz", hash = "sha256:081ef0a3b5941cb03127f314229a1c78bd70c9c220bb3f4dd80033e707feaa18"},
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 mypy = [
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+    {file = "mypy-0.981-cp37-cp37m-win_amd64.whl", hash = "sha256:9f362470a3480165c4c6151786b5379351b790d56952005be18bdbdd4c7ce0ae"},
+    {file = "mypy-0.981-cp38-cp38-macosx_10_9_universal2.whl", hash = "sha256:c9e0efb95ed6ca1654951bd5ec2f3fa91b295d78bf6527e026529d4aaa1e0c30"},
+    {file = "mypy-0.981-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:e178eaffc3c5cd211a87965c8c0df6da91ed7d258b5fc72b8e047c3771317ddb"},
+    {file = "mypy-0.981-cp38-cp38-macosx_11_0_arm64.whl", hash = "sha256:06e1eac8d99bd404ed8dd34ca29673c4346e76dd8e612ea507763dccd7e13c7a"},
+    {file = "mypy-0.981-cp38-cp38-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:fa38f82f53e1e7beb45557ff167c177802ba7b387ad017eab1663d567017c8ee"},
+    {file = "mypy-0.981-cp38-cp38-musllinux_1_1_x86_64.whl", hash = "sha256:64e1f6af81c003f85f0dfed52db632817dabb51b65c0318ffbf5ff51995bbb08"},
+    {file = "mypy-0.981-cp38-cp38-win_amd64.whl", hash = "sha256:e1acf62a8c4f7c092462c738aa2c2489e275ed386320c10b2e9bff31f6f7e8d6"},
+    {file = "mypy-0.981-cp39-cp39-macosx_10_9_universal2.whl", hash = "sha256:b6ede64e52257931315826fdbfc6ea878d89a965580d1a65638ef77cb551f56d"},
+    {file = "mypy-0.981-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:eb3978b191b9fa0488524bb4ffedf2c573340e8c2b4206fc191d44c7093abfb7"},
+    {file = "mypy-0.981-cp39-cp39-macosx_11_0_arm64.whl", hash = "sha256:77f8fcf7b4b3cc0c74fb33ae54a4cd00bb854d65645c48beccf65fa10b17882c"},
+    {file = "mypy-0.981-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:f64d2ce043a209a297df322eb4054dfbaa9de9e8738291706eaafda81ab2b362"},
+    {file = "mypy-0.981-cp39-cp39-musllinux_1_1_x86_64.whl", hash = "sha256:2ee3dbc53d4df7e6e3b1c68ac6a971d3a4fb2852bf10a05fda228721dd44fae1"},
+    {file = "mypy-0.981-cp39-cp39-win_amd64.whl", hash = "sha256:8e8e49aa9cc23aa4c926dc200ce32959d3501c4905147a66ce032f05cb5ecb92"},
+    {file = "mypy-0.981-py3-none-any.whl", hash = "sha256:794f385653e2b749387a42afb1e14c2135e18daeb027e0d97162e4b7031210f8"},
+    {file = "mypy-0.981.tar.gz", hash = "sha256:ad77c13037d3402fbeffda07d51e3f228ba078d1c7096a73759c9419ea031bf4"},
 ]
 mypy-extensions = [
     {file = "mypy_extensions-0.4.3-py2.py3-none-any.whl", hash = "sha256:090fedd75945a69ae91ce1303b5824f428daf5a028d2f6ab8a299250a846f15d"},
@@ -919,6 +933,10 @@ toml = [
     {file = "toml-0.10.2-py2.py3-none-any.whl", hash = "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b"},
     {file = "toml-0.10.2.tar.gz", hash = "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"},
 ]
+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-1.4.3-cp35-cp35m-manylinux1_i686.whl", hash = "sha256:2068531575a125b87a41802130fa7e29f26c09a2833fea68d9a40cf33902eba6"},
     {file = "typed_ast-1.4.3-cp35-cp35m-manylinux1_x86_64.whl", hash = "sha256:c907f561b1e83e93fad565bac5ba9c22d96a54e7ea0267c708bffe863cbe4075"},
diff --git a/pyproject.toml b/pyproject.toml
index 4c7ee5d..68dc588 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,7 @@ typer = {extras = ["all"], version = "^0.3.2"}
 
 [tool.poetry.dev-dependencies]
 pytest = "^6.2"
-mypy = "^0.910"
+mypy = "^0.981"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]