diff --git a/poetry.lock b/poetry.lock
index 66909fea..aa669793 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -55,7 +55,7 @@ testing = ["pytest (>=4.6)", "pytest-flake8", "pytest-cov", "pytest-black (>=0.3
 
 [[package]]
 name = "black"
-version = "21.11b1"
+version = "21.12b0"
 description = "The uncompromising code formatter."
 category = "dev"
 optional = false
@@ -66,7 +66,6 @@ click = ">=7.1.2"
 mypy-extensions = ">=0.4.3"
 pathspec = ">=0.9.0,<1"
 platformdirs = ">=2"
-regex = ">=2021.4.4"
 tomli = ">=0.2.6,<2.0.0"
 typed-ast = {version = ">=1.4.2", markers = "python_version < \"3.8\" and implementation_name == \"cpython\""}
 typing-extensions = [
@@ -433,14 +432,6 @@ category = "dev"
 optional = false
 python-versions = ">=3.6"
 
-[[package]]
-name = "regex"
-version = "2021.8.21"
-description = "Alternative regular expression module, to replace re."
-category = "dev"
-optional = false
-python-versions = "*"
-
 [[package]]
 name = "rfc3986"
 version = "1.5.0"
@@ -575,7 +566,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7"
-content-hash = "76f5f09a6a1138c71a661ced3389574bf8c162121114d1bfc9855f680cf016af"
+content-hash = "0696dca9aeb87a3e255ce2633f6efe4c561f1f1feee4b9750c807552ebc3a2fe"
 
 [metadata.files]
 anyio = [
@@ -595,8 +586,8 @@ attrs = [
     {file = "backports.entry_points_selectable-1.1.0.tar.gz", hash = "sha256:988468260ec1c196dab6ae1149260e2f5472c9110334e5d51adcb77867361f6a"},
 ]
 black = [
-    {file = "black-21.11b1-py3-none-any.whl", hash = "sha256:802c6c30b637b28645b7fde282ed2569c0cd777dbe493a41b6a03c1d903f99ac"},
-    {file = "black-21.11b1.tar.gz", hash = "sha256:a042adbb18b3262faad5aff4e834ff186bb893f95ba3a8013f09de1e5569def2"},
+    {file = "black-21.12b0-py3-none-any.whl", hash = "sha256:a615e69ae185e08fdd73e4715e260e2479c861b5740057fde6e8b4e3b7dd589f"},
+    {file = "black-21.12b0.tar.gz", hash = "sha256:77b80f693a569e2e527958459634f18df9b0ba2625ba4e0c2d5da5be42e6f2b3"},
 ]
 certifi = [
     {file = "certifi-2021.5.30-py2.py3-none-any.whl", hash = "sha256:50b1e4f8446b06f41be7dd6338db18e0990601dce795c2b1686458aa7e8fa7d8"},
@@ -812,49 +803,6 @@ pyyaml = [
     {file = "PyYAML-6.0-cp39-cp39-win_amd64.whl", hash = "sha256:b3d267842bf12586ba6c734f89d1f5b871df0273157918b0ccefa29deb05c21c"},
     {file = "PyYAML-6.0.tar.gz", hash = "sha256:68fb519c14306fec9720a2a5b45bc9f0c8d1b9c72adf45c37baedfcd949c35a2"},
 ]
-regex = [
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-    {file = "regex-2021.8.21-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:5d5209c3ba25864b1a57461526ebde31483db295fc6195fdfc4f8355e10f7376"},
-    {file = "regex-2021.8.21-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:c835c30f3af5c63a80917b72115e1defb83de99c73bc727bddd979a3b449e183"},
-    {file = "regex-2021.8.21-cp310-cp310-manylinux_2_5_i686.manylinux1_i686.manylinux_2_12_i686.manylinux2010_i686.whl", hash = "sha256:615fb5a524cffc91ab4490b69e10ae76c1ccbfa3383ea2fad72e54a85c7d47dd"},
-    {file = "regex-2021.8.21-cp310-cp310-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:9966337353e436e6ba652814b0a957a517feb492a98b8f9d3b6ba76d22301dcc"},
-    {file = "regex-2021.8.21-cp310-cp310-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:a49f85f0a099a5755d0a2cc6fc337e3cb945ad6390ec892332c691ab0a045882"},
-    {file = "regex-2021.8.21-cp310-cp310-win32.whl", hash = "sha256:f93a9d8804f4cec9da6c26c8cfae2c777028b4fdd9f49de0302e26e00bb86504"},
-    {file = "regex-2021.8.21-cp310-cp310-win_amd64.whl", hash = "sha256:a795829dc522227265d72b25d6ee6f6d41eb2105c15912c230097c8f5bfdbcdc"},
-    {file = "regex-2021.8.21-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:bca14dfcfd9aae06d7d8d7e105539bd77d39d06caaae57a1ce945670bae744e0"},
-    {file = "regex-2021.8.21-cp36-cp36m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:41acdd6d64cd56f857e271009966c2ffcbd07ec9149ca91f71088574eaa4278a"},
-    {file = "regex-2021.8.21-cp36-cp36m-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:96f0c79a70642dfdf7e6a018ebcbea7ea5205e27d8e019cad442d2acfc9af267"},
-    {file = "regex-2021.8.21-cp36-cp36m-manylinux_2_5_i686.manylinux1_i686.manylinux_2_12_i686.manylinux2010_i686.whl", hash = "sha256:45f97ade892ace20252e5ccecdd7515c7df5feeb42c3d2a8b8c55920c3551c30"},
-    {file = "regex-2021.8.21-cp36-cp36m-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:1f9974826aeeda32a76648fc677e3125ade379869a84aa964b683984a2dea9f1"},
-    {file = "regex-2021.8.21-cp36-cp36m-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:ea9753d64cba6f226947c318a923dadaf1e21cd8db02f71652405263daa1f033"},
-    {file = "regex-2021.8.21-cp36-cp36m-win32.whl", hash = "sha256:ef9326c64349e2d718373415814e754183057ebc092261387a2c2f732d9172b2"},
-    {file = "regex-2021.8.21-cp36-cp36m-win_amd64.whl", hash = "sha256:6dbd51c3db300ce9d3171f4106da18fe49e7045232630fe3d4c6e37cb2b39ab9"},
-    {file = "regex-2021.8.21-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:a89ca4105f8099de349d139d1090bad387fe2b208b717b288699ca26f179acbe"},
-    {file = "regex-2021.8.21-cp37-cp37m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:d6c2b1d78ceceb6741d703508cd0e9197b34f6bf6864dab30f940f8886e04ade"},
-    {file = "regex-2021.8.21-cp37-cp37m-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:a34ba9e39f8269fd66ab4f7a802794ffea6d6ac500568ec05b327a862c21ce23"},
-    {file = "regex-2021.8.21-cp37-cp37m-manylinux_2_5_i686.manylinux1_i686.manylinux_2_12_i686.manylinux2010_i686.whl", hash = "sha256:ecb6e7c45f9cd199c10ec35262b53b2247fb9a408803ed00ee5bb2b54aa626f5"},
-    {file = "regex-2021.8.21-cp37-cp37m-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:330836ad89ff0be756b58758878409f591d4737b6a8cef26a162e2a4961c3321"},
-    {file = "regex-2021.8.21-cp37-cp37m-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:71a904da8c9c02aee581f4452a5a988c3003207cb8033db426f29e5b2c0b7aea"},
-    {file = "regex-2021.8.21-cp37-cp37m-win32.whl", hash = "sha256:b511c6009d50d5c0dd0bab85ed25bc8ad6b6f5611de3a63a59786207e82824bb"},
-    {file = "regex-2021.8.21-cp37-cp37m-win_amd64.whl", hash = "sha256:93f9f720081d97acee38a411e861d4ce84cbc8ea5319bc1f8e38c972c47af49f"},
-    {file = "regex-2021.8.21-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:3a195e26df1fbb40ebee75865f9b64ba692a5824ecb91c078cc665b01f7a9a36"},
-    {file = "regex-2021.8.21-cp38-cp38-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:06ba444bbf7ede3890a912bd4904bb65bf0da8f0d8808b90545481362c978642"},
-    {file = "regex-2021.8.21-cp38-cp38-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:8b8d551f1bd60b3e1c59ff55b9e8d74607a5308f66e2916948cafd13480b44a3"},
-    {file = "regex-2021.8.21-cp38-cp38-manylinux_2_5_i686.manylinux1_i686.manylinux_2_12_i686.manylinux2010_i686.whl", hash = "sha256:ebbceefbffae118ab954d3cd6bf718f5790db66152f95202ebc231d58ad4e2c2"},
-    {file = "regex-2021.8.21-cp38-cp38-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:ccd721f1d4fc42b541b633d6e339018a08dd0290dc67269df79552843a06ca92"},
-    {file = "regex-2021.8.21-cp38-cp38-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:ae87ab669431f611c56e581679db33b9a467f87d7bf197ac384e71e4956b4456"},
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-    {file = "regex-2021.8.21-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:b091dcfee169ad8de21b61eb2c3a75f9f0f859f851f64fdaf9320759a3244239"},
-    {file = "regex-2021.8.21-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:640ccca4d0a6fcc6590f005ecd7b16c3d8f5d52174e4854f96b16f34c39d6cb7"},
-    {file = "regex-2021.8.21-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:ac95101736239260189f426b1e361dc1b704513963357dc474beb0f39f5b7759"},
-    {file = "regex-2021.8.21-cp39-cp39-manylinux_2_5_i686.manylinux1_i686.manylinux_2_12_i686.manylinux2010_i686.whl", hash = "sha256:b79dc2b2e313565416c1e62807c7c25c67a6ff0a0f8d83a318df464555b65948"},
-    {file = "regex-2021.8.21-cp39-cp39-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:d8b623fc429a38a881ab2d9a56ef30e8ea20c72a891c193f5ebbddc016e083ee"},
-    {file = "regex-2021.8.21-cp39-cp39-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:8021dee64899f993f4b5cca323aae65aabc01a546ed44356a0965e29d7893c94"},
-    {file = "regex-2021.8.21-cp39-cp39-win32.whl", hash = "sha256:d6ec4ae13760ceda023b2e5ef1f9bc0b21e4b0830458db143794a117fdbdc044"},
-    {file = "regex-2021.8.21-cp39-cp39-win_amd64.whl", hash = "sha256:03840a07a402576b8e3a6261f17eb88abd653ad4e18ec46ef10c9a63f8c99ebd"},
-    {file = "regex-2021.8.21.tar.gz", hash = "sha256:faf08b0341828f6a29b8f7dd94d5cf8cc7c39bfc3e67b78514c54b494b66915a"},
-]
 rfc3986 = [
     {file = "rfc3986-1.5.0-py2.py3-none-any.whl", hash = "sha256:a86d6e1f5b1dc238b218b012df0aa79409667bb209e58da56d0b94704e712a97"},
     {file = "rfc3986-1.5.0.tar.gz", hash = "sha256:270aaf10d87d0d4e095063c65bf3ddbc6ee3d0b226328ce21e036f946e421835"},
diff --git a/pyproject.toml b/pyproject.toml
index 9878ddf6..46fc536f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,7 +18,7 @@ pytest = "^6.2.5"
 pytest-asyncio = "^0.16.0"
 pytest-cov = "^3.0.0"
 mypy = "^0.930"
-black = { version = "^21.11b1", allow-prereleases = true }
+black = { version = "^21.12b0", allow-prereleases = true }
 pre-commit = "^2.16.0"
 unasync-cli = "^0.0.9"