diff --git a/poetry.lock b/poetry.lock
index b813e5f3..7687cfe2 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -22,7 +22,7 @@ tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>
 
 [[package]]
 name = "black"
-version = "21.9b0"
+version = "21.10b0"
 description = "The uncompromising code formatter."
 category = "dev"
 optional = false
@@ -42,9 +42,9 @@ typing-extensions = [
 
 [package.extras]
 colorama = ["colorama (>=0.4.3)"]
-d = ["aiohttp (>=3.6.0)", "aiohttp-cors (>=0.4.0)"]
+d = ["aiohttp (>=3.7.4)"]
 jupyter = ["ipython (>=7.8.0)", "tokenize-rt (>=3.2.0)"]
-python2 = ["typed-ast (>=1.4.2)"]
+python2 = ["typed-ast (>=1.4.3)"]
 uvloop = ["uvloop (>=0.15.2)"]
 
 [[package]]
@@ -556,7 +556,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.9"
-content-hash = "fd64a4ae0d1da6d8057d3f85be7abd3b554bda244b095981c085bac2cc9f1c27"
+content-hash = "e721e659277814bb551d78a584f7f8de16661628070c61246a907c530848e686"
 
 [metadata.files]
 atomicwrites = [
@@ -568,8 +568,8 @@ attrs = [
     {file = "attrs-20.3.0.tar.gz", hash = "sha256:832aa3cde19744e49938b91fea06d69ecb9e649c93ba974535d08ad92164f700"},
 ]
 black = [
-    {file = "black-21.9b0-py3-none-any.whl", hash = "sha256:380f1b5da05e5a1429225676655dddb96f5ae8c75bdf91e53d798871b902a115"},
-    {file = "black-21.9b0.tar.gz", hash = "sha256:7de4cfc7eb6b710de325712d40125689101d21d25283eed7e9998722cf10eb91"},
+    {file = "black-21.10b0-py3-none-any.whl", hash = "sha256:6eb7448da9143ee65b856a5f3676b7dda98ad9abe0f87fce8c59291f15e82a5b"},
+    {file = "black-21.10b0.tar.gz", hash = "sha256:a9952229092e325fe5f3dae56d81f639b23f7131eb840781947e4b2886030f33"},
 ]
 click = [
     {file = "click-8.0.1-py3-none-any.whl", hash = "sha256:fba402a4a47334742d782209a7c79bc448911afe1149d07bdabdf480b3e2f4b6"},
diff --git a/pyproject.toml b/pyproject.toml
index 51f75702..7d019a39 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,7 +21,7 @@ mkdocs = "^1.2.3"
 mkdocs-material = "^7.3.6"
 
 [tool.poetry.dev-dependencies]
-black = "^21.9b0"
+black = "^21.10b0"
 codespell = "^2.1.0"
 flake8 = "^4.0.1"
 pep8-naming = "^0.12.1"