diff --git a/poetry.lock b/poetry.lock
index 2706da6..abbd4cb 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -124,7 +124,7 @@ stevedore = ">=1.20.0"
 
 [[package]]
 name = "black"
-version = "21.9b0"
+version = "21.10b0"
 description = "The uncompromising code formatter."
 category = "dev"
 optional = false
@@ -144,9 +144,9 @@ 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]]
@@ -941,7 +941,7 @@ multidict = ">=4.0"
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.8"
-content-hash = "33ae6c8e48acdbf4fc47ffb3ac139697a7a54eb45a7a541662f666359b486968"
+content-hash = "5027a072d86355bfa87e7bd2f4da90fa5d73e0dd09cde92178c18dc8fd496d8b"
 
 [metadata.files]
 aiohttp = [
@@ -1055,8 +1055,8 @@ bandit = [
     {file = "bandit-1.7.0.tar.gz", hash = "sha256:8a4c7415254d75df8ff3c3b15cfe9042ecee628a1e40b44c15a98890fbfc2608"},
 ]
 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"},
 ]
 blacken-docs = [
     {file = "blacken_docs-1.11.0-py2.py3-none-any.whl", hash = "sha256:9fcd6c11fd6e128fa25b0bbb30e6a054bf81e818ffdee4c6c2281a77e75696f0"},
diff --git a/pyproject.toml b/pyproject.toml
index 8ba32b3..31049ec 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,7 +31,7 @@ yarl = ">=1.6.0"
 
 [tool.poetry.dev-dependencies]
 aresponses = "^2.1.4"
-black = "^21.9b0"
+black = "^21.10b0"
 blacken-docs = "^1.11.0"
 coverage = {version = "^6.1", extras = ["toml"]}
 flake8 = "^4.0.1"