diff --git a/poetry.lock b/poetry.lock
index 0fa2116d..9b136419 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -104,7 +104,7 @@ stevedore = ">=1.20.0"
 
 [[package]]
 name = "black"
-version = "21.5b2"
+version = "21.6b0"
 description = "The uncompromising code formatter."
 category = "dev"
 optional = false
@@ -888,7 +888,7 @@ multidict = ">=4.0"
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.8"
-content-hash = "91f8ba3c8b9b6cad9d8d795f8ff67b60468c9d06085e76b97ca696075ea00059"
+content-hash = "1230745000f77daae0e3e9412ae2acfd55e3da8c85889ebf14c7a223f2d1a553"
 
 [metadata.files]
 aiohttp = [
@@ -963,8 +963,8 @@ bandit = [
     {file = "bandit-1.7.0.tar.gz", hash = "sha256:8a4c7415254d75df8ff3c3b15cfe9042ecee628a1e40b44c15a98890fbfc2608"},
 ]
 black = [
-    {file = "black-21.5b2-py3-none-any.whl", hash = "sha256:e5cf21ebdffc7a9b29d73912b6a6a9a4df4ce70220d523c21647da2eae0751ef"},
-    {file = "black-21.5b2.tar.gz", hash = "sha256:1fc0e0a2c8ae7d269dfcf0c60a89afa299664f3e811395d40b1922dff8f854b5"},
+    {file = "black-21.6b0-py3-none-any.whl", hash = "sha256:dfb8c5a069012b2ab1e972e7b908f5fb42b6bbabcba0a788b86dc05067c7d9c7"},
+    {file = "black-21.6b0.tar.gz", hash = "sha256:dc132348a88d103016726fe360cb9ede02cecf99b76e3660ce6c596be132ce04"},
 ]
 blacken-docs = [
     {file = "blacken_docs-1.10.0-py2.py3-none-any.whl", hash = "sha256:149197a0b17e83121fc10aca9eda1417728fdccebde930a6722f97d87ed30f4b"},
diff --git a/pyproject.toml b/pyproject.toml
index 143f9dd8..90d14a49 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,7 +31,7 @@ yarl = ">=1.6.0"
 
 [tool.poetry.dev-dependencies]
 aresponses = "^2.1.4"
-black = "^21.5b2"
+black = "^21.6b0"
 blacken-docs = "^1.10.0"
 coverage = {version = "^5.5", extras = ["toml"]}
 flake8 = "^3.9.2"