diff --git a/poetry.lock b/poetry.lock
index c217b98..5fcd3b6 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -68,7 +68,7 @@ tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>
 
 [[package]]
 name = "black"
-version = "21.5b0"
+version = "21.7b0"
 description = "The uncompromising code formatter."
 category = "dev"
 optional = false
@@ -80,14 +80,15 @@ click = ">=7.1.2"
 mypy-extensions = ">=0.4.3"
 pathspec = ">=0.8.1,<1"
 regex = ">=2020.1.8"
-toml = ">=0.10.1"
+tomli = ">=0.2.6,<2.0.0"
 typed-ast = {version = ">=1.4.2", markers = "python_version < \"3.8\""}
 typing-extensions = {version = ">=3.7.4", markers = "python_version < \"3.8\""}
 
 [package.extras]
 colorama = ["colorama (>=0.4.3)"]
-d = ["aiohttp (>=3.3.2)", "aiohttp-cors"]
+d = ["aiohttp (>=3.6.0)", "aiohttp-cors (>=0.4.0)"]
 python2 = ["typed-ast (>=1.4.2)"]
+uvloop = ["uvloop (>=0.15.2)"]
 
 [[package]]
 name = "cafeteria"
@@ -424,6 +425,14 @@ category = "dev"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
 
+[[package]]
+name = "tomli"
+version = "1.0.4"
+description = "A lil' TOML parser"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
 [[package]]
 name = "tox"
 version = "3.23.1"
@@ -510,7 +519,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pyt
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7"
-content-hash = "26fee507bafce2854af5ef0d5a4173482409dfb82be4c19ac8c190e31a0e5d9d"
+content-hash = "25d99f59e16d7cb94ec9fd5a99e1055b2141e5dbd2519336900b0fc3420143ee"
 
 [metadata.files]
 aiohttp = [
@@ -573,8 +582,8 @@ attrs = [
     {file = "attrs-21.2.0.tar.gz", hash = "sha256:ef6aaac3ca6cd92904cdd0d83f629a15f18053ec84e6432106f7a4d04ae4f5fb"},
 ]
 black = [
-    {file = "black-21.5b0-py3-none-any.whl", hash = "sha256:0e80435b8a88f383c9149ae89d671eb2095b72344b0fe8a1d61d2ff5110ed173"},
-    {file = "black-21.5b0.tar.gz", hash = "sha256:9dc2042018ca10735366d944c2c12d9cad6dec74a3d5f679d09384ea185d9943"},
+    {file = "black-21.7b0-py3-none-any.whl", hash = "sha256:1c7aa6ada8ee864db745b22790a32f94b2795c253a75d6d9b5e439ff10d23116"},
+    {file = "black-21.7b0.tar.gz", hash = "sha256:c8373c6491de9362e39271630b65b964607bc5c79c83783547d76c839b3aa219"},
 ]
 cafeteria = [
     {file = "cafeteria-0.20.0-py3-none-any.whl", hash = "sha256:f519c95bfdc4cc777f1e4e507529e7a7b13e1d8ceaa0024c4b6ec054535f297e"},
@@ -858,6 +867,10 @@ 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-1.0.4-py3-none-any.whl", hash = "sha256:0713b16ff91df8638a6a694e295c8159ab35ba93e3424a626dd5226d386057be"},
+    {file = "tomli-1.0.4.tar.gz", hash = "sha256:be670d0d8d7570fd0ea0113bd7bb1ba3ac6706b4de062cc4c952769355c9c268"},
+]
 tox = [
     {file = "tox-3.23.1-py2.py3-none-any.whl", hash = "sha256:b0b5818049a1c1997599d42012a637a33f24c62ab8187223fdd318fa8522637b"},
     {file = "tox-3.23.1.tar.gz", hash = "sha256:307a81ddb82bd463971a273f33e9533a24ed22185f27db8ce3386bff27d324e3"},
diff --git a/pyproject.toml b/pyproject.toml
index 503cd2d..3499534 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ pycrypto = "^2.6"
 pre-commit = "^2.7"
 flake8 = "^3.8"
 coverage = {version = "^5.2", extras = ["toml"]}
-black = "^21.5b0"
+black = "^21.7b0"
 tox = "^3.20"
 pytest = "^6.0"
 aioresponses = "^0.7"