diff --git a/poetry.lock b/poetry.lock
index 161629df..dfca19cd 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 = "21.11b0"
+version = "21.11b1"
 description = "The uncompromising code formatter."
 category = "dev"
 optional = false
@@ -33,7 +33,7 @@ click = ">=7.1.2"
 mypy-extensions = ">=0.4.3"
 pathspec = ">=0.9.0,<1"
 platformdirs = ">=2"
-regex = ">=2020.1.8"
+regex = ">=2021.4.4"
 tomli = ">=0.2.6,<2.0.0"
 typing-extensions = [
     {version = ">=3.10.0.0", markers = "python_version < \"3.10\""},
@@ -276,7 +276,7 @@ python-versions = "*"
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.9"
-content-hash = "a054f5eca00f1645d0953d99093412a55353ed6102f5f60f042acde53432f89e"
+content-hash = "c7a7c55ca12e0436cefcfe51044c40aef21a1b438f2f48ca336f1f39cea6648e"
 
 [metadata.files]
 atomicwrites = [
@@ -288,8 +288,8 @@ attrs = [
     {file = "attrs-21.2.0.tar.gz", hash = "sha256:ef6aaac3ca6cd92904cdd0d83f629a15f18053ec84e6432106f7a4d04ae4f5fb"},
 ]
 black = [
-    {file = "black-21.11b0-py3-none-any.whl", hash = "sha256:0b1f66cbfadcd332ceeaeecf6373d9991d451868d2e2219ad0ac1213fb701117"},
-    {file = "black-21.11b0.tar.gz", hash = "sha256:83f3852301c8dcb229e9c444dd79f573c8d31c7c2dad9bbaaa94c808630e32aa"},
+    {file = "black-21.11b1-py3-none-any.whl", hash = "sha256:802c6c30b637b28645b7fde282ed2569c0cd777dbe493a41b6a03c1d903f99ac"},
+    {file = "black-21.11b1.tar.gz", hash = "sha256:a042adbb18b3262faad5aff4e834ff186bb893f95ba3a8013f09de1e5569def2"},
 ]
 click = [
     {file = "click-8.0.1-py3-none-any.whl", hash = "sha256:fba402a4a47334742d782209a7c79bc448911afe1149d07bdabdf480b3e2f4b6"},
diff --git a/pyproject.toml b/pyproject.toml
index c58a9541..704a8cff 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,7 +11,7 @@ authors = ["Arduino <info@arduino.cc>"]
 python = "^3.9"
 
 [tool.poetry.dev-dependencies]
-black = "^21.11b0"
+black = "^21.11b1"
 codespell = "^2.1.0"
 flake8 = "^4.0.1"
 invoke = "^1.6.0"