diff --git a/poetry.lock b/poetry.lock
index d85adce..1b9b624 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -61,7 +61,7 @@ pydantic = ">=1.8.1,<2.0.0"
 
 [[package]]
 name = "black"
-version = "21.4b0"
+version = "21.5b0"
 description = "The uncompromising code formatter."
 category = "dev"
 optional = false
@@ -71,7 +71,7 @@ python-versions = ">=3.6.2"
 appdirs = "*"
 click = ">=7.1.2"
 mypy-extensions = ">=0.4.3"
-pathspec = ">=0.6,<1"
+pathspec = ">=0.8.1,<1"
 regex = ">=2020.1.8"
 toml = ">=0.10.1"
 
@@ -816,7 +816,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pyt
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.8"
-content-hash = "f3b9011fa904588443fadfb4238c20ad87ce545f02a2ea216c8a132986f436b3"
+content-hash = "24f85473bc47b18da4ff68678641bca7dc3d5d26e8b0bdb2574e97a2702ae2d8"
 
 [metadata.files]
 appdirs = [
@@ -840,8 +840,8 @@ beet = [
     {file = "beet-0.22.0.tar.gz", hash = "sha256:5c76595dfc7d96528321ddbe12f0baa048cab3473272b1166cd55af5e1cfe55b"},
 ]
 black = [
-    {file = "black-21.4b0-py3-none-any.whl", hash = "sha256:2db7040bbbbaa46247bfcc05c6efdebd7ebe50c1c3ca745ca6e0f6776438c96c"},
-    {file = "black-21.4b0.tar.gz", hash = "sha256:915d916c48646dbe8040d5265cff7111421a60a3dfe7f7e07273176a57c24a34"},
+    {file = "black-21.5b0-py3-none-any.whl", hash = "sha256:0e80435b8a88f383c9149ae89d671eb2095b72344b0fe8a1d61d2ff5110ed173"},
+    {file = "black-21.5b0.tar.gz", hash = "sha256:9dc2042018ca10735366d944c2c12d9cad6dec74a3d5f679d09384ea185d9943"},
 ]
 bleach = [
     {file = "bleach-3.3.0-py2.py3-none-any.whl", hash = "sha256:6123ddc1052673e52bab52cdc955bcb57a015264a1c57d37bea2f6b817af0125"},
diff --git a/pyproject.toml b/pyproject.toml
index 0c2e614..70d1311 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ pynbs = "^0.4.2"
 beet = ">=0.22.0"
 
 [tool.poetry.dev-dependencies]
-black = "^21.4b0"
+black = "^21.5b0"
 isort = "^5.8.0"
 rope = "^0.19.0"
 python-semantic-release = "^7.15.3"