diff --git a/poetry.lock b/poetry.lock
index 43727892..c9f7f10e 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1051,7 +1051,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7"
-content-hash = "52a7c134df6e7118f3520122fc87a495d62632a37a7b03050be5069ba33c6940"
+content-hash = "7d3fe1745ad0a04b0ea958587145859fbf27c647814167522c5700e2c8430dfe"
 
 [metadata.files]
 alabaster = [
diff --git a/pyproject.toml b/pyproject.toml
index 8db16785..399548c4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,10 +27,10 @@ mypy = "^0.910"
 typeguard = "^2.13.0"
 xdoctest = {extras = ["colors"], version = "^0.15.10"}
 sphinx = "^4.3.0"
-sphinx-autobuild = "^2021.3.14"
+sphinx-autobuild = ">=2021.3.14"
 pre-commit = "^2.15.0"
 flake8 = "^4.0.1"
-black = "^21.10b0"
+black = ">=21.10b0"
 flake8-bandit = "^2.1.2"
 flake8-bugbear = "^21.9.2"
 flake8-docstrings = "^1.6.0"