diff --git a/pyproject.toml b/pyproject.toml
index a85b68e..d2e9770 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -62,7 +62,7 @@ seaborn = "^0.11.0"
 darglint = "^1.4.1"
 isort = {extras = ["pyproject"], version = "^4.3.21"}
 pyupgrade = "^2.6.1"
-black = "^19.10b0"
+black = "^21.12b0"
 mypy = "^0.780"
 bandit = "^1.6.2"
 safety = "^1.9.0"