diff --git a/requirements_lint.txt b/requirements_lint.txt
index 3bfa91a..8feda83 100644
--- a/requirements_lint.txt
+++ b/requirements_lint.txt
@@ -1,4 +1,4 @@
-black==21.7b0
+black==21.12b0
 flake8==3.9.2
 mypy==0.910
 pydocstyle==6.1.1