diff --git a/.github/workflows/constraints.txt b/.github/workflows/constraints.txt
index debe439..09115fe 100644
--- a/.github/workflows/constraints.txt
+++ b/.github/workflows/constraints.txt
@@ -1,5 +1,5 @@
 pip==21.3.1
 pre-commit==2.16.0
-black==21.9b0
+black==21.12b0
 flake8==4.0.1
 reorder-python-imports==2.6.0