diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 5540a059b63..0b1b4127a1b 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -13,7 +13,7 @@ repos:
       - id: isort
   # https://github.com/python/black#version-control-integration
   - repo: https://github.com/psf/black
-    rev: 21.8b0
+    rev: 21.9b0
     hooks:
       - id: black
   - repo: https://github.com/keewis/blackdoc