diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index d896fd5c..94330e6e 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -12,7 +12,7 @@ repos:
     -   id: end-of-file-fixer
     -   id: trailing-whitespace
 -   repo: https://github.com/psf/black
-    rev: 21.8b0
+    rev: 21.9b0
     hooks:
     -   id: black
 -   repo: https://github.com/PyCQA/flake8