diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index ae4197a4..f462de5e 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
 - repo: https://github.com/psf/black
-  rev: 21.8b0
+  rev: 21.9b0
   hooks:
     - id: black
       language_version: python3