diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 4871769e..c99ad5de 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -31,7 +31,7 @@ repos:
   - id: isort
 
 - repo: https://github.com/psf/black
-  rev: 21.8b0
+  rev: 21.9b0
   hooks:
   - id: black