diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 1c4400d..d3c90e4 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
     - repo: https://github.com/python/black
-      rev: stable
+      rev: 20.8b1
       hooks:
       - id: black
         language_version: python3.6