diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 73294ae6..6c8e42ff 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
 -   repo: https://github.com/ambv/black
-    rev: stable
+    rev: 20.8b1
     hooks:
     - id: black
       language_version: python3.7