diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 544e531..7abdafa 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,10 +1,10 @@
 repos:
 -   repo: https://github.com/psf/black
-    rev: stable
+    rev: 20.8b1
     hooks:
     - id: black
       language_version: python3
 -   repo: https://gitlab.com/pycqa/flake8
-    rev: 3.8.1
+    rev: 3.8.3
     hooks:
     - id: flake8