diff --git a/Pipfile b/Pipfile
index dc45e0b1e82e3fbdf66bfae7997b86c61393865f..982e94111e53f445d97d980aa064b960f975f65b 100644
--- a/Pipfile
+++ b/Pipfile
@@ -4,7 +4,7 @@ url = "https://pypi.org/simple"
 verify_ssl = true
 
 [dev-packages]
-black = "*"
+black = "==20.8b1"
 pre-commit = "*"
 pytest = "*"
 pytest-cov = "*"