diff --git a/setup.cfg b/setup.cfg
index cfa3e5d92..4af6b7290 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -105,7 +105,7 @@ database_mongo =
 # testing
 test =
 	flake8>=3.8.1
-	black>=19.10b0
+	black==19.10b0
 	coveralls>=2.0.0
 	dialogflow>=0.8.0
 	astroid>=2.4.1