diff --git a/requirements_dev.txt b/requirements_dev.txt
index 9ee8642..7ec0d0e 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -3,7 +3,7 @@ bumpversion==0.5.3
 wheel==0.33.6
 watchdog==0.9.0
 flake8==3.7.9
-black==19.10b0
+black==20.8b1
 tox==3.14.2
 coverage==4.5.4
 Sphinx==2.2.2