diff --git a/requirements-dev.txt b/requirements-dev.txt
index 5b99e9c..4ada9ae 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,4 +1,4 @@
-black==20.8b1
+black==21.4b2
 darglint==1.8.0
 isort==5.8.0
 mypy==0.812