diff --git a/requirements_dev.txt b/requirements_dev.txt
index bd1d55f..d6b6a1a 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,6 +1,6 @@
 pip==21.1
 wheel==0.36.2
-black==21.4b1
+black==21.5b0
 flake8==3.9.1
 numpy==1.20.2
 torch==1.8.1