diff --git a/requirements.txt b/requirements.txt
index 92f8108..05bbb33 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 -e .
-black==21.9b0; implementation_name=="cpython"
+black==21.10b0; implementation_name=="cpython"
 docutils==0.18
 flake8==4.0.1
 isort==5.9.3