diff --git a/requirements-dev.txt b/requirements-dev.txt
index be7309a..436f283 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,4 +1,4 @@
-black==23.7.0
+black==23.9.1
 flake8==6.1.0
 flake8-black==0.3.6
 flake8-comprehensions==3.14.0