diff --git a/requirements-dev.txt b/requirements-dev.txt
index 6ef2c08..ced2a64 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,4 +1,4 @@
 -r requirements.txt
-black==23.7.0
+black==23.9.1
 flake8==6.1.0
 pre-commit==3.3.3