diff --git a/tox.ini b/tox.ini
index f2e1abff..1d418898 100644
--- a/tox.ini
+++ b/tox.ini
@@ -36,7 +36,7 @@ force_single_line = True
 skip_install = true
 deps =
   isort==5.12.0
-  black==23.7.0
+  black==23.9.1
   flake8==6.1.0
   flake8-typing-imports==1.14.0
   docformatter==1.7.5
@@ -55,7 +55,7 @@ commands =
 skip_install = true
 deps =
   isort==5.12.0
-  black==23.7.0
+  black==23.9.1
   flake8==6.1.0
   flake8-typing-imports==1.14.0
   docformatter==1.7.5