diff --git a/pyproject.toml b/pyproject.toml
index 030c073..3b7f46c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,7 +26,7 @@ worker=[
 
 tooling = [
   # code formatting
-  "black ==23.7.0",
+  "black ==23.9.1",
   # linting
   "ruff ==0.0.292",
   # tests