diff --git a/pyproject.toml b/pyproject.toml
index 174cf0e..93b7d25 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -42,7 +42,7 @@ dependencies = [
 
 [project.optional-dependencies]
 dev = [
-    "black==23.7.0",
+    "black==23.10.1",
     "coverage==7.3.0",
     "flake8==6.1.0",
     "mccabe<=0.7.0",