diff --git a/pyproject.toml b/pyproject.toml
index d7558ca..b75686e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,7 +37,7 @@ dependencies = [
 [project.optional-dependencies]
 test = [
     "bandit[toml]==1.7.5",
-    "black==23.9.1",
+    "black==23.10.0",
     "check-manifest==0.49",
     "flake8-bugbear==23.5.9",
     "flake8-docstrings",