diff --git a/pyproject.toml b/pyproject.toml
index 85949a6c..eaed9d3b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,7 +45,7 @@ publish = [
     "twine == 4.0.2",
 ]
 docs = [
-    "black==23.7.0",
+    "black==23.9.1",
     "mkdocs==1.5.3",
     "mkdocs-material==9.4.2",
     "mkdocstrings[python]==0.23.0",