diff --git a/pyproject.toml b/pyproject.toml
index 9e90bd246..83d7e4c4e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -287,7 +287,7 @@ dev = [
     "Sphinx-Substitution-Extensions==2022.2.16",
     "Sphinx==7.2.6",
     "VWS-Test-Fixtures==2023.3.5",
-    "black==23.9.1",
+    "black==23.10.0",
     "check-manifest==0.49",
     "dirty-equals==0.6.0",
     # We pin to an old doc8 to avoid version conflicts with sphinx_toolbox.