diff --git a/pyproject.toml b/pyproject.toml
index 76c1dd6..67d5cf6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -61,9 +61,9 @@ dev-flake8 = [
   "pydoclint == 0.10.0",
   "pydocstyle == 6.3.0",
 ]
-dev-formatting = ["black == 26.5.1", "isort == 9.0.2"]
+dev-formatting = ["black == 26.10.1", "isort == 9.0.2"]
 dev-mkdocs = [
-  "black == 26.5.1",
+  "black == 26.10.1",
   "griffe-warnings-deprecated == 1.1.2",
   "Markdown==3.11.2",
   "mike == 2.2.0",