diff --git a/pyproject.toml b/pyproject.toml
index 375040e..92dfdfe 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,7 +21,7 @@ dependencies = ["typing_extensions>=4.0; python_version < '3.10'"]
 [project.optional-dependencies]
 dev = [
     "attribution==1.6.2",
-    "black==24.1.1",
+    "black==24.4.2",
     "coverage==7.4.1",
     "flake8==7.0.0",
     "flit==3.9.0",