diff --git a/pyproject.toml b/pyproject.toml
index 2849be5..5f31e59 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ dependencies = [
 [project.optional-dependencies]
 dev = [
     "attribution==1.8.0",
-    "black==25.1.0",
+    "black==25.9.0",
     "build>=1.2",
     "coverage[toml]==7.8.0",
     "flake8==7.2.0",