diff --git a/pyproject.toml b/pyproject.toml
index 6c2d338..6fd828a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -35,7 +35,7 @@ dependencies = [
 dev = [
     "pytest>=8.0.0",
     "pytest-cov>=5.0.0",
-    "black==26.1.0",
+    "black==26.3.1",
     "mypy>=1.10.0",
     "ruff>=0.9.0",
     "invoke>=2.0.0",