diff --git a/pyproject.toml b/pyproject.toml
index 3e1bf6b..2f30d97 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -42,7 +42,7 @@ dev = [
     "pytest-asyncio>=0.21.0",
     "pytest-cov>=4.1.0",
     "httpx>=0.25.0",
-    "black>=25.9.0",
+    "black>=26.5.1",
     "isort>=6.0.1",
     "flake8>=7.3.0",
     "mypy>=1.18.2",