diff --git a/requirements-dev.txt b/requirements-dev.txt
index 06b93c6..97d0074 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -5,6 +5,6 @@ mypy==1.18.1
 pydocstyle==6.1.1
 flake8==7.3.0
 pylint==3.3.8
-black==25.1.0
+black==25.9.0
 pydantic==2.11.9
 pydantic-settings==2.10.1