diff --git a/api/pyproject.toml b/api/pyproject.toml
index 1a31d04..86f1f80 100644
--- a/api/pyproject.toml
+++ b/api/pyproject.toml
@@ -22,7 +22,7 @@ test = [
 dev = [
     "pre-commit==4.3.0",
     "isort==7.0.0",
-    "black==25.9.0",
+    "black==26.1.0",
     "flake8==7.3.0",
 ]