diff --git a/pyproject.toml b/pyproject.toml
index 47977f6..3f94401 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -102,7 +102,7 @@ dependencies = [
   "types-requests==2.32.4.20250611",
   "typing-inspection==0.4.1",
   "typing_extensions==4.15.0",
-  "ujson==5.10.0",
+  "ujson==5.12.0",
   "urllib3==2.6.3",
   "uvicorn==0.35.0",
   "zipp==3.23.0",