diff --git a/pyproject.toml b/pyproject.toml
index f5687bd5..52dc7b22 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,7 +30,7 @@ dependencies    = [
 [project.optional-dependencies]
 requirements = [
     "aiohttp==3.13.5",
-    "orjson==3.11.8",
+    "orjson==3.11.9",
     "packaging==26.2",
     "xmltodict==1.0.4",
 ]