diff --git a/python-flask/pyproject.toml b/python-flask/pyproject.toml
index 38560ea..746cad1 100644
--- a/python-flask/pyproject.toml
+++ b/python-flask/pyproject.toml
@@ -8,7 +8,7 @@ dependencies = [
   "crate",
   "flask<3",
   "flask-restful<1",
-  "flask-cors<4",
+  "flask-cors<5",
   "itsdangerous<3",
   "jinja2<4",
   "markupsafe<3",