diff --git a/pyproject.toml b/pyproject.toml
index ce1c495..a24606c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,12 +25,12 @@ dependencies = []
 
 [project.optional-dependencies]
 demo = [
-  "fastapi>=0.115,<0.139",
+  "fastapi>=0.115,<0.140",
   "pydantic>=2.8,<3",
   "uvicorn>=0.30,<1",
 ]
 dev = [
-  "fastapi>=0.115,<0.139",
+  "fastapi>=0.115,<0.140",
   "httpx2>=2,<3",
   "pydantic>=2.8,<3",
   "pytest>=8,<10",