diff --git a/pyproject.toml b/pyproject.toml
index 091171d..b6c38d7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ packages = [{include = "engine"}]
 [tool.poetry.dependencies]
 python = "^3.11"
 fastapi = "^0.135.1"
-uvicorn = {extras = ["standard"], version = "^0.44.0"}
+uvicorn = {extras = ["standard"], version = ">=0.44,<0.52"}
 pydantic = "^2.10.0"
 pydantic-settings = "^2.6.0"
 httpx = "^0.28.0"