diff --git a/pyproject.toml b/pyproject.toml
index 840cddc9..0b158ece 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -59,7 +59,7 @@ test = [
     "pytz ~= 2023.3",
     "types-pytz ~= 2023.3.0.0",
     "darglint ~= 1.8.1",
-    "uvicorn ~= 0.17.0",
+    "uvicorn >= 0.17,< 0.28",
     "fastapi >=0.104.0",
     "requests ~= 2.24",
     "typer ~= 0.4.1",