diff --git a/pyproject.toml b/pyproject.toml
index 86bab99a..0cb10a58 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -83,7 +83,7 @@ Chat = "https://discord.gg/pallets"
 flask = "flask.cli:main"
 
 [build-system]
-requires = ["flit_core<4"]
+requires = ["flit_core>=3.11,<4"]
 build-backend = "flit_core.buildapi"
 
 [tool.flit.module]