diff --git a/pyproject.toml b/pyproject.toml
index fb068b2653..b839987886 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["flit_core >=3.2,<3.11"] # THIS SHOULD BE REVERTED TO '["flit_core >=3.2,<4"]'
+requires = ["flit_core >=3.2,<3.13"] # THIS SHOULD BE REVERTED TO '["flit_core >=3.2,<4"]'
 build-backend = "flit_core.buildapi"