diff --git a/pyproject.toml b/pyproject.toml
index 7de7e37c3..7aca0ef7e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,7 +39,7 @@ Issues = "https://github.com/Libensemble/libensemble/issues"
 
 [build-system]
 build-backend = "setuptools.build_meta"
-requires = ["setuptools", "wheel", "pip>=24.3.1,<26", "setuptools>=75.1.0,<77", ]
+requires = ["setuptools", "wheel", "pip>=24.3.1,<26", "setuptools>=75.1.0,<79", ]
 
 [tool.setuptools.packages.find]
 where = ["."]