diff --git a/pyproject.toml b/pyproject.toml
index 6f13c370..7539a7e4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["cython<3", "oldest-supported-numpy", "setuptools", "swig", "wheel"]
+requires = ["cython<3", "oldest-supported-numpy", "setuptools", "swig<4", "wheel"]
 build-backend = "setuptools.build_meta"
 
 [tool.cibuildwheel]