diff --git a/pyproject.toml b/pyproject.toml
index d96491132..08f1cc5b2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,7 +2,7 @@
 requires = [
     "pybind11",
     "scikit-build-core[pyproject]>=0.10",
-    "swig",
+    "swig<4.3.0",
     "numpy==1.19.2; python_version == '3.8'",
     "numpy==1.19.5; python_version == '3.9'",
     "numpy==1.21.6; python_version == '3.10'",