diff --git a/pyproject.toml b/pyproject.toml
index 3ccc954..681861e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,7 @@ repository = "https://github.com/mnets/bliss_bind"
 bug-tracker = "https://github.com/mnets/bliss_bind/issues"
 
 [build-system]
-requires = ["scikit-build-core >=0.8.0", "nanobind >=1.8.0"]
+requires = ["scikit-build-core >=0.8.0", "nanobind ==1.9.2"]
 build-backend = "scikit_build_core.build"