diff --git a/pyproject.toml b/pyproject.toml
index 59c1c20b..45c03323 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ version_scheme = "post-release"
 metadata.version.provider = "scikit_build_core.metadata.setuptools_scm"
 
 [build-system]
-requires = ["scikit-build-core >=0.4.3", "nanobind >=1.3.2", "setuptools-scm==8.3.1"]
+requires = ["scikit-build-core >=0.4.3", "nanobind ==1.3.2", "setuptools-scm==8.3.1"]
 build-backend = "scikit_build_core.build"
 
 [project]