diff --git a/pyproject.toml b/pyproject.toml
index aee59ff0c..7f820b541 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools"]
+requires = ["setuptools", "tomllib"]
 build-backend = "setuptools.build_meta"
 
 [tool.cibuildwheel]