diff --git a/pyproject.toml b/pyproject.toml
index f00e778..f856481 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,4 +1,4 @@
 [build-system]
-requires = ["setuptools", "wheel", "babel>2.8"]
+requires = ["setuptools", "wheel", "babel>2.8", "importlib_metadata"]
 build-backend = "setuptools.build_meta"