diff --git a/pyproject.toml b/pyproject.toml
index 0f067eb57..6f0b0669e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,6 +31,7 @@ authors = [
     { name = "Jiwei Liu", email = "jiweil@nvidia.com" },
     { name = "Sarah Yurick", email = "syurick@nvidia.com" },
 ]
+license = "Apache 2.0"
 classifiers = [
     "Development Status :: 3 - Alpha",
     "Programming Language :: Python :: 3",