diff --git a/python/pyproject.toml b/python/pyproject.toml
index 30a58d401..97d952f03 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -60,3 +60,5 @@ include = [
     { path = "Cargo.lock", format = "sdist" }
 ]
 exclude = [".github/**", "ci/**", ".asf.yaml"]
+# Require Cargo.lock is up to date
+locked = true