diff --git a/tools/upgrade-vendor.sh b/tools/upgrade-vendor.sh
new file mode 100755
index 000000000..8b577b9c8
--- /dev/null
+++ b/tools/upgrade-vendor.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+
+# Upgrade third-party deps under third-party/bazel.
+bazel run //third-party:vendor