diff --git a/src/ext/three-bgu.js b/src/ext/three-bgu.js
new file mode 120000
index 00000000..c920aa9d
--- /dev/null
+++ b/src/ext/three-bgu.js
@@ -0,0 +1 @@
+../../node_modules/three/examples/js/utils/BufferGeometryUtils.js
\ No newline at end of file