diff --git a/third_party/MegRay b/third_party/MegRay
index 2ecef6f2..678ecceb 160000
--- a/third_party/MegRay
+++ b/third_party/MegRay
@@ -1 +1 @@
-Subproject commit 2ecef6f2c5802886eb0c7de509b9875c0dd9b28e
+Subproject commit 678ecceb5b4b40933dc4be512a155030b182351c