diff --git a/proto b/proto
index 6a66f8b1f..4ab31fc67 160000
--- a/proto
+++ b/proto
@@ -1 +1 @@
-Subproject commit 6a66f8b1f81815e62279ff66dea908112583e6ab
+Subproject commit 4ab31fc67773f4925ab6a9abde9fefbff0fe1a7f