diff --git a/viperserver b/viperserver
index a339b94c3..d47423476 160000
--- a/viperserver
+++ b/viperserver
@@ -1 +1 @@
-Subproject commit a339b94c3680fc0588528bfda04598c8826a701b
+Subproject commit d474234763ea607219e0a339dbf494517af6b9e6