diff --git a/src/K2 b/src/K2
index 2bb760e95..3af81b2ba 160000
--- a/src/K2
+++ b/src/K2
@@ -1 +1 @@
-Subproject commit 2bb760e95db2984edbc89810ae85abd845d8e72d
+Subproject commit 3af81b2ba647908fd06c4342df52ab39b71312b0