diff --git a/src/K2 b/src/K2
index 78edc7078..439ba5737 160000
--- a/src/K2
+++ b/src/K2
@@ -1 +1 @@
-Subproject commit 78edc7078c8f379bb470bf6001e6e2003bf7952b
+Subproject commit 439ba5737fa9a991caf8aa6be802d908b20f8cae