diff --git a/src/K2 b/src/K2
index 33fd34905..3191a609a 160000
--- a/src/K2
+++ b/src/K2
@@ -1 +1 @@
-Subproject commit 33fd3490549d452f4a0c1a1c5917fbae74d3d1a3
+Subproject commit 3191a609afbe97e5fa370eec48ba7d2aea005b7e