diff --git a/src/stochtree-cpp b/src/stochtree-cpp
index 44e3be1..596e960 160000
--- a/src/stochtree-cpp
+++ b/src/stochtree-cpp
@@ -1 +1 @@
-Subproject commit 44e3be19ffdef00db3ca5180099bfba5ebbda5c9
+Subproject commit 596e960431918fa1012f877a2a45482fe0a80ea3