diff --git a/src/smithlab_cpp b/src/smithlab_cpp
index 8537bb3..6040377 160000
--- a/src/smithlab_cpp
+++ b/src/smithlab_cpp
@@ -1 +1 @@
-Subproject commit 8537bb392c0799bd2df0feaa27e6350337e488d1
+Subproject commit 6040377011bde976b02d2fd3a859b9c9ce4ce69a