diff --git a/lib/stan_math b/lib/stan_math
index 9b1f08be7e..67d3c88fe2 160000
--- a/lib/stan_math
+++ b/lib/stan_math
@@ -1 +1 @@
-Subproject commit 9b1f08be7e76c6468fc2fcf2f75d641a619ae349
+Subproject commit 67d3c88fe2f1bb78a018ccf63840562c7b38fdd1