diff --git a/lib/stan_math b/lib/stan_math
index 0dd2068403d..19f66fc4767 160000
--- a/lib/stan_math
+++ b/lib/stan_math
@@ -1 +1 @@
-Subproject commit 0dd2068403db9ae2b8799e4b5bccde22b3d6ddc3
+Subproject commit 19f66fc47678372adc974301b29f1a781f1c5c52