diff --git a/StanHeaders/inst/include/upstream b/StanHeaders/inst/include/upstream
index b667579da..578657e91 160000
--- a/StanHeaders/inst/include/upstream
+++ b/StanHeaders/inst/include/upstream
@@ -1 +1 @@
-Subproject commit b667579daa3524ed2a1891d2b32f6ce89f0015be
+Subproject commit 578657e9147ad4eba7a2ad23baf2406e5b07eb97