diff --git a/StanHeaders/inst/include/upstream b/StanHeaders/inst/include/upstream
index 3c956576a..7e76f26f3 160000
--- a/StanHeaders/inst/include/upstream
+++ b/StanHeaders/inst/include/upstream
@@ -1 +1 @@
-Subproject commit 3c956576aad925051c2a4d6203757cbbb43fa0fd
+Subproject commit 7e76f26f347fcdcb71fcc28d23a527a220c6ce56