diff --git a/libs/optional b/libs/optional
index 324272fc0e..29dfc173c6 160000
--- a/libs/optional
+++ b/libs/optional
@@ -1 +1 @@
-Subproject commit 324272fc0e5dd64cc018339180090a6bba57a6a8
+Subproject commit 29dfc173c675371c0e5efd43a5ea9a740aa3c89f