diff --git a/submodules/Postbox b/submodules/Postbox
index 862c00ac19..21c72c1e16 160000
--- a/submodules/Postbox
+++ b/submodules/Postbox
@@ -1 +1 @@
-Subproject commit 862c00ac199c896717d6ac63f51093ffcd5d2d08
+Subproject commit 21c72c1e16ddfac65d0a80bb356c7ce278090c51