diff --git a/libs/iostreams b/libs/iostreams
index 055c1cc759..7c21f2d866 160000
--- a/libs/iostreams
+++ b/libs/iostreams
@@ -1 +1 @@
-Subproject commit 055c1cc7599e8e30d4339994617d4ee36f3cdc3d
+Subproject commit 7c21f2d8663b62bb3257bfcdd326915bc928c48b