diff --git a/topic0 b/topic0
index 32b8c07..f6a21e2 160000
--- a/topic0
+++ b/topic0
@@ -1 +1 @@
-Subproject commit 32b8c07fdb68d8dda85a9f7929f42cadb236b5c5
+Subproject commit f6a21e2e0036217a33f0a9c8b4aef26e47a02b7d