diff --git a/topic0 b/topic0
index b30f9d4..52559d5 160000
--- a/topic0
+++ b/topic0
@@ -1 +1 @@
-Subproject commit b30f9d442081a231641c5cef196be79650306e55
+Subproject commit 52559d5690d491f8191a2d3fdb3c037516adc68f