diff --git a/async-book b/async-book
index 51f661f..a6aeccd 160000
--- a/async-book
+++ b/async-book
@@ -1 +1 @@
-Subproject commit 51f661fac6959cd53b7b47b10392694386df2420
+Subproject commit a6aeccd9a9a2f519300259b8ea193a0e288f818d