diff --git a/lib/zsync2 b/lib/zsync2
index 6a01687..c679907 160000
--- a/lib/zsync2
+++ b/lib/zsync2
@@ -1 +1 @@
-Subproject commit 6a016870f3a501fe90c1c0618b5e3c7bc5d08830
+Subproject commit c679907f6bfc11b98f80a3a8900ac6493ebff060