diff --git a/abc b/abc
index cd53fd793..577bfe924 160000
--- a/abc
+++ b/abc
@@ -1 +1 @@
-Subproject commit cd53fd7938451b4951f084192a6bf2228382c634
+Subproject commit 577bfe9245c1989aece64e13ae10d43f8cd8cec8