diff --git a/ustcthesis b/ustcthesis
index d7f6574..8748832 160000
--- a/ustcthesis
+++ b/ustcthesis
@@ -1 +1 @@
-Subproject commit d7f657496455cc96fc298fa371f34f55237de9a5
+Subproject commit 874883287e5bce8777ca749e095b3d6deaac1310