diff --git a/unilm b/unilm
index b5b99a3..ac18c6b 160000
--- a/unilm
+++ b/unilm
@@ -1 +1 @@
-Subproject commit b5b99a36ab8ea83ef64d1efaa307133184243c57
+Subproject commit ac18c6b37c0768fb85ca6167dee840761e2427df