diff --git a/csv/cn b/csv/cn
index d79e6b970..1dd970d23 160000
--- a/csv/cn
+++ b/csv/cn
@@ -1 +1 @@
-Subproject commit d79e6b970a2c9d1db391d742617e4d12b0f7bf4b
+Subproject commit 1dd970d23b0fa5f609b9bbc9b90c26013ceabc4c