diff --git a/lib/chck b/lib/chck
index 252fa59..ec1c981 160000
--- a/lib/chck
+++ b/lib/chck
@@ -1 +1 @@
-Subproject commit 252fa59d552036355d621bb6c7c29cc04790d291
+Subproject commit ec1c981aa9e5a567dd437c5c174840ace4da2040