diff --git a/lib/chck b/lib/chck
index 72dc466..56f2a99 160000
--- a/lib/chck
+++ b/lib/chck
@@ -1 +1 @@
-Subproject commit 72dc4664a5e695e53e4af48fff3a36db0f67c0e2
+Subproject commit 56f2a9931ec0daf4ffab89791a2da75791159555