diff --git a/lib/ntk b/lib/ntk
index b2b1ead..664ca2a 160000
--- a/lib/ntk
+++ b/lib/ntk
@@ -1 +1 @@
-Subproject commit b2b1eadf76ecbb5f2aa4dac9d390566cb056f409
+Subproject commit 664ca2afab82d85ad4e975c7dea1c29ff5d30e7e