diff --git a/ext/libzt b/ext/libzt
index 8d21a26..5874e44 160000
--- a/ext/libzt
+++ b/ext/libzt
@@ -1 +1 @@
-Subproject commit 8d21a265cc23dd6e6e4d2c2ad068e978f110f8e3
+Subproject commit 5874e442eb0b4fbd1b5ca44b51e39e5258832048