diff --git a/ext/libzt b/ext/libzt
index 5874e44..2d83bc2 160000
--- a/ext/libzt
+++ b/ext/libzt
@@ -1 +1 @@
-Subproject commit 5874e442eb0b4fbd1b5ca44b51e39e5258832048
+Subproject commit 2d83bc25f36d791f976b739d5e57881036e13f4e