diff --git a/libpng b/libpng
index c1cc0f3..3042f74 160000
--- a/libpng
+++ b/libpng
@@ -1 +1 @@
-Subproject commit c1cc0f3f4c3d4abd11ca68c59446a29ff6f95003
+Subproject commit 3042f74de0e8a24797e755bd6dba06091ec75170