diff --git a/libpng b/libpng
index 0024abd..68e090e 160000
--- a/libpng
+++ b/libpng
@@ -1 +1 @@
-Subproject commit 0024abd279d3a06435c0309a3f4172eed7c7a19a
+Subproject commit 68e090e7006c52b9822a13242517f976b6e7fe0f