diff --git a/src/png b/src/png
index a016282f47..772e393c7e 160000
--- a/src/png
+++ b/src/png
@@ -1 +1 @@
-Subproject commit a016282f4752b1177da5722efda7e3045a4ecdf1
+Subproject commit 772e393c7eb95f0424d2d895abd5f8ad0131f500