diff --git a/external/libpng b/external/libpng
index a37d483..763c77e 160000
--- a/external/libpng
+++ b/external/libpng
@@ -1 +1 @@
-Subproject commit a37d4836519517bdce6cb9d956092321eca3e73b
+Subproject commit 763c77e628e2c78b4c422bb7e26327d28ee54ad4