diff --git a/external/libpng b/external/libpng
index a37d483..59fa76e 160000
--- a/external/libpng
+++ b/external/libpng
@@ -1 +1 @@
-Subproject commit a37d4836519517bdce6cb9d956092321eca3e73b
+Subproject commit 59fa76e1647422d63c9f01a9d7c66b5a540ae69d