diff --git a/extlib/libpng b/extlib/libpng
index 2b667e49..5b6a6f91 160000
--- a/extlib/libpng
+++ b/extlib/libpng
@@ -1 +1 @@
-Subproject commit 2b667e49232dd36aa7ea3a7382f265fd7f97d2cd
+Subproject commit 5b6a6f914b734f38d3ea96d70bfc67acd8b47414