diff --git a/external/libpng b/external/libpng
index a37d483..12222e6 160000
--- a/external/libpng
+++ b/external/libpng
@@ -1 +1 @@
-Subproject commit a37d4836519517bdce6cb9d956092321eca3e73b
+Subproject commit 12222e6fbdc90523be77633ed430144cfee22772