diff --git a/package.json b/package.json
index 4de24b0..ce03f6e 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
     "imagemin-svgo": "5.1.0",
     "loader-utils": "0.2.15",
     "task-queue-async": "1.0.1",
-    "pngjs": "2.3.1",
+    "pngjs": "3.2.0",
     "q": "1.4.1",
     "streamifier": "0.1.1"
   },