diff --git a/package.json b/package.json
index 1b058d5777..16593a2942 100644
--- a/package.json
+++ b/package.json
@@ -96,7 +96,7 @@
     "mock-socket": "^9.0.3",
     "nightwatch": "^1.4.3",
     "open": "^7.3.0",
-    "pngjs": "^5.0.0",
+    "pngjs": "^6.0.0",
     "pre-commit": "^1.2.2",
     "request": "^2.88.0",
     "selenium-server": "3.141.59",