diff --git a/package.json b/package.json
index a0f79ea..3e015a9 100644
--- a/package.json
+++ b/package.json
@@ -114,7 +114,7 @@
   "dependencies": {
     "express": "^4.16.4",
     "helmet": "^3.22.1",
-    "node-zopfli-es": "^1.0.5",
+    "node-zopfli-es": "^2.0.5",
     "shrink-ray-current": "^4.0.0"
   }
 }