diff --git a/package.json b/package.json
index a6c321b..a965ba6 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "file-loader": "0.9.0",
     "filesize": "3.3.0",
     "fs-extra": "0.30.0",
-    "gzip-size": "3.0.0",
+    "gzip-size": "5.1.1",
     "html-webpack-plugin": "2.24.0",
     "http-proxy-middleware": "0.17.2",
     "jest": "17.0.2",