diff --git a/package.json b/package.json
index 7913a05..b384917 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "https-proxy-agent": "1.0.0",
     "iconv-lite": "0.4.15",
     "performance-now": "2.0.0",
-    "protobufjs": "5.0.1",
+    "protobufjs": "6.7.3",
     "redis": "^2.6.2",
     "soap": "0.13.0",
     "underscore": "1.8.3",