diff --git a/package.json b/package.json
index 6881c7f..75d2536 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
   "gypfile": true,
   "name": "shm-cache",
   "description": "[![Build Status](https://travis-ci.org/denghongcai/node-shm-cache.svg)](https://travis-ci.org/denghongcai/node-shm-cache)",
-  "version": "1.3.4",
+  "version": "2.0.0",
   "directories": {
     "test": "test"
   },
@@ -47,5 +47,8 @@
   "bugs": {
     "url": "https://github.com/denghongcai/node-shm-cache/issues"
   },
-  "homepage": "https://github.com/denghongcai/node-shm-cache#readme"
+  "homepage": "https://github.com/denghongcai/node-shm-cache#readme",
+  "engines": {
+    "node" : ">=8"
+  }
 }