diff --git a/package.json b/package.json
index 3e2057e..c85fe33 100644
--- a/package.json
+++ b/package.json
@@ -58,7 +58,7 @@
     "supertest": "^3.0.0"
   },
   "engines": {
-    "node": ">= 6.0.0"
+    "node": "^4.8.4 || ^6.10.1 || ^7.10.1 || >= 8.1.4"
   },
   "files": [
     "lib"