diff --git a/package.json b/package.json
index bdad86e..7660ad6 100644
--- a/package.json
+++ b/package.json
@@ -14,8 +14,8 @@
   },
   "license": "MIT",
   "engines": {
-    "node": ">= 6",
-    "npm": ">= 4"
+    "node": ">= 4",
+    "npm": ">= 3"
   },
   "main": "bin/docsify",
   "bin": {