diff --git a/.gitignore b/.gitignore
index a39b4e1..099c4d9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@ cov
 atest.js
 notes
 primus-proxy.js
+tes.js
diff --git a/package.json b/package.json
index 9968b65..0f556b1 100644
--- a/package.json
+++ b/package.json
@@ -24,5 +24,9 @@
     "test-cov"           : "mocha --require blanket -R html-cov > cov/coverage.html"
   },
 
+  "engines"        : { 
+    "node"               : ">=0.10.0" 
+  },
+
   "license"        : "MIT"
 }