diff --git a/docs/CONTRIBUTING.md b/docs/CONTRIBUTING.md
index 25332674..d895ce48 100644
--- a/docs/CONTRIBUTING.md
+++ b/docs/CONTRIBUTING.md
@@ -17,10 +17,11 @@ Developing
 
 #### Common
 
-- [NodeJS](https://nodejs.org) (at least v6)
+- [NodeJS](https://nodejs.org) (at least v6.11)
 - [Python 2.7](https://www.python.org)
 - [jq](https://stedolan.github.io/jq/)
 - [curl](https://curl.haxx.se/)
+- [npm](https://www.npmjs.com/) (version 3.10)
 
 ```sh
 pip install -r requirements.txt