diff --git a/README.md b/README.md
index 07aec9f..cdf6136 100644
--- a/README.md
+++ b/README.md
@@ -6,4 +6,5 @@ The bot is currently running as [@archcnmsbot](http://telegram.me/archcnmsbot).
 
 To run the bot yourself, you will need: 
 - Python3
+- Numpy
 - The [python-telegram-bot](https://github.com/python-telegram-bot/python-telegram-bot) module