diff --git a/README.md b/README.md
index ab8b064..0de7dbd 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,10 @@ Need convincing?
 * Try it in your browser: [markdown-it-katex demo](http://waylonflinn.github.io/markdown-it-katex/)
 
 ## Usage
+Install markdown-it
+```
+npm install markdown-it
+```
 
 Install the plugin