diff --git a/readme.md b/readme.md
index f271abf..b664db2 100644
--- a/readme.md
+++ b/readme.md
@@ -40,7 +40,7 @@ fetch("/")
 
 ## Get Started
 
-1. Install: `npm i @total-typescript/ts-reset`
+1. Install: `npm i -D @total-typescript/ts-reset`
 
 2. Import **once** into any `.ts` or `.tsx` file: