diff --git a/README.md b/README.md
index 9a878b5..28456dc 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ curl -L bit.ly/nodejs-min | bash
 # Install LetsEncrypt
 
 ```bash
-npm install -g letsencrypt-cli
+npm install -g letsencrypt-cli@2.x
 ```
 
 ## Usage