diff --git a/docs/site/installation.md b/docs/site/installation.md
index 97d2436..950553d 100644
--- a/docs/site/installation.md
+++ b/docs/site/installation.md
@@ -5,7 +5,7 @@ $ apt update
 $ apt install git gcc g++ make python3-dev python3-pip libxml2-dev libxslt1-dev zlib1g-dev gettext curl redis-server
 $ curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -
 $ apt install nodejs
-$ npm install -g sass postcss-cli autoprefixer
+$ npm install -g sass postcss-cli postcss autoprefixer
 ```
 
 ## Creating the database