diff --git a/scripts/install b/scripts/install
index e864bb8..5d9c4f8 100644
--- a/scripts/install
+++ b/scripts/install
@@ -17,6 +17,8 @@ if [[ ! $? -eq 0 ]]; then
     echo "Error : the chosen admin user does not exist"
     exit 1
 fi
+# Save admin user
+sudo yunohost app setting yourls admin -v $admin_user
 
 # Generate random password
 db_pwd=$(dd if=/dev/urandom bs=1 count=200 2> /dev/null | tr -c -d 'A-Za-z0-9' | sed -n 's/\(.\{24\}\).*/\1/p')
diff --git a/scripts/upgrade b/scripts/upgrade
new file mode 100644
index 0000000..884a4f9
--- /dev/null
+++ b/scripts/upgrade
@@ -0,0 +1,47 @@
+#!/bin/bash
+
+
+# Retrieve arguments
+domain=$(sudo yunohost app setting yourls domain)
+path=$(sudo yunohost app setting yourls path)
+db_user=yourls
+db_pwd=$(sudo yunohost app setting yourls mysqlpwd)
+admin_user=$(sudo yunohost app setting yourls admin)
+
+
+# Copy files to the right place
+final_path=/var/www/yourls
+sudo mkdir -p $final_path
+sudo cp -a ../sources/* $final_path
+
+sudo cp ../conf/index.php $final_path/
+sudo cp -r ../conf/yunohost_auth $final_path/user/plugins
+
+
+# Change variable in yourls configuration
+sudo cp ../conf/config.php $final_path/user/config.php
+sudo sed -i "s/yunouser/$db_user/g" $final_path/user/config.php
+sudo sed -i "s/yunopass/$db_pwd/g" $final_path/user/config.php
+sudo sed -i "s/yunobase/$db_user/g" $final_path/user/config.php
+sudo sed -i "s/yunodomain/$domain/g" $final_path/user/config.php
+sudo sed -i "s/yourlsuser/$admin_user/g" $final_path/user/config.php
+sudo sed -i "s@_yourlspath@$path@g" $final_path/user/config.php
+
+# Set permissions
+sudo chown -R www-data: $final_path
+
+# Modify Nginx configuration file and copy it to Nginx conf directory
+sed -i "s@LOCATIONTOCHANGE@$path@g" ../conf/nginx.conf*
+sed -i "s@PATHTOCHANGE@${path%/}@g" ../conf/nginx.conf*
+sed -i "s@DOMAINTOCHANGE@$domain@g" ../conf/nginx.conf*
+sed -i "s@ALIASTOCHANGE@$final_path@g" ../conf/nginx.conf*
+nginxconf=/etc/nginx/conf.d/$domain.d/yourls.conf
+sudo cp ../conf/nginx.conf $nginxconf
+sudo chown root: $nginxconf
+sudo chmod 600 $nginxconf
+
+# Reload Nginx and regenerate SSOwat conf
+sudo service nginx reload
+sudo yunohost app setting yourls unprotected_uris -v "/"
+sudo yunohost app ssowatconf
+