diff --git a/scripts/upgrade b/scripts/upgrade
index 19b98c5..b881790 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -105,6 +105,16 @@ ynh_script_progression --message="Upgrading PHP-FPM configuration..." --weight=2
 # Create a dedicated PHP-FPM config
 ynh_add_fpm_config --package="$extra_php_dependencies"
 
+#=================================================
+# MODIFY A CONFIG FILE
+#=================================================
+
+cp -a ../conf/database.php $final_path/app/Config/database.php
+
+ynh_replace_string --match_string="__DBUSER__" --replace_string="$db_name" --target_file="$final_path/app/Config/database.php"
+ynh_replace_string --match_string="__DBPWD__"  --replace_string="$db_pwd"  --target_file="$final_path/app/Config/database.php"
+ynh_replace_string --match_string="__DBNAME__" --replace_string="$db_name" --target_file="$final_path/app/Config/database.php"
+
 #=================================================
 # MODIFY FIRST.CTP 
 #=================================================