diff --git a/manifest.json b/manifest.json
index fdbb369..b7e28d5 100644
--- a/manifest.json
+++ b/manifest.json
@@ -3,7 +3,7 @@
 	"id": "riot",
 	"packaging_format": 1,
 	"requirements": {
-		"yunohost": ">= 2.7.14"
+		"yunohost": ">= 3.5.2.2"
 	},
 	"description": {
 		"en": "A web client for matrix",
diff --git a/scripts/_common.sh b/scripts/_common.sh
index eada8cc..79d5072 100755
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -13,11 +13,11 @@ final_path="/var/www/$app"
 
 config_riot() {
     cp ../conf/config.json $final_path/config.json
-    ynh_replace_string __DEFAULT_SERVER__ $default_home_server $final_path/config.json
+    ynh_replace_string --match_string __DEFAULT_SERVER__ --replace_string $default_home_server --target_file $final_path/config.json
 }
 
 install_source() {
-    ynh_setup_source $final_path/
+    ynh_setup_source --dest_dir $final_path/
 
     # if the default homeserver is external we dont add the sso support
     if [[ $(yunohost domain list | grep "$default_home_server") ]]
diff --git a/scripts/backup b/scripts/backup
index 09186fa..c63aaac 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -19,14 +19,17 @@ source ../settings/scripts/_common.sh
 #=================================================
 
 # Retrieve arguments
-domain=$(ynh_app_setting_get $app domain)
+ynh_script_progression --message="Loading installation settings..."
+domain=$(ynh_app_setting_get --app $app --key domain)
+
+ynh_script_progression --message="Backing configuration..."
 
 # Copy Nginx config
-ynh_backup "/etc/nginx/conf.d/${domain}.d/${app}.conf" "nginx.conf"
+ynh_backup --src_path "/etc/nginx/conf.d/${domain}.d/${app}.conf" "nginx.conf"
 
 # BACKUP THE PHP-FPM CONFIGURATION
-ynh_backup "/etc/php5/fpm/pool.d/$app.conf"
+ynh_backup --src_path "/etc/php5/fpm/pool.d/$app.conf"
 
 # Backup riot files
-ynh_backup "/var/www/$app"
-
+ynh_script_progression --message="Backing up the main app directory..."
+ynh_backup --src_path "/var/www/$app"
diff --git a/scripts/change_url b/scripts/change_url
index e233f5d..d041fb6 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -15,23 +15,28 @@ source ./experimental_helper.sh
 source ./_common.sh
 
 # Retrive arguments
+ynh_script_progression --message="Loading installation settings..."
 old_domain=$YNH_APP_OLD_DOMAIN
-path_url=$(ynh_normalize_url_path ${YNH_APP_NEW_PATH:-'/'})
+path_url=$(ynh_normalize_url_path --path_url ${YNH_APP_NEW_PATH:-'/'})
 domain=$YNH_APP_NEW_DOMAIN
 
 #=================================================
 # STANDARD MODIFICATIONS
 #=================================================
 
+ynh_script_progression --message="Updating configuration..."
+
 # Update nginx config
 if [ "$old_domain" != "$domain" ]
 then
     # Delete file checksum for the old conf file location
-    ynh_delete_file_checksum "/etc/nginx/conf.d/$old_domain.d/$app.conf"
+    ynh_delete_file_checksum --file "/etc/nginx/conf.d/$old_domain.d/$app.conf"
 
     mv "/etc/nginx/conf.d/$old_domain.d/$app.conf" "/etc/nginx/conf.d/$domain.d/$app.conf"
 
     # Store file checksum for the new config file location
-    ynh_store_file_checksum "/etc/nginx/conf.d/$domain.d/$app.conf"
+    ynh_store_file_checksum --file "/etc/nginx/conf.d/$domain.d/$app.conf"
 fi
 ynh_add_nginx_config
+
+ynh_script_progression --message="Change of URL completed for $app" --last
diff --git a/scripts/experimental_helper.sh b/scripts/experimental_helper.sh
index 9af5ee2..e69de29 100644
--- a/scripts/experimental_helper.sh
+++ b/scripts/experimental_helper.sh
@@ -1,10 +0,0 @@
-# Delete a file checksum from the app settings
-#
-# $app should be defined when calling this helper
-#
-# usage: ynh_remove_file_checksum file
-# | arg: file - The file for which the checksum will be deleted
-ynh_delete_file_checksum () {
-	local checksum_setting_name=checksum_${1//[\/ ]/_}	# Replace all '/' and ' ' by '_'
-	ynh_app_setting_delete $app $checksum_setting_name
-}
diff --git a/scripts/install b/scripts/install
index 4f926c1..7b27b74 100644
--- a/scripts/install
+++ b/scripts/install
@@ -14,35 +14,40 @@ ynh_abort_if_errors
 source ./experimental_helper.sh
 source ./_common.sh
 
+ynh_script_progression --message="Validating installation parameters..."
+
 # Retrieve arguments
 domain=$YNH_APP_ARG_DOMAIN
-path_url=$(ynh_normalize_url_path $YNH_APP_ARG_PATH)
+path_url=$(ynh_normalize_url_path --path_url $YNH_APP_ARG_PATH)
 is_public=$YNH_APP_ARG_IS_PUBLIC
 default_home_server=$YNH_APP_ARG_DEFAULT_HOME_SERVER
 
-# Check domain/path availability
-ynh_webpath_available $domain $path_url || ynh_die "$domain$path_url is not available, please use an other domain or path."
-ynh_webpath_register $app $domain $path_url
+# Register (book) web path
+ynh_webpath_register --app $app --domain $domain --path_url $path_url
 
 # Check Final Path availability
-test ! -e "$final_path" || ynh_die "This path already contains a folder"
+test ! -e "$final_path" || ynh_die --message "This path already contains a folder"
 
 # Enregistre les infos dans la config YunoHost
-ynh_app_setting_set $app is_public $is_public
-ynh_app_setting_set $app default_home_server $default_home_server
-ynh_app_setting_set $app final_path $final_path
+ynh_script_progression --message="Storing installation settings..."
+ynh_app_setting_set --app $app --key is_public --value $is_public
+ynh_app_setting_set --app $app --key default_home_server --value $default_home_server
+ynh_app_setting_set --app $app --key final_path --value $final_path
 
 #=================================================
 # STANDARD MODIFICATIONS
 #=================================================
 
 # Create a system user
-ynh_system_user_create $app
+ynh_script_progression --message="Configuring system user..."
+ynh_system_user_create --username $app
 
 # Get source and install in source dir
+ynh_script_progression --message="Installing sources files..." --weight=10
 install_source
 
 # Create a dedicated php-fpm config
+ynh_script_progression --message="Configuring application..."
 ynh_add_fpm_config
 
 # Update Riot config
@@ -56,13 +61,15 @@ ynh_add_nginx_config
 #=================================================
 
 # Set final permission
+ynh_script_progression --message="Protecting directory"
 set_permission
 
+ynh_script_progression --message="Configuring permissions"
 if [ "$is_public" = "0" ];
 then	# Retire l'accès public
-    ynh_app_setting_delete $app skipped_uris
+    ynh_app_setting_delete --app $app --key skipped_uris
 else
-    ynh_app_setting_set $app unprotected_uris "/"
+    ynh_app_setting_set --app $app --key unprotected_uris --value "/"
 fi
 
 # Recharge la configuration Nginx
diff --git a/scripts/remove b/scripts/remove
index fb4fec3..73e52bf 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -16,16 +16,20 @@ source ./_common.sh
 #=================================================
 
 # Retrieve arguments
-domain=$(ynh_app_setting_get $app domain)
+ynh_script_progression --message="Loading installation settings..."
+domain=$(ynh_app_setting_get --app $app --key domain)
+
+# Remove all files
+ynh_script_progression --message="Removing app main directory..." --weight=4
+ynh_secure_remove --file="/var/www/$app"
+
+# Suppression de la configuration nginx
+ynh_script_progression --message="Removing configuration..."
+ynh_remove_nginx_config
 
 # Remove the dedicated php-fpm config
 ynh_remove_fpm_config
 
-# Remove all files
-ynh_secure_remove "/var/www/$app"
-
-# Suppression de la configuration nginx
-ynh_remove_nginx_config
-
 # Delete a system user
-ynh_system_user_delete $app
\ No newline at end of file
+ynh_script_progression --message="Removing apps user..."
+ynh_system_user_delete --username $app
diff --git a/scripts/restore b/scripts/restore
index 2817d89..c78c5d0 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -15,20 +15,23 @@ source ../settings/scripts/experimental_helper.sh
 source ../settings/scripts/_common.sh
 
 # Retrieve arguments
-domain=$(ynh_app_setting_get $app domain)
-path_url=$(ynh_app_setting_get $app path)
+ynh_script_progression --message="Loading settings..."
+domain=$(ynh_app_setting_get --app $app --key domain)
+path_url=$(ynh_app_setting_get --app $app --key path)
 
 # Check domain/path availability
-ynh_webpath_available $domain $path_url || ynh_die "$domain/$path_url is not available, please use an other domain or path."
+ynh_webpath_available --domain $domain --path_url $path_url || ynh_die --message "$domain/$path_url is not available, please use an other domain or path."
 
 #=================================================
 # STANDARD RESTORATION STEPS
 #=================================================
 
 # Create a system user
-ynh_system_user_create $app
+ynh_script_progression --message="Recreating the dedicated system user..."
+ynh_system_user_create --username $app
 
 # Restore all config and data
+ynh_script_progression --message="Restoring files..." --weight=10
 ynh_restore
 
 #=================================================
@@ -36,8 +39,10 @@ ynh_restore
 #=================================================
 
 # Set final permission
+ynh_script_progression --message="Protecting directory..."
 set_permission
 
 # Reload nginx
+ynh_script_progression --message="Reloading services..."
 systemctl reload nginx.service
-systemctl reload php5-fpm
\ No newline at end of file
+systemctl reload php5-fpm
diff --git a/scripts/upgrade b/scripts/upgrade
index 0ec95fb..bd17998 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -15,27 +15,32 @@ source ./experimental_helper.sh
 source ./_common.sh
 
 # Retrieve arguments
-domain=$(ynh_app_setting_get $app domain)
-path_url=$(ynh_normalize_url_path $(ynh_app_setting_get $app path))
-is_public=$(ynh_app_setting_get $app is_public)
-final_path=$(ynh_app_setting_get $app final_path)
-default_home_server=$(ynh_app_setting_get $app default_home_server)
+ynh_script_progression --message="Loading installation settings..."
+domain=$(ynh_app_setting_get --app $app --key domain)
+path_url=$(ynh_normalize_url_path --path_url $(ynh_app_setting_get --app $app --key path))
+is_public=$(ynh_app_setting_get --app $app --key is_public)
+final_path=$(ynh_app_setting_get --app $app --key final_path)
+default_home_server=$(ynh_app_setting_get --app $app --key default_home_server)
 
 #=================================================
 # MIGRATION FROM OLD VERSION
 #=================================================
 
 # Create a system user
-grep "riot" "/etc/passwd" || ynh_system_user_create $app
+ynh_script_progression --message="Migrating application..." --weight=1
+grep "riot" "/etc/passwd" || ynh_system_user_create --username $app
 
 #=================================================
 # STANDARD UPGRADE STEPS
 #=================================================
 
 # Get source and install in source dir
-ynh_secure_remove $final_path/bundles
+ynh_script_progression --message="Upgrading source files..." --weight=6
+ynh_secure_remove --file=$final_path/bundles
 install_source
 
+ynh_script_progression --message="Configuring application..."
+
 # Create a dedicated php-fpm config
 ynh_add_fpm_config
 
@@ -50,6 +55,7 @@ ynh_add_nginx_config
 #=================================================
 
 # Set final permission
+ynh_script_progression --message="Protecting directory..."
 set_permission
 
 # Recharge la configuration Nginx