diff --git a/conf/upgrade.sql b/conf/upgrade.sql
new file mode 100644
index 0000000..82c3527
--- /dev/null
+++ b/conf/upgrade.sql
@@ -0,0 +1,109 @@
+SET AUTOCOMMIT = 0;
+START TRANSACTION;
+
+/* Set category parent_id to be nullable + remove "uncategorized" value */
+ALTER TABLE `cp_categories` CHANGE `parent_id` `parent_id` INT(10) UNSIGNED NULL DEFAULT NULL;
+UPDATE `cp_categories` SET parent_id = null WHERE parent_id = 0;
+DELETE FROM `cp_categories` WHERE id = 0;
+
+/* rename `location_osmid` to `location_osm` */
+ALTER TABLE `cp_podcasts` CHANGE `location_osmid` `location_osm` VARCHAR(12) NULL DEFAULT NULL;
+ALTER TABLE `cp_episodes` CHANGE `location_osmid` `location_osm` VARCHAR(12) NULL DEFAULT NULL;
+
+/* use more precise DECIMAL type for duration and start time */ 
+ALTER TABLE `cp_episodes` CHANGE `audio_file_duration` `audio_file_duration` DECIMAL(8,3) UNSIGNED NOT NULL COMMENT 'Playtime in seconds';
+ALTER TABLE `cp_soundbites` CHANGE `start_time` `start_time` DECIMAL(8,3) UNSIGNED NOT NULL;
+ALTER TABLE `cp_soundbites` CHANGE `duration` `duration` DECIMAL(7,3) UNSIGNED NOT NULL;
+ALTER TABLE `cp_analytics_podcasts` CHANGE `duration` `duration` DECIMAL(15,3) UNSIGNED NOT NULL;
+
+/* add pages html content in database */
+ALTER TABLE `cp_pages` CHANGE `content` `content_markdown` TEXT NOT NULL;
+ALTER TABLE `cp_pages` ADD `content_html` TEXT NOT NULL AFTER `content_markdown`;
+
+/* Longitude and latitude precision with DECIMAL */
+ALTER TABLE `cp_soundbites` CHANGE `latitude` `latitude` DECIMAL(8,6) NULL DEFAULT NULL;
+ALTER TABLE `cp_soundbites` CHANGE `longitude` `longitude` DECIMAL(9,6) NULL DEFAULT NULL;
+
+/* update analytics procedures */
+
+DELIMITER //
+
+DROP PROCEDURE `cp_analytics_podcasts` //
+CREATE PROCEDURE `cp_analytics_podcasts`(
+	IN `p_podcast_id` INT UNSIGNED,
+	IN `p_episode_id` INT UNSIGNED,
+	IN `p_country_code` VARCHAR(3),
+	IN `p_region_code` VARCHAR(3),
+	IN `p_latitude` DECIMAL(8,6),
+	IN `p_longitude` DECIMAL(9,6),
+	IN `p_service` VARCHAR(128),
+	IN `p_app` VARCHAR(128),
+	IN `p_device` VARCHAR(32),
+	IN `p_os` VARCHAR(32),
+	IN `p_bot` TINYINT(1) UNSIGNED,
+	IN `p_filesize` INT UNSIGNED,
+	IN `p_duration` DECIMAL(8,3) UNSIGNED,
+	IN `p_age` INT UNSIGNED,
+	IN `p_new_listener` TINYINT(1) UNSIGNED
+) COMMENT 'Add one hit in podcast logs tables.' DETERMINISTIC MODIFIES SQL DATA SQL SECURITY INVOKER
+BEGIN
+
+SET @current_datetime = NOW();
+SET @current_date = DATE(@current_datetime);
+SET @current_hour = HOUR(@current_datetime);
+
+IF NOT `p_bot` THEN
+    INSERT INTO `cp_analytics_podcasts`(`podcast_id`, `date`)
+        VALUES (p_podcast_id, @current_date)
+        ON DUPLICATE KEY UPDATE
+            `duration`=`duration`+`p_duration`,
+            `bandwidth`=`bandwidth`+`p_filesize`,
+            `hits`=`hits`+1,
+            `unique_listeners`=`unique_listeners`+`p_new_listener`;
+    INSERT INTO `cp_analytics_podcasts_by_hour`(`podcast_id`, `date`, `hour`)
+        VALUES (p_podcast_id, @current_date, @current_hour)
+        ON DUPLICATE KEY UPDATE `hits`=`hits`+1;
+    INSERT INTO `cp_analytics_podcasts_by_episode`(`podcast_id`, `episode_id`, `date`, `age`)
+        VALUES (p_podcast_id, p_episode_id, @current_date, p_age)
+        ON DUPLICATE KEY UPDATE `hits`=`hits`+1;
+    INSERT INTO `cp_analytics_podcasts_by_country`(`podcast_id`, `country_code`, `date`)
+        VALUES (p_podcast_id, p_country_code, @current_date)
+        ON DUPLICATE KEY UPDATE `hits`=`hits`+1;
+    INSERT INTO `cp_analytics_podcasts_by_region`(`podcast_id`, `country_code`, `region_code`, `latitude`, `longitude`, `date`)
+        VALUES (p_podcast_id, p_country_code, p_region_code, p_latitude, p_longitude, @current_date)
+        ON DUPLICATE KEY UPDATE `hits`=`hits`+1;
+END IF;
+INSERT INTO `cp_analytics_podcasts_by_player`(`podcast_id`, `service`, `app`, `device`, `os`, `is_bot`, `date`)
+    VALUES (p_podcast_id, p_service, p_app, p_device, p_os, p_bot, @current_date)
+    ON DUPLICATE KEY UPDATE `hits`=`hits`+1;
+END //
+
+DROP PROCEDURE `cp_analytics_unknown_useragents` //
+CREATE PROCEDURE `cp_analytics_unknown_useragents`(IN `p_useragent` VARCHAR(191)) COMMENT 'Add an unknown useragent to table cp_analytics_unknown_useragents.' DETERMINISTIC MODIFIES SQL DATA SQL SECURITY INVOKER INSERT INTO `cp_analytics_unknown_useragents`(`useragent`)
+VALUES (p_useragent)
+ON DUPLICATE KEY UPDATE `hits`=`hits`+1 //
+
+DROP PROCEDURE `cp_analytics_website` //
+CREATE PROCEDURE `cp_analytics_website`(
+	IN `p_podcast_id` INT UNSIGNED,
+	IN `p_browser` VARCHAR(191),
+	IN `p_entry_page` VARCHAR(512),
+	IN `p_referer_url` VARCHAR(512),
+	IN `p_domain` VARCHAR(128),
+	IN `p_keywords` VARCHAR(384)
+) COMMENT 'Add one hit in website logs tables.' DETERMINISTIC MODIFIES SQL DATA SQL SECURITY INVOKER BEGIN
+
+SET @current_date = DATE(NOW());
+
+INSERT INTO cp_analytics_website_by_browser(`podcast_id`, `browser`, `date`)
+    VALUES (p_podcast_id, p_browser, @current_date)
+    ON DUPLICATE KEY UPDATE `hits`=`hits`+1;
+INSERT INTO cp_analytics_website_by_referer(`podcast_id`, `referer_url`, `domain`, `keywords`, `date`)
+    VALUES (p_podcast_id, p_referer_url, p_domain, p_keywords, @current_date)
+    ON DUPLICATE KEY UPDATE `hits`=`hits`+1;
+INSERT INTO cp_analytics_website_by_entry_page(`podcast_id`, `entry_page_url`, `date`)
+    VALUES (p_podcast_id, p_entry_page, @current_date)
+    ON DUPLICATE KEY UPDATE `hits`=`hits`+1;
+END //
+
+COMMIT;
diff --git a/scripts/backup b/scripts/backup
index 35163de..e05640a 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -26,7 +26,7 @@ app=$YNH_APP_INSTANCE_NAME
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 domain=$(ynh_app_setting_get --app=$app --key=domain)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
+phpversion=$YNH_PHP_VERSION
 
 #=================================================
 # DECLARE DATA AND CONF FILES TO BACKUP
diff --git a/scripts/restore b/scripts/restore
index ce267f6..f089a84 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -32,7 +32,7 @@ path_url=$(ynh_app_setting_get --app=$app --key=path)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
 db_user=$db_name
-phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
+phpversion=$YNH_PHP_VERSION
 
 #=================================================
 # CHECK IF THE APP CAN BE RESTORED
diff --git a/scripts/upgrade b/scripts/upgrade
index 1f2c614..270699d 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -21,6 +21,7 @@ path_url=$(ynh_app_setting_get --app=$app --key=path)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
 db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
+phpversion=$YNH_PHP_VERSION
 
 #=================================================
 # CHECK VERSION
@@ -92,6 +93,12 @@ chmod 750 "$final_path"
 chmod -R o-rwx "$final_path"
 chown -R $app:www-data "$final_path"
 
+#=================================================
+# UPGRADE DATABASE
+#=================================================
+
+ynh_mysql_execute_file_as_root --file=./conf/upgrade.sql --database=$db_name
+
 #=================================================
 # NGINX CONFIGURATION
 #=================================================