diff --git a/README.md b/README.md
index 512c69c..174a830 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ Umami is a simple, easy to use, self-hosted web analytics solution. The goal is
 - Open-source
 
 
-**Shipped version:** 1.32.1~ynh1
+**Shipped version:** 1.33~ynh1
 
 **Demo:** https://app.umami.is/share/8rmHaheU/umami.is
 
diff --git a/README_fr.md b/README_fr.md
index 16eb57f..a4eb4e4 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -31,7 +31,7 @@ Umami is a simple, easy to use, self-hosted web analytics solution. The goal is
 - Open-source
 
 
-**Version incluse :** 1.32.1~ynh1
+**Version incluse :** 1.33~ynh1
 
 **Démo :** https://app.umami.is/share/8rmHaheU/umami.is
 
diff --git a/check_process b/check_process
index 7439cc4..ec2c3e5 100644
--- a/check_process
+++ b/check_process
@@ -6,7 +6,6 @@
 		language="fr"
 		admin="john"
 		password="1Strong-Password"
-		port="666"
 	; Checks
 		pkg_linter=1
 		setup_sub_dir=0
@@ -15,15 +14,15 @@
 		setup_private=1
 		setup_public=1
 		upgrade=1
-		#upgrade=1	from_commit=CommitHash
+		# 1.32.1~ynh1
+		#upgrade=1	from_commit=267cb1aced761924cca8a2608be3a1b9bd14605c
 		backup_restore=1
 		multi_instance=1
-		port_already_use=0
 		change_url=1
 ;;; Options
 Email=
 Notification=none
 ;;; Upgrade options
-	; commit=CommitHash
-		name=Name and date of the commit.
+	; commit=267cb1aced761924cca8a2608be3a1b9bd14605c
+		name=# 1.32.1~ynh1
 		manifest_arg=domain=DOMAIN&path=PATH&is_public=1&language=fr&admin=USER&password=pass&port=666&
diff --git a/conf/.env b/conf/.env
index b49819b..9d5f6b8 100644
--- a/conf/.env
+++ b/conf/.env
@@ -1,3 +1,2 @@
 DATABASE_URL=postgresql://__DB_USER__:__DB_PWD__@localhost:5432/__DB_NAME__
-HASH_SALT=__SALT__
 DISABLE_TELEMETRY = 1
diff --git a/conf/app.src b/conf/app.src
index 9ab447b..3fd8024 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://github.com/mikecao/umami/archive/refs/tags/v1.32.1.tar.gz
-SOURCE_SUM=6cad8de19879a3d48844efcfc2f794203ab5ae5ab1900bf58b936147f4491dd3
+SOURCE_URL=https://github.com/mikecao/umami/archive/refs/tags/v1.33.tar.gz
+SOURCE_SUM=22d29436d582f26ca913b7a641a03f3c6b82f6263a5e0fc0e4eae5ef7c8116b5
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=tar.gz
 SOURCE_IN_SUBDIR=true
diff --git a/manifest.json b/manifest.json
index 8532dc2..d57520f 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Simple, fast, privacy-focused alternative to Google Analytics",
         "fr": "Analyse de trafic web simple et respectueux"
     },
-    "version": "1.32.1~ynh1",
+    "version": "1.33~ynh1",
     "url": "https://umami.is/",
     "upstream": {
         "license": "MIT",
@@ -26,7 +26,7 @@
     "multi_instance": true,
     "services": [
         "nginx",
-        "mysql"
+        "postgresql"
     ],
     "arguments": {
         "install": [
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 7f17471..8fddb7d 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -5,7 +5,7 @@
 #=================================================
 
 # dependencies used by the app
-pkg_dependencies="postgresql"
+pkg_dependencies="postgresql postgresql-contrib"
 
 nodejs_version=16
 
diff --git a/scripts/backup b/scripts/backup
index 199209a..f77e44c 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -56,9 +56,9 @@ ynh_backup --src_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 ynh_backup --src_path="/etc/systemd/system/$app.service"
 
 #=================================================
-# BACKUP THE POSTGRESQL DATABASE
+# BACKUP THE DATABASE
 #=================================================
-ynh_print_info --message="Backing up the PostgreSQL database..."
+ynh_print_info --message="Backing up the database..."
 
 ynh_psql_dump_db --database="$db_name" > db.sql
 
diff --git a/scripts/install b/scripts/install
index 043a1ae..9a6bbe6 100755
--- a/scripts/install
+++ b/scripts/install
@@ -27,7 +27,6 @@ ynh_abort_if_errors
 domain=$YNH_APP_ARG_DOMAIN
 path_url="/"
 is_public=$YNH_APP_ARG_IS_PUBLIC
-salt=$(ynh_string_random --length=16)
 
 app=$YNH_APP_INSTANCE_NAME
 
@@ -72,6 +71,9 @@ ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
 ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version
 ynh_use_nodejs
 
+# Install Yarn
+ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
+
 #=================================================
 # CREATE DEDICATED USER
 #=================================================
@@ -81,9 +83,9 @@ ynh_script_progression --message="Configuring system user..." --weight=1
 ynh_system_user_create --username=$app --home_dir="$final_path"
 
 #=================================================
-# CREATE A POSTGRESQL DATABASE
+# CREATE A DATABASE
 #=================================================
-ynh_script_progression --message="Creating a PostgreSQL database..." --weight=2
+ynh_script_progression --message="Creating a database..." --weight=2
 
 db_name=$(ynh_sanitize_dbid --db_name=$app)
 db_user=$db_name
@@ -119,8 +121,8 @@ ynh_script_progression --message="Adding a configuration file..." --weight=1
 
 ynh_add_config --template="../conf/.env" --destination="$final_path/.env"
 
-#chmod 650 "$final_path/.env"
-#chown $app:$app "$final_path/.env"
+chmod 650 "$final_path/.env"
+chown $app:$app "$final_path/.env"
 
 #=================================================
 # CONFIGURE THE APP
@@ -128,12 +130,11 @@ ynh_add_config --template="../conf/.env" --destination="$final_path/.env"
 ynh_script_progression --message="Configuring the app..." --weight=15
 
 pushd $final_path
-	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH $ynh_npm install
-	ynh_psql_connect_as --user="$db_name" --password="$db_pwd" --database="$db_name" < $final_path/sql/schema.postgresql.sql
-	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH $ynh_npm run build
+	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn install
+	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn build
+	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn update-db
 popd
 
-
 #=================================================
 # SETUP SYSTEMD
 #=================================================
diff --git a/scripts/remove b/scripts/remove
index b337ab2..5490de6 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -52,9 +52,9 @@ ynh_script_progression --message="Removing logrotate configuration..." --weight=
 ynh_remove_logrotate
 
 #=================================================
-# REMOVE THE POSTGRESQL DATABASE
+# REMOVE THE DATABASE
 #=================================================
-ynh_script_progression --message="Removing the PostgreSQL database..." --weight=2
+ynh_script_progression --message="Removing the database..." --weight=2
 
 # Remove a database if it exists, along with the associated user
 ynh_psql_remove_db --db_user=$db_user --db_name=$db_name
diff --git a/scripts/restore b/scripts/restore
index b6834eb..450d71d 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -24,7 +24,7 @@ ynh_abort_if_errors
 #=================================================
 # LOAD SETTINGS
 #=================================================
-ynh_script_progression --message="Loading installation settings..." --time --weight=1
+ynh_script_progression --message="Loading installation settings..." --weight=1
 
 app=$YNH_APP_INSTANCE_NAME
 
@@ -38,7 +38,7 @@ db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
 #=================================================
 # CHECK IF THE APP CAN BE RESTORED
 #=================================================
-ynh_script_progression --message="Validating restoration parameters..." --time --weight=1
+ynh_script_progression --message="Validating restoration parameters..." --weight=1
 
 test ! -d $final_path \
 	|| ynh_die --message="There is already a directory: $final_path "
@@ -48,7 +48,7 @@ test ! -d $final_path \
 #=================================================
 # RECREATE THE DEDICATED USER
 #=================================================
-ynh_script_progression --message="Recreating the dedicated system user..." --time --weight=1
+ynh_script_progression --message="Recreating the dedicated system user..." --weight=1
 
 # Create the dedicated user (if not existing)
 ynh_system_user_create --username=$app --home_dir="$final_path"
@@ -56,7 +56,7 @@ ynh_system_user_create --username=$app --home_dir="$final_path"
 #=================================================
 # RESTORE THE APP MAIN DIR
 #=================================================
-ynh_script_progression --message="Restoring the app main directory..." --time --weight=1
+ynh_script_progression --message="Restoring the app main directory..." --weight=5
 
 ynh_restore_file --origin_path="$final_path"
 
@@ -69,29 +69,27 @@ chown -R $app:www-data "$final_path"
 #=================================================
 # REINSTALL DEPENDENCIES
 #=================================================
-ynh_script_progression --message="Reinstalling dependencies..." --time --weight=1
+ynh_script_progression --message="Reinstalling dependencies..." --weight=10
 
 ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
 
 # Install Nodejs
 ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version
 
+# Install Yarn
+ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
+
 #=================================================
 # RESTORE THE NGINX CONFIGURATION
 #=================================================
-ynh_script_progression --message="Restoring the NGINX web server configuration..." --time --weight=1
+ynh_script_progression --message="Restoring the NGINX web server configuration..." --weight=1
 
 ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
 #=================================================
-# RESTORE THE MYSQL DATABASE
+# RESTORE THE DATABASE
 #=================================================
-ynh_script_progression --message="Restoring the MySQL database..." --time --weight=1
-
-#=================================================
-# RESTORE THE POSTGRESQL DATABASE
-#=================================================
-ynh_script_progression --message="Restoring the PostgreSQL database..." --weight=6
+ynh_script_progression --message="Restoring the database..." --weight=6
 
 ynh_psql_test_if_first_run
 ynh_psql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$db_pwd
@@ -100,7 +98,7 @@ ynh_psql_execute_file_as_root --file="./db.sql" --database=$db_name
 #=================================================
 # RESTORE SYSTEMD
 #=================================================
-ynh_script_progression --message="Restoring the systemd configuration..." --time --weight=1
+ynh_script_progression --message="Restoring the systemd configuration..." --weight=1
 
 ynh_restore_file --origin_path="/etc/systemd/system/$app.service"
 systemctl enable $app.service --quiet
@@ -108,14 +106,14 @@ systemctl enable $app.service --quiet
 #=================================================
 # INTEGRATE SERVICE IN YUNOHOST
 #=================================================
-ynh_script_progression --message="Integrating service in YunoHost..." --time --weight=1
+ynh_script_progression --message="Integrating service in YunoHost..." --weight=1
 
 yunohost service add $app --description="Web Analytics" --log="/var/log/$app/$app.log"
 
 #=================================================
 # START SYSTEMD SERVICE
 #=================================================
-ynh_script_progression --message="Starting a systemd service..." --time --weight=1
+ynh_script_progression --message="Starting a systemd service..." --weight=1
 
 ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"
 
@@ -124,7 +122,7 @@ ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$ap
 #=================================================
 # RELOAD NGINX AND PHP-FPM
 #=================================================
-ynh_script_progression --message="Reloading NGINX web server..." --time --weight=1
+ynh_script_progression --message="Reloading NGINX web server..." --weight=1
 
 ynh_systemd_action --service_name=nginx --action=reload
 
@@ -132,4 +130,4 @@ ynh_systemd_action --service_name=nginx --action=reload
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Restoration completed for $app" --time --last
+ynh_script_progression --message="Restoration completed for $app" --last
diff --git a/scripts/upgrade b/scripts/upgrade
index 45ad72a..c1eefc2 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -20,7 +20,6 @@ domain=$(ynh_app_setting_get --app=$app --key=domain)
 path_url=$(ynh_app_setting_get --app=$app --key=path)
 port=$(ynh_app_setting_get --app=$app --key=port)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
 
 #=================================================
 # CHECK VERSION
@@ -81,10 +80,14 @@ chown -R $app:www-data "$final_path"
 ynh_script_progression --message="Upgrading dependencies..." --weight=10
 
 ynh_install_app_dependencies $pkg_dependencies
+
 # Install Nodejs
 ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version
 ynh_use_nodejs
 
+# Install Yarn
+ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
+
 #=================================================
 # NGINX CONFIGURATION
 #=================================================
@@ -99,8 +102,9 @@ ynh_add_nginx_config
 ynh_script_progression --message="Configuring the app..." --weight=15
 
 pushd $final_path
-	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH $ynh_npm install
-	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH $ynh_npm run build
+	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn install
+	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn build
+	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn update-db
 popd
 
 #=================================================