diff --git a/conf/config.yaml.default b/conf/config.yaml.default
index 29ebd45..326d0e1 100644
--- a/conf/config.yaml.default
+++ b/conf/config.yaml.default
@@ -16,7 +16,7 @@ app:
   # Set to 'I UNDERSTAND THIS VIOLATES THE PRIVACY OF MY USERS' to enable
   enable_bookmarker_proxy: false
   # no trailing slash
-  api_url: 'https://turtl.__DOMAIN__'
+  api_url: 'https://__DOMAIN__'
   www_url: 'https://__DOMAIN__'
   login:
     # Max failed login attemps. Set to -1 to disable
diff --git a/conf/systemd.service b/conf/systemd.service
index 6936a63..231ac24 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -1,7 +1,7 @@
 [Unit]
 Description=Turtl Server: Note taking service
 Documentation=https://turtlapp.com/
-After=network.target
+After=network.target postgresql.service
 
 [Service]
 Type=simple
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 7ad5df2..579f669 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=12
 
diff --git a/scripts/backup b/scripts/backup
index a3c46e9..b913da3 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -31,6 +31,7 @@ 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=$app --key=db_name)
+datadir=$(ynh_app_setting_get --app=$app --key=datadir)
 
 #=================================================
 # DECLARE DATA AND CONF FILES TO BACKUP
diff --git a/scripts/remove b/scripts/remove
index 0012aea..4c1f860 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -52,7 +52,7 @@ ynh_script_progression --message="Removing logrotate configuration..." --weight=
 ynh_remove_logrotate
 
 #=================================================
-# REMOVE THE MYSQL DATABASE
+# REMOVE THE POSTGRESQL  DATABASE
 #=================================================
 ynh_script_progression --message="Removing the PostgreSQL database..." --weight=1
 
diff --git a/scripts/restore b/scripts/restore
index 59c5a74..467de90 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -33,6 +33,8 @@ 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=$db_name
+db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
+datadir=$(ynh_app_setting_get --app=$app --key=datadir)
 
 #=================================================
 # CHECK IF THE APP CAN BE RESTORED
@@ -69,6 +71,19 @@ chmod 750 "$final_path"
 chmod -R o-rwx "$final_path"
 chown -R $app:www-data "$final_path"
 
+#=================================================
+# RESTORE THE DATA DIRECTORY
+#=================================================
+ynh_script_progression --message="Restoring the data directory..." --weight=1
+
+ynh_restore_file --origin_path="$datadir" --not_mandatory
+
+mkdir -p $datadir
+
+chmod 750 "$datadir"
+chmod -R o-rwx "$datadir"
+chown -R $app:www-data "$datadir"
+
 #=================================================
 # SPECIFIC RESTORATION
 #=================================================
@@ -81,13 +96,13 @@ ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
 ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version
 
 #=================================================
-# RESTORE THE MYSQL DATABASE
+# RESTORE THE POSTGRESQL DATABASE
 #=================================================
-ynh_script_progression --message="Restoring the MySQL database..." --weight=1
+ynh_script_progression --message="Restoring the PostgreSQL database..." --weight=6
 
-db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
-ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$db_pwd
-ynh_mysql_connect_as --user=$db_user --password=$db_pwd --database=$db_name < ./db.sql
+ynh_psql_test_if_first_run
+ynh_psql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$db_pwd
+ynh_psql_execute_file_as_root --file="./db.sql" --database=$db_name
 
 #=================================================
 # RESTORE SYSTEMD
diff --git a/scripts/upgrade b/scripts/upgrade
index baed730..43b0993 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_user=$db_name
+db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
 
 #=================================================
 # CHECK VERSION