diff --git a/package.json b/package.json
index a76c21a..afc6ed5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "torrust-index-types-lib",
-  "version": "3.0.0-alpha.6",
+  "version": "3.0.0-alpha.7",
   "description": "Contains common types for the Torrust project.",
   "repository": {
     "type": "git",
diff --git a/src/types/settings.ts b/src/types/settings.ts
index 38f13c5..28ab0c0 100644
--- a/src/types/settings.ts
+++ b/src/types/settings.ts
@@ -3,7 +3,7 @@ export type Settings = {
     logging: Logging,
     website: Website,
     tracker: Tracker,
-    net: Network,
+    net: Net,
     auth: Auth,
     database: Database,
     mail: Mail,
@@ -12,6 +12,12 @@ export type Settings = {
     tracker_statistics_importer: TrackerStatisticsImporter
 }
 
+export type Metadata = {
+    app: string,
+    purpose: string,
+    schema_version: string,
+}
+
 export type Logging = {
     threshold: Threshold,
 }
@@ -29,7 +35,7 @@ export type Tracker = {
     url: string
 }
 
-export type Network = {
+export type Net = {
     base_url: string | null
     bind_address: string
     tsl: Tsl | null
@@ -37,7 +43,7 @@ export type Network = {
 
 export type Auth = {
     email_on_signup: EmailOnSignup
-    secret_key: string
+    user_claim_token_pepper: string
     password_constraints: PasswordConstraints
 }
 
@@ -46,7 +52,6 @@ export type Database = {
 }
 
 export type Mail = {
-    email_verification_enabled: boolean
     from: string
     reply_to: string
     smtp: Smtp
@@ -65,6 +70,10 @@ export type Api = {
     max_torrent_page_size: number
 }
 
+export type Registration = {
+    email: Email
+}
+
 export type TrackerStatisticsImporter = {
     port: number
     torrent_info_update_interval: number
@@ -112,4 +121,9 @@ export enum Threshold {
     Info = "info",
     Debug = "debug",
     Trace = "trace",
+}
+
+export type Email = {
+    required: boolean
+    verification_required: boolean
 }
\ No newline at end of file