diff --git a/src/structures/Guild.js b/src/structures/Guild.js
index b1361aef4..71eb494e6 100644
--- a/src/structures/Guild.js
+++ b/src/structures/Guild.js
@@ -188,6 +188,30 @@ class Guild extends Base {
      */
     this.embedEnabled = data.embed_enabled;
 
+    /**
+     * The type of premium tier:
+     * * 0: NONE
+     * * 1: TIER_1
+     * * 2: TIER_2
+     * * 3: TIER_3
+     * @typedef {number} PremiumTier
+     */
+
+    /**
+     * The premium tier on this guild
+     * @type {PremiumTier}
+     */
+    this.premiumTier = data.premium_tier;
+
+    /**
+     * The total number of users currently boosting this server
+     * @type {?number}
+     * @name Guild#premiumSubscriptionCount
+     */
+    if (typeof data.premium_subscription_count !== 'undefined') {
+      this.premiumSubscriptionCount = data.premium_subscription_count;
+    }
+
     /**
      * Whether widget images are enabled on this guild
      * @type {?boolean}
diff --git a/src/structures/GuildEmoji.js b/src/structures/GuildEmoji.js
index f117a90b4..79fff52f7 100644
--- a/src/structures/GuildEmoji.js
+++ b/src/structures/GuildEmoji.js
@@ -45,6 +45,13 @@ class GuildEmoji extends Emoji {
      */
     if (typeof data.managed !== 'undefined') this.managed = data.managed;
 
+    /**
+     * Whether this emoji is available
+     * @type {boolean}
+     * @name GuildEmoji#available
+     */
+    if (typeof data.available !== 'undefined') this.available = data.available;
+
     if (data.roles) this._roles = data.roles;
   }
 
diff --git a/src/structures/GuildMember.js b/src/structures/GuildMember.js
index 6e575d624..dcd5a93dd 100644
--- a/src/structures/GuildMember.js
+++ b/src/structures/GuildMember.js
@@ -39,7 +39,6 @@ class GuildMember extends Base {
     /**
      * The timestamp the member joined the guild at
      * @type {?number}
-     * @name GuildMember#joinedTimestamp
      */
     this.joinedTimestamp = null;
 
@@ -55,6 +54,12 @@ class GuildMember extends Base {
      */
     this.lastMessageChannelID = null;
 
+    /**
+     * The timestamp of when the member used their Nitro boost on the guild, if it was used
+     * @type {?number}
+     */
+    this.premiumSinceTimestamp = null;
+
     /**
      * Whether the member has been removed from the guild
      * @type {boolean}
@@ -74,6 +79,7 @@ class GuildMember extends Base {
     if (typeof data.nick !== 'undefined') this.nickname = data.nick;
 
     if (data.joined_at) this.joinedTimestamp = new Date(data.joined_at).getTime();
+    if (data.premium_since) this.premiumSinceTimestamp = new Date(data.premium_since).getTime();
 
     if (data.user) this.user = this.guild.client.users.add(data.user);
     if (data.roles) this._roles = data.roles;
@@ -131,6 +137,15 @@ class GuildMember extends Base {
     return this.joinedTimestamp ? new Date(this.joinedTimestamp) : null;
   }
 
+  /**
+   * The time of when the member used their Nitro boost on the guild, if it was used
+   * @type {?Date}
+   * @readonly
+   */
+  get premiumSince() {
+    return this.premiumSinceTimestamp ? new Date(this.premiumSinceTimestamp) : null;
+  }
+
   /**
    * The presence of this guild member
    * @type {Presence}
diff --git a/src/util/Constants.js b/src/util/Constants.js
index 31f7a8909..a036fb4f0 100644
--- a/src/util/Constants.js
+++ b/src/util/Constants.js
@@ -375,6 +375,10 @@ exports.WSEvents = keyMirror([
  * * CHANNEL_ICON_CHANGE
  * * PINS_ADD
  * * GUILD_MEMBER_JOIN
+ * * USER_PREMIUM_GUILD_SUBSCRIPTION
+ * * USER_PREMIUM_GUILD_SUBSCRIPTION_TIER_1
+ * * USER_PREMIUM_GUILD_SUBSCRIPTION_TIER_2
+ * * USER_PREMIUM_GUILD_SUBSCRIPTION_TIER_3
  * @typedef {string} MessageType
  */
 exports.MessageTypes = [
@@ -386,6 +390,10 @@ exports.MessageTypes = [
   'CHANNEL_ICON_CHANGE',
   'PINS_ADD',
   'GUILD_MEMBER_JOIN',
+  'USER_PREMIUM_GUILD_SUBSCRIPTION',
+  'USER_PREMIUM_GUILD_SUBSCRIPTION_TIER_1',
+  'USER_PREMIUM_GUILD_SUBSCRIPTION_TIER_2',
+  'USER_PREMIUM_GUILD_SUBSCRIPTION_TIER_3',
 ];
 
 /**
diff --git a/typings/index.d.ts b/typings/index.d.ts
index 5e077f2b6..c56bfb0e7 100644
--- a/typings/index.d.ts
+++ b/typings/index.d.ts
@@ -427,6 +427,8 @@ declare module 'discord.js' {
 		public readonly nameAcronym: string;
 		public readonly owner: GuildMember | null;
 		public ownerID: Snowflake;
+		public premiumSubscriptionCount: number | null;
+		public premiumTier: PremiumTier;
 		public presences: PresenceStore;
 		public region: string;
 		public roles: RoleStore;
@@ -551,6 +553,7 @@ declare module 'discord.js' {
 		constructor(client: Client, data: object, guild: Guild);
 		private _roles: string[];
 
+		public available: boolean;
 		public deleted: boolean;
 		public guild: Guild;
 		public managed: boolean;
@@ -579,6 +582,8 @@ declare module 'discord.js' {
 		public nickname: string;
 		public readonly partial: boolean;
 		public readonly permissions: Readonly<Permissions>;
+		public readonly premiumSince: Date | null;
+		public premiumSinceTimestamp: number | null;
 		public readonly presence: Presence;
 		public roles: GuildMemberRoleStore;
 		public user: User;
@@ -2039,7 +2044,11 @@ declare module 'discord.js' {
 		| 'CHANNEL_NAME_CHANGE'
 		| 'CHANNEL_ICON_CHANGE'
 		| 'PINS_ADD'
-		| 'GUILD_MEMBER_JOIN';
+		| 'GUILD_MEMBER_JOIN'
+		| 'USER_PREMIUM_GUILD_SUBSCRIPTION'
+		| 'USER_PREMIUM_GUILD_SUBSCRIPTION_TIER_1'
+		| 'USER_PREMIUM_GUILD_SUBSCRIPTION_TIER_2'
+		| 'USER_PREMIUM_GUILD_SUBSCRIPTION_TIER_3';
 
 	interface OverwriteData {
 		allow?: PermissionResolvable;
@@ -2099,6 +2108,8 @@ declare module 'discord.js' {
 		id: UserResolvable | RoleResolvable;
 	}
 
+	type PremiumTier = number;
+
 	interface PresenceData {
 		status?: PresenceStatusData;
 		afk?: boolean;