diff --git a/src/structures/Guild.js b/src/structures/Guild.js
index 972f7b889..0150d6483 100644
--- a/src/structures/Guild.js
+++ b/src/structures/Guild.js
@@ -74,6 +74,7 @@ class Guild {
     }
   }
 
+  /* eslint-disable complexity */
   /**
    * Sets up the guild.
    * @param {*} data The raw data of the guild
@@ -176,6 +177,13 @@ class Guild {
      */
     this.joinedTimestamp = data.joined_at ? new Date(data.joined_at).getTime() : this.joinedTimestamp;
 
+    /**
+     * The value set for a guild's default message notifications
+     * @type {DefaultMessageNotifications|number}
+     */
+    this.defaultMessageNotifications = Constants.DefaultMessageNotifications[data.default_message_notifications] ||
+      data.default_message_notifications;
+
     this.id = data.id;
     this.available = !data.unavailable;
     this.features = data.features || this.features || [];
@@ -688,6 +696,11 @@ class Guild {
     if (typeof data.explicitContentFilter !== 'undefined') {
       _data.explicit_content_filter = Number(data.explicitContentFilter);
     }
+    if (typeof data.defaultMessageNotifications !== 'undefined') {
+      _data.default_message_notifications = typeof data.defaultMessageNotifications === 'string' ?
+        Constants.DefaultMessageNotifications.indexOf(data.defaultMessageNotifications) :
+        Number(data.defaultMessageNotifications);
+    }
     return this.client.rest.methods.updateGuild(this, _data, reason);
   }
 
@@ -701,6 +714,17 @@ class Guild {
     return this.edit({ explicitContentFilter }, reason);
   }
 
+  /* eslint-disable max-len */
+  /**
+   * Edits the setting of the default message notifications of the guild.
+   * @param {DefaultMessageNotifications|number} defaultMessageNotifications The new setting for the default message notifications
+   * @param {string} [reason] Reason for changing the setting of the default message notifications
+   * @returns {Promise<Guild>}
+   */
+  setDefaultMessageNotifications(defaultMessageNotifications, reason) {
+    return this.edit({ defaultMessageNotifications }, reason);
+  }
+
   /**
    * Edit the name of the guild.
    * @param {string} name The new name of the guild
diff --git a/src/util/Constants.js b/src/util/Constants.js
index 48001df86..58760ec3c 100644
--- a/src/util/Constants.js
+++ b/src/util/Constants.js
@@ -815,3 +815,14 @@ exports.APIErrors = {
   INVITE_ACCEPTED_TO_GUILD_NOT_CONTANING_BOT: 50036,
   REACTION_BLOCKED: 90001,
 };
+
+/**
+ * The value set for a guild's default message notifications, e.g. `ALL`. Here are the available types:
+ * * ALL
+ * * MENTIONS
+ * @typedef {string} DefaultMessageNotifications
+ */
+exports.DefaultMessageNotifications = [
+  'ALL',
+  'MENTIONS',
+];