diff --git a/src/Discord.Net.Core/Entities/Guilds/AutoModeration/AutoModTriggerType.cs b/src/Discord.Net.Core/Entities/Guilds/AutoModeration/AutoModTriggerType.cs
index 8922d697a..0c3eb2322 100644
--- a/src/Discord.Net.Core/Entities/Guilds/AutoModeration/AutoModTriggerType.cs
+++ b/src/Discord.Net.Core/Entities/Guilds/AutoModeration/AutoModTriggerType.cs
@@ -12,23 +12,28 @@ namespace Discord
     public enum AutoModTriggerType
     {
         /// <summary>
-        ///     Check if content contains words from a user defined list of keywords
+        ///     Check if content contains words from a user defined list of keywords.
         /// </summary>
         Keyword = 1,
 
         /// <summary>
-        ///     Check if content contains any harmful links
+        ///     Check if content contains any harmful links.
         /// </summary>
         HarmfulLink = 2,
 
         /// <summary>
-        ///     Check if content represents generic spam
+        ///     Check if content represents generic spam.
         /// </summary>
         Spam = 3,
 
         /// <summary>
-        ///     Check if content contains words from internal pre-defined wordsets
+        ///     Check if content contains words from internal pre-defined wordsets.
         /// </summary>
         KeywordPreset = 4,
+
+        /// <summary>
+        ///     Check if content contains more unique mentions than allowed.
+        /// </summary>
+        MentionSpam = 5,
     }
 }
diff --git a/src/Discord.Net.Core/Entities/Guilds/AutoModeration/IAutoModRule.cs b/src/Discord.Net.Core/Entities/Guilds/AutoModeration/IAutoModRule.cs
index b28cc7c05..cf51bab3f 100644
--- a/src/Discord.Net.Core/Entities/Guilds/AutoModeration/IAutoModRule.cs
+++ b/src/Discord.Net.Core/Entities/Guilds/AutoModeration/IAutoModRule.cs
@@ -45,6 +45,24 @@ namespace Discord
         /// </remarks>
         public IReadOnlyCollection<string> KeywordFilter { get; }
 
+        /// <summary>
+        ///     Gets regex patterns for this rule.
+        /// </summary>
+        /// <remarks>
+        ///     This collection will be empty if <see cref="TriggerType"/> is not
+        ///     <see cref="AutoModTriggerType.Keyword"/>.
+        /// </remarks>
+        public IReadOnlyCollection<string> RegexPatterns { get; }
+
+        /// <summary>
+        ///     Gets the allow list patterns for this rule.
+        /// </summary>
+        /// <remarks>
+        ///     This collection will be empty if <see cref="TriggerType"/> is not
+        ///     <see cref="AutoModTriggerType.Keyword"/>.
+        /// </remarks>
+        public IReadOnlyCollection<string> AllowList { get; }
+
         /// <summary>
         ///     Gets the preset keyword types for this rule.
         /// </summary>
@@ -54,6 +72,15 @@ namespace Discord
         /// </remarks>
         public IReadOnlyCollection<KeywordPresetTypes> Presets { get; }
 
+        /// <summary>
+        ///     Gets the total mention limit for this rule.
+        /// </summary>
+        /// <remarks>
+        ///     This collection will be empty if <see cref="TriggerType"/> is not
+        ///     <see cref="AutoModTriggerType.MentionSpam"/>.
+        /// </remarks>
+        public int MentionTotalLimit { get; }
+
         /// <summary>
         ///     Gets a collection of actions that will be preformed if a user breaks this rule.
         /// </summary>
diff --git a/src/Discord.Net.Rest/API/Common/TriggerMetadata.cs b/src/Discord.Net.Rest/API/Common/TriggerMetadata.cs
index c10108459..6b4aa0a66 100644
--- a/src/Discord.Net.Rest/API/Common/TriggerMetadata.cs
+++ b/src/Discord.Net.Rest/API/Common/TriggerMetadata.cs
@@ -12,7 +12,16 @@ namespace Discord.API
         [JsonProperty("keyword_filter")]
         public string[] KeywordFilter { get; set; }
 
+        [JsonProperty("regex_patterns")]
+        public string[] RegexPatterns { get; set; }
+
         [JsonProperty("presets")]
         public KeywordPresetTypes[] Presets { get; set; }
+
+        [JsonProperty("allow_list")]
+        public string[] AllowList { get; set; }
+
+        [JsonProperty("mention_total_limit")]
+        public int MentionLimit { get; set; }
     }
 }
diff --git a/src/Discord.Net.Rest/Entities/Guilds/GuildHelper.cs b/src/Discord.Net.Rest/Entities/Guilds/GuildHelper.cs
index 468ce5e79..3a01adc95 100644
--- a/src/Discord.Net.Rest/Entities/Guilds/GuildHelper.cs
+++ b/src/Discord.Net.Rest/Entities/Guilds/GuildHelper.cs
@@ -1062,7 +1062,7 @@ namespace Discord.Rest
         #endregion
 
         #region Auto Mod
-        public static Task ModifyRuleAsync(BaseDiscordClient client, IAutoModRule rule, Action<AutoModRuleProperties> func, RequestOptions options)
+        public static Task<AutoModerationRule> ModifyRuleAsync(BaseDiscordClient client, IAutoModRule rule, Action<AutoModRuleProperties> func, RequestOptions options)
         {
             var args = new AutoModRuleProperties();
             func(args);
diff --git a/src/Discord.Net.WebSocket/Entities/Guilds/SocketAutoModRule.cs b/src/Discord.Net.WebSocket/Entities/Guilds/SocketAutoModRule.cs
index 5dab651f8..78b0572ae 100644
--- a/src/Discord.Net.WebSocket/Entities/Guilds/SocketAutoModRule.cs
+++ b/src/Discord.Net.WebSocket/Entities/Guilds/SocketAutoModRule.cs
@@ -33,12 +33,21 @@ namespace Discord.WebSocket
         /// <inheritdoc/>
         public IReadOnlyCollection<string> KeywordFilter { get; private set; }
 
+        /// <inheritdoc/>
+        public IReadOnlyCollection<string> RegexPatterns { get; private set; }
+
+        /// <inheritdoc/>
+        public IReadOnlyCollection<string> AllowList { get; private set; }
+
         /// <inheritdoc/>
         public IReadOnlyCollection<KeywordPresetTypes> Presets { get; private set; }
 
         /// <inheritdoc/>
         public IReadOnlyCollection<AutoModRuleAction> Actions { get; private set; }
 
+        /// <inheritdoc/>
+        public int MentionTotalLimit { get; private set; }
+
         /// <inheritdoc/>
         public bool Enabled { get; private set; }
 
@@ -80,6 +89,9 @@ namespace Discord.WebSocket
             TriggerType = model.TriggerType;
             KeywordFilter = model.TriggerMetadata.KeywordFilter.ToImmutableArray();
             Presets = model.TriggerMetadata.Presets.ToImmutableArray();
+            RegexPatterns = model.TriggerMetadata.RegexPatterns.ToImmutableArray();
+            AllowList = model.TriggerMetadata.AllowList.ToImmutableArray();
+            MentionTotalLimit = model.TriggerMetadata.MentionLimit;
             Actions = model.Actions.Select(x => new AutoModRuleAction(x.Type, x.Metadata.GetValueOrDefault()?.ChannelId.ToNullable(), x.Metadata.GetValueOrDefault()?.DurationSeconds.ToNullable())).ToImmutableArray();
             Enabled = model.Enabled;
             ExemptRoles = model.ExemptRoles.Select(x => Guild.GetRole(x)).ToImmutableArray();