diff --git a/CHANGELOG.md b/CHANGELOG.md
index 12b1f5983..91f6a2d27 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -43,6 +43,8 @@
 - Minor: Migrated /clear command to Helix API. (#3994)
 - Minor: Migrated /color command to Helix API. (#3988)
 - Minor: Migrated /delete command to Helix API. (#3999)
+- Minor: Migrated /emoteonly command to Helix API. (#4015)
+- Minor: Migrated /emoteonlyoff command to Helix API. (#4015)
 - Minor: Migrated /mod command to Helix API. (#4000)
 - Minor: Migrated /unmod command to Helix API. (#4001)
 - Minor: Migrated /vip command to Helix API. (#4010)
diff --git a/src/controllers/commands/CommandController.cpp b/src/controllers/commands/CommandController.cpp
index f29684a60..9c4298a55 100644
--- a/src/controllers/commands/CommandController.cpp
+++ b/src/controllers/commands/CommandController.cpp
@@ -2105,6 +2105,122 @@ void CommandController::initialize(Settings &, Paths &paths)
 
             return "";
         });  // /raid
+
+    const auto formatChatSettingsError =
+        [](const HelixUpdateChatSettingsError error, const QString &message) {
+            QString errorMessage = QString("Failed to update - ");
+            using Error = HelixUpdateChatSettingsError;
+            switch (error)
+            {
+                case Error::UserMissingScope: {
+                    // TODO(pajlada): Phrase MISSING_REQUIRED_SCOPE
+                    errorMessage += "Missing required scope. "
+                                    "Re-login with your "
+                                    "account and try again.";
+                }
+                break;
+
+                case Error::UserNotAuthorized: {
+                    // TODO(pajlada): Phrase MISSING_PERMISSION
+                    errorMessage += "You don't have permission to "
+                                    "perform that action.";
+                }
+                break;
+
+                case Error::Ratelimited: {
+                    errorMessage += "You are being ratelimited by Twitch. Try "
+                                    "again in a few seconds.";
+                }
+                break;
+
+                case Error::Forwarded: {
+                    errorMessage = message;
+                }
+                break;
+
+                case Error::Unknown:
+                default: {
+                    errorMessage += "An unknown error has occurred.";
+                }
+                break;
+            }
+            return errorMessage;
+        };
+
+    this->registerCommand("/emoteonly", [formatChatSettingsError](
+                                            const QStringList & /* words */,
+                                            auto channel) {
+        auto currentUser = getApp()->accounts->twitch.getCurrent();
+        if (currentUser->isAnon())
+        {
+            channel->addMessage(makeSystemMessage(
+                "You must be logged in to update chat settings!"));
+            return "";
+        }
+
+        auto *twitchChannel = dynamic_cast<TwitchChannel *>(channel.get());
+        if (twitchChannel == nullptr)
+        {
+            channel->addMessage(makeSystemMessage(
+                "The /emoteonly command only works in Twitch channels"));
+            return "";
+        }
+
+        if (twitchChannel->accessRoomModes()->emoteOnly)
+        {
+            channel->addMessage(
+                makeSystemMessage("This room is already in emote-only mode."));
+            return "";
+        }
+
+        getHelix()->updateEmoteMode(
+            twitchChannel->roomId(), currentUser->getUserId(), true,
+            [](auto) {
+                //we'll get a message from irc
+            },
+            [channel, formatChatSettingsError](auto error, auto message) {
+                channel->addMessage(
+                    makeSystemMessage(formatChatSettingsError(error, message)));
+            });
+        return "";
+    });
+
+    this->registerCommand(
+        "/emoteonlyoff", [formatChatSettingsError](
+                             const QStringList & /* words */, auto channel) {
+            auto currentUser = getApp()->accounts->twitch.getCurrent();
+            if (currentUser->isAnon())
+            {
+                channel->addMessage(makeSystemMessage(
+                    "You must be logged in to update chat settings!"));
+                return "";
+            }
+            auto *twitchChannel = dynamic_cast<TwitchChannel *>(channel.get());
+            if (twitchChannel == nullptr)
+            {
+                channel->addMessage(makeSystemMessage(
+                    "The /emoteonlyoff command only works in Twitch channels"));
+                return "";
+            }
+
+            if (!twitchChannel->accessRoomModes()->emoteOnly)
+            {
+                channel->addMessage(
+                    makeSystemMessage("This room is not in emote-only mode."));
+                return "";
+            }
+
+            getHelix()->updateEmoteMode(
+                twitchChannel->roomId(), currentUser->getUserId(), false,
+                [](auto) {
+                    // we'll get a message from irc
+                },
+                [channel, formatChatSettingsError](auto error, auto message) {
+                    channel->addMessage(makeSystemMessage(
+                        formatChatSettingsError(error, message)));
+                });
+            return "";
+        });
 }
 
 void CommandController::save()
diff --git a/src/providers/twitch/api/Helix.cpp b/src/providers/twitch/api/Helix.cpp
index f385be8be..53225c0b0 100644
--- a/src/providers/twitch/api/Helix.cpp
+++ b/src/providers/twitch/api/Helix.cpp
@@ -1530,6 +1530,170 @@ void Helix::startRaid(
         .execute();
 }
 
+void Helix::updateEmoteMode(
+    QString broadcasterID, QString moderatorID, bool emoteMode,
+    ResultCallback<HelixChatSettings> successCallback,
+    FailureCallback<HelixUpdateChatSettingsError, QString> failureCallback)
+{
+    QJsonObject json;
+    json["emote_mode"] = emoteMode;
+    this->updateChatSettings(broadcasterID, moderatorID, json, successCallback,
+                             failureCallback);
+}
+
+void Helix::updateFollowerMode(
+    QString broadcasterID, QString moderatorID,
+    boost::optional<int> followerModeDuration,
+    ResultCallback<HelixChatSettings> successCallback,
+    FailureCallback<HelixUpdateChatSettingsError, QString> failureCallback)
+{
+    QJsonObject json;
+    json["follower_mode"] = followerModeDuration.has_value();
+    if (followerModeDuration)
+    {
+        json["follower_mode_duration"] = *followerModeDuration;
+    }
+
+    this->updateChatSettings(broadcasterID, moderatorID, json, successCallback,
+                             failureCallback);
+}
+
+void Helix::updateNonModeratorChatDelay(
+    QString broadcasterID, QString moderatorID,
+    boost::optional<int> nonModeratorChatDelayDuration,
+    ResultCallback<HelixChatSettings> successCallback,
+    FailureCallback<HelixUpdateChatSettingsError, QString> failureCallback)
+{
+    QJsonObject json;
+    json["non_moderator_chat_delay"] =
+        nonModeratorChatDelayDuration.has_value();
+    if (nonModeratorChatDelayDuration)
+    {
+        json["non_moderator_chat_delay_duration"] =
+            *nonModeratorChatDelayDuration;
+    }
+
+    this->updateChatSettings(broadcasterID, moderatorID, json, successCallback,
+                             failureCallback);
+}
+
+void Helix::updateSlowMode(
+    QString broadcasterID, QString moderatorID,
+    boost::optional<int> slowModeWaitTime,
+    ResultCallback<HelixChatSettings> successCallback,
+    FailureCallback<HelixUpdateChatSettingsError, QString> failureCallback)
+{
+    QJsonObject json;
+    json["slow_mode"] = slowModeWaitTime.has_value();
+    if (slowModeWaitTime)
+    {
+        json["slow_mode_wait_time"] = *slowModeWaitTime;
+    }
+
+    this->updateChatSettings(broadcasterID, moderatorID, json, successCallback,
+                             failureCallback);
+}
+
+void Helix::updateSubscriberMode(
+    QString broadcasterID, QString moderatorID, bool subscriberMode,
+    ResultCallback<HelixChatSettings> successCallback,
+    FailureCallback<HelixUpdateChatSettingsError, QString> failureCallback)
+{
+    QJsonObject json;
+    json["subscriber_mode"] = subscriberMode;
+    this->updateChatSettings(broadcasterID, moderatorID, json, successCallback,
+                             failureCallback);
+}
+
+void Helix::updateUniqueChatMode(
+    QString broadcasterID, QString moderatorID, bool uniqueChatMode,
+    ResultCallback<HelixChatSettings> successCallback,
+    FailureCallback<HelixUpdateChatSettingsError, QString> failureCallback)
+{
+    QJsonObject json;
+    json["unique_chat_mode"] = uniqueChatMode;
+    this->updateChatSettings(broadcasterID, moderatorID, json, successCallback,
+                             failureCallback);
+}
+
+void Helix::updateChatSettings(
+    QString broadcasterID, QString moderatorID, QJsonObject payload,
+    ResultCallback<HelixChatSettings> successCallback,
+    FailureCallback<HelixUpdateChatSettingsError, QString> failureCallback)
+{
+    using Error = HelixUpdateChatSettingsError;
+
+    QUrlQuery urlQuery;
+
+    urlQuery.addQueryItem("broadcaster_id", broadcasterID);
+    urlQuery.addQueryItem("moderator_id", moderatorID);
+
+    this->makeRequest("chat/settings", urlQuery)
+        .type(NetworkRequestType::Patch)
+        .header("Content-Type", "application/json")
+        .payload(QJsonDocument(payload).toJson(QJsonDocument::Compact))
+        .onSuccess([successCallback](auto result) -> Outcome {
+            if (result.status() != 200)
+            {
+                qCWarning(chatterinoTwitch)
+                    << "Success result for updating chat settings was"
+                    << result.status() << "but we expected it to be 200";
+            }
+            auto response = result.parseJson();
+            successCallback(HelixChatSettings(
+                response.value("data").toArray().first().toObject()));
+            return Success;
+        })
+        .onError([failureCallback](auto result) {
+            auto obj = result.parseJson();
+            auto message = obj.value("message").toString();
+
+            switch (result.status())
+            {
+                case 400:
+                case 409:
+                case 422:
+                case 425: {
+                    failureCallback(Error::Forwarded, message);
+                }
+                break;
+
+                case 401: {
+                    if (message.startsWith("Missing scope",
+                                           Qt::CaseInsensitive))
+                    {
+                        // Handle this error specifically because its API error is especially unfriendly
+                        failureCallback(Error::UserMissingScope, message);
+                    }
+                    else
+                    {
+                        failureCallback(Error::Forwarded, message);
+                    }
+                }
+                break;
+
+                case 403: {
+                    failureCallback(Error::UserNotAuthorized, message);
+                }
+                break;
+
+                case 429: {
+                    failureCallback(Error::Ratelimited, message);
+                }
+                break;
+
+                default: {
+                    qCDebug(chatterinoTwitch)
+                        << "Unhandled error updating chat settings:"
+                        << result.status() << result.getData() << obj;
+                    failureCallback(Error::Unknown, message);
+                }
+                break;
+            }
+        })
+        .execute();
+}
+
 NetworkRequest Helix::makeRequest(QString url, QUrlQuery urlQuery)
 {
     assert(!url.startsWith("/"));
diff --git a/src/providers/twitch/api/Helix.hpp b/src/providers/twitch/api/Helix.hpp
index e6e742201..9f9670800 100644
--- a/src/providers/twitch/api/Helix.hpp
+++ b/src/providers/twitch/api/Helix.hpp
@@ -300,6 +300,35 @@ struct HelixChannelEmote {
     }
 };
 
+struct HelixChatSettings {
+    const QString broadcasterId;
+    const bool emoteMode;
+    // boost::none if disabled
+    const boost::optional<int> followerModeDuration;  // time in minutes
+    const boost::optional<int>
+        nonModeratorChatDelayDuration;            // time in seconds
+    const boost::optional<int> slowModeWaitTime;  // time in seconds
+    const bool subscriberMode;
+    const bool uniqueChatMode;
+
+    explicit HelixChatSettings(QJsonObject jsonObject)
+        : broadcasterId(jsonObject.value("broadcaster_id").toString())
+        , emoteMode(jsonObject.value("emote_mode").toBool())
+        , followerModeDuration(boost::make_optional(
+              jsonObject.value("follower_mode").toBool(),
+              jsonObject.value("follower_mode_duration").toInt()))
+        , nonModeratorChatDelayDuration(boost::make_optional(
+              jsonObject.value("non_moderator_chat_delay").toBool(),
+              jsonObject.value("non_moderator_chat_delay_duration").toInt()))
+        , slowModeWaitTime(boost::make_optional(
+              jsonObject.value("slow_mode").toBool(),
+              jsonObject.value("slow_mode_wait_time").toInt()))
+        , subscriberMode(jsonObject.value("subscriber_mode").toBool())
+        , uniqueChatMode(jsonObject.value("unique_chat_mode").toBool())
+    {
+    }
+};
+
 enum class HelixAnnouncementColor {
     Blue,
     Green,
@@ -425,6 +454,16 @@ enum class HelixStartRaidError {  // /raid
     Forwarded,
 };  // /raid
 
+enum class HelixUpdateChatSettingsError {  // update chat settings
+    Unknown,
+    UserMissingScope,
+    UserNotAuthorized,
+    Ratelimited,
+    Forbidden,
+    // The error message is forwarded directly from the Twitch API
+    Forwarded,
+};  // update chat settings
+
 class IHelix
 {
 public:
@@ -607,7 +646,67 @@ public:
         FailureCallback<HelixStartRaidError, QString> failureCallback) = 0;
     // https://dev.twitch.tv/docs/api/reference#start-a-raid
 
+    // Updates the emote mode using
+    // https://dev.twitch.tv/docs/api/reference#update-chat-settings
+    virtual void updateEmoteMode(
+        QString broadcasterID, QString moderatorID, bool emoteMode,
+        ResultCallback<HelixChatSettings> successCallback,
+        FailureCallback<HelixUpdateChatSettingsError, QString>
+            failureCallback) = 0;
+
+    // Updates the follower mode using
+    // https://dev.twitch.tv/docs/api/reference#update-chat-settings
+    virtual void updateFollowerMode(
+        QString broadcasterID, QString moderatorID,
+        boost::optional<int> followerModeDuration,
+        ResultCallback<HelixChatSettings> successCallback,
+        FailureCallback<HelixUpdateChatSettingsError, QString>
+            failureCallback) = 0;
+
+    // Updates the non-moderator chat delay using
+    // https://dev.twitch.tv/docs/api/reference#update-chat-settings
+    virtual void updateNonModeratorChatDelay(
+        QString broadcasterID, QString moderatorID,
+        boost::optional<int> nonModeratorChatDelayDuration,
+        ResultCallback<HelixChatSettings> successCallback,
+        FailureCallback<HelixUpdateChatSettingsError, QString>
+            failureCallback) = 0;
+
+    // Updates the slow mode using
+    // https://dev.twitch.tv/docs/api/reference#update-chat-settings
+    virtual void updateSlowMode(
+        QString broadcasterID, QString moderatorID,
+        boost::optional<int> slowModeWaitTime,
+        ResultCallback<HelixChatSettings> successCallback,
+        FailureCallback<HelixUpdateChatSettingsError, QString>
+            failureCallback) = 0;
+
+    // Updates the subscriber mode using
+    // https://dev.twitch.tv/docs/api/reference#update-chat-settings
+    virtual void updateSubscriberMode(
+        QString broadcasterID, QString moderatorID, bool subscriberMode,
+        ResultCallback<HelixChatSettings> successCallback,
+        FailureCallback<HelixUpdateChatSettingsError, QString>
+            failureCallback) = 0;
+
+    // Updates the unique chat mode using
+    // https://dev.twitch.tv/docs/api/reference#update-chat-settings
+    virtual void updateUniqueChatMode(
+        QString broadcasterID, QString moderatorID, bool uniqueChatMode,
+        ResultCallback<HelixChatSettings> successCallback,
+        FailureCallback<HelixUpdateChatSettingsError, QString>
+            failureCallback) = 0;
+    // https://dev.twitch.tv/docs/api/reference#update-chat-settings
+
     virtual void update(QString clientId, QString oauthToken) = 0;
+
+protected:
+    // https://dev.twitch.tv/docs/api/reference#update-chat-settings
+    virtual void updateChatSettings(
+        QString broadcasterID, QString moderatorID, QJsonObject json,
+        ResultCallback<HelixChatSettings> successCallback,
+        FailureCallback<HelixUpdateChatSettingsError, QString>
+            failureCallback) = 0;
 };
 
 class Helix final : public IHelix
@@ -783,10 +882,68 @@ public:
         FailureCallback<HelixStartRaidError, QString> failureCallback) final;
     // https://dev.twitch.tv/docs/api/reference#start-a-raid
 
+    // Updates the emote mode using
+    // https://dev.twitch.tv/docs/api/reference#update-chat-settings
+    void updateEmoteMode(QString broadcasterID, QString moderatorID,
+                         bool emoteMode,
+                         ResultCallback<HelixChatSettings> successCallback,
+                         FailureCallback<HelixUpdateChatSettingsError, QString>
+                             failureCallback) final;
+
+    // Updates the follower mode using
+    // https://dev.twitch.tv/docs/api/reference#update-chat-settings
+    void updateFollowerMode(
+        QString broadcasterID, QString moderatorID,
+        boost::optional<int> followerModeDuration,
+        ResultCallback<HelixChatSettings> successCallback,
+        FailureCallback<HelixUpdateChatSettingsError, QString> failureCallback)
+        final;
+
+    // Updates the non-moderator chat delay using
+    // https://dev.twitch.tv/docs/api/reference#update-chat-settings
+    void updateNonModeratorChatDelay(
+        QString broadcasterID, QString moderatorID,
+        boost::optional<int> nonModeratorChatDelayDuration,
+        ResultCallback<HelixChatSettings> successCallback,
+        FailureCallback<HelixUpdateChatSettingsError, QString> failureCallback)
+        final;
+
+    // Updates the slow mode using
+    // https://dev.twitch.tv/docs/api/reference#update-chat-settings
+    void updateSlowMode(QString broadcasterID, QString moderatorID,
+                        boost::optional<int> slowModeWaitTime,
+                        ResultCallback<HelixChatSettings> successCallback,
+                        FailureCallback<HelixUpdateChatSettingsError, QString>
+                            failureCallback) final;
+
+    // Updates the subscriber mode using
+    // https://dev.twitch.tv/docs/api/reference#update-chat-settings
+    void updateSubscriberMode(
+        QString broadcasterID, QString moderatorID, bool subscriberMode,
+        ResultCallback<HelixChatSettings> successCallback,
+        FailureCallback<HelixUpdateChatSettingsError, QString> failureCallback)
+        final;
+
+    // Updates the unique chat mode using
+    // https://dev.twitch.tv/docs/api/reference#update-chat-settings
+    void updateUniqueChatMode(
+        QString broadcasterID, QString moderatorID, bool uniqueChatMode,
+        ResultCallback<HelixChatSettings> successCallback,
+        FailureCallback<HelixUpdateChatSettingsError, QString> failureCallback)
+        final;
+
     void update(QString clientId, QString oauthToken) final;
 
     static void initialize();
 
+protected:
+    // https://dev.twitch.tv/docs/api/reference#update-chat-settings
+    void updateChatSettings(
+        QString broadcasterID, QString moderatorID, QJsonObject json,
+        ResultCallback<HelixChatSettings> successCallback,
+        FailureCallback<HelixUpdateChatSettingsError, QString> failureCallback)
+        final;
+
 private:
     NetworkRequest makeRequest(QString url, QUrlQuery urlQuery);
 
diff --git a/src/widgets/splits/SplitHeader.cpp b/src/widgets/splits/SplitHeader.cpp
index d8c02530b..622218d3c 100644
--- a/src/widgets/splits/SplitHeader.cpp
+++ b/src/widgets/splits/SplitHeader.cpp
@@ -2,6 +2,7 @@
 
 #include "Application.hpp"
 #include "controllers/accounts/AccountController.hpp"
+#include "controllers/commands/CommandController.hpp"
 #include "controllers/notifications/NotificationController.hpp"
 #include "providers/twitch/TwitchChannel.hpp"
 #include "providers/twitch/TwitchIrcServer.hpp"
@@ -540,9 +541,14 @@ std::unique_ptr<QMenu> SplitHeader::createChatModeMenu()
             setFollowers->setChecked(roomModes->followerOnly != -1);
         });
 
-    auto toggle = [this](const QString &command, QAction *action) mutable {
-        this->split_->getChannel().get()->sendMessage(
-            command + (action->isChecked() ? "" : "off"));
+    auto execCommand = [this](const QString &command) {
+        auto text = getApp()->getCommands()->execCommand(
+            command, this->split_->getChannel(), false);
+        this->split_->getChannel()->sendMessage(text);
+    };
+    auto toggle = [execCommand](const QString &command,
+                                QAction *action) mutable {
+        execCommand(command + (action->isChecked() ? "" : "off"));
         action->setChecked(!action->isChecked());
     };
 
@@ -556,51 +562,51 @@ std::unique_ptr<QMenu> SplitHeader::createChatModeMenu()
                          toggle("/emoteonly", setEmote);
                      });
 
-    QObject::connect(setSlow, &QAction::triggered, this, [setSlow, this]() {
-        if (!setSlow->isChecked())
-        {
-            this->split_->getChannel().get()->sendMessage("/slowoff");
-            setSlow->setChecked(false);
-            return;
-        };
-        auto ok = bool();
-        auto seconds = QInputDialog::getInt(this, "", "Seconds:", 10, 0, 500, 1,
-                                            &ok, Qt::FramelessWindowHint);
-        if (ok)
-        {
-            this->split_->getChannel().get()->sendMessage(
-                QString("/slow %1").arg(seconds));
-        }
-        else
-        {
-            setSlow->setChecked(false);
-        }
-    });
-
     QObject::connect(
-        setFollowers, &QAction::triggered, this, [setFollowers, this]() {
-            if (!setFollowers->isChecked())
+        setSlow, &QAction::triggered, this, [setSlow, this, execCommand]() {
+            if (!setSlow->isChecked())
             {
-                this->split_->getChannel().get()->sendMessage("/followersoff");
-                setFollowers->setChecked(false);
+                execCommand("/slowoff");
+                setSlow->setChecked(false);
                 return;
             };
             auto ok = bool();
-            auto time = QInputDialog::getText(
-                this, "", "Time:", QLineEdit::Normal, "15m", &ok,
-                Qt::FramelessWindowHint,
-                Qt::ImhLowercaseOnly | Qt::ImhPreferNumbers);
+            auto seconds =
+                QInputDialog::getInt(this, "", "Seconds:", 10, 0, 500, 1, &ok,
+                                     Qt::FramelessWindowHint);
             if (ok)
             {
-                this->split_->getChannel().get()->sendMessage(
-                    QString("/followers %1").arg(time));
+                execCommand(QString("/slow %1").arg(seconds));
             }
             else
             {
-                setFollowers->setChecked(false);
+                setSlow->setChecked(false);
             }
         });
 
+    QObject::connect(setFollowers, &QAction::triggered, this,
+                     [setFollowers, this, execCommand]() {
+                         if (!setFollowers->isChecked())
+                         {
+                             execCommand("/followersoff");
+                             setFollowers->setChecked(false);
+                             return;
+                         };
+                         auto ok = bool();
+                         auto time = QInputDialog::getText(
+                             this, "", "Time:", QLineEdit::Normal, "15m", &ok,
+                             Qt::FramelessWindowHint,
+                             Qt::ImhLowercaseOnly | Qt::ImhPreferNumbers);
+                         if (ok)
+                         {
+                             execCommand(QString("/followers %1").arg(time));
+                         }
+                         else
+                         {
+                             setFollowers->setChecked(false);
+                         }
+                     });
+
     QObject::connect(setR9k, &QAction::triggered, this,
                      [setR9k, toggle]() mutable {
                          toggle("/r9kbeta", setR9k);
diff --git a/tests/src/HighlightController.cpp b/tests/src/HighlightController.cpp
index 0b329be86..1ad014c98 100644
--- a/tests/src/HighlightController.cpp
+++ b/tests/src/HighlightController.cpp
@@ -11,6 +11,7 @@
 #include <QDir>
 #include <QFile>
 #include <QString>
+#include <boost/optional/optional_io.hpp>
 
 using namespace chatterino;
 using ::testing::Exactly;
@@ -281,8 +282,71 @@ public:
          (FailureCallback<HelixStartRaidError, QString> failureCallback)),
         (override));  // /raid
 
+    // The extra parenthesis around the failure callback is because its type contains a comma
+    MOCK_METHOD(void, updateEmoteMode,
+                (QString broadcasterID, QString moderatorID, bool emoteMode,
+                 ResultCallback<HelixChatSettings> successCallback,
+                 (FailureCallback<HelixUpdateChatSettingsError, QString>
+                      failureCallback)),
+                (override));
+
+    // The extra parenthesis around the failure callback is because its type contains a comma
+    MOCK_METHOD(void, updateFollowerMode,
+                (QString broadcasterID, QString moderatorID,
+                 boost::optional<int> followerModeDuration,
+                 ResultCallback<HelixChatSettings> successCallback,
+                 (FailureCallback<HelixUpdateChatSettingsError, QString>
+                      failureCallback)),
+                (override));
+
+    // The extra parenthesis around the failure callback is because its type contains a comma
+    MOCK_METHOD(void, updateNonModeratorChatDelay,
+                (QString broadcasterID, QString moderatorID,
+                 boost::optional<int> nonModeratorChatDelayDuration,
+                 ResultCallback<HelixChatSettings> successCallback,
+                 (FailureCallback<HelixUpdateChatSettingsError, QString>
+                      failureCallback)),
+                (override));
+
+    // The extra parenthesis around the failure callback is because its type contains a comma
+    MOCK_METHOD(void, updateSlowMode,
+                (QString broadcasterID, QString moderatorID,
+                 boost::optional<int> slowModeWaitTime,
+                 ResultCallback<HelixChatSettings> successCallback,
+                 (FailureCallback<HelixUpdateChatSettingsError, QString>
+                      failureCallback)),
+                (override));
+
+    // The extra parenthesis around the failure callback is because its type contains a comma
+    MOCK_METHOD(void, updateSubscriberMode,
+                (QString broadcasterID, QString moderatorID,
+                 bool subscriberMode,
+                 ResultCallback<HelixChatSettings> successCallback,
+                 (FailureCallback<HelixUpdateChatSettingsError, QString>
+                      failureCallback)),
+                (override));
+
+    // The extra parenthesis around the failure callback is because its type contains a comma
+    MOCK_METHOD(void, updateUniqueChatMode,
+                (QString broadcasterID, QString moderatorID,
+                 bool uniqueChatMode,
+                 ResultCallback<HelixChatSettings> successCallback,
+                 (FailureCallback<HelixUpdateChatSettingsError, QString>
+                      failureCallback)),
+                (override));
+    // update chat settings
+
     MOCK_METHOD(void, update, (QString clientId, QString oauthToken),
                 (override));
+
+protected:
+    // The extra parenthesis around the failure callback is because its type contains a comma
+    MOCK_METHOD(void, updateChatSettings,
+                (QString broadcasterID, QString moderatorID, QJsonObject json,
+                 ResultCallback<HelixChatSettings> successCallback,
+                 (FailureCallback<HelixUpdateChatSettingsError, QString>
+                      failureCallback)),
+                (override));
 };
 
 static QString DEFAULT_SETTINGS = R"!(