diff --git a/Mist/Commands/Download/DownloadFirmwareOptions.swift b/Mist/Commands/Download/DownloadFirmwareOptions.swift
index ab86c28..d57b640 100644
--- a/Mist/Commands/Download/DownloadFirmwareOptions.swift
+++ b/Mist/Commands/Download/DownloadFirmwareOptions.swift
@@ -11,12 +11,13 @@ struct DownloadFirmwareOptions: ParsableArguments {
     @Argument(help: """
     Specify a macOS name, version or build to download:
 
-    Name               │ Version │ Build
-    ───────────────────┼─────────┼──────
-    macOS Sonoma       │ 14.x    │ 23xyz
-    macOS Ventura      │ 13.x    │ 22xyz
-    macOS Monterey     │ 12.x    │ 21xyz
-    macOS Big Sur      │ 11.x    │ 20xyz
+    Name           │ Version │ Build
+    ───────────────┼─────────┼──────
+    macOS Sequoia  | 15.x    │ 24xyz
+    macOS Sonoma   │ 14.x    │ 23xyz
+    macOS Ventura  │ 13.x    │ 22xyz
+    macOS Monterey │ 12.x    │ 21xyz
+    macOS Big Sur  │ 11.x    │ 20xyz
 
     Note: Specifying a macOS name will assume the latest version and build of that particular macOS.
     Note: Specifying a macOS version will look for an exact match, otherwise assume the latest build of that particular macOS.
diff --git a/Mist/Commands/Download/DownloadInstallerOptions.swift b/Mist/Commands/Download/DownloadInstallerOptions.swift
index d84d314..9e318d7 100644
--- a/Mist/Commands/Download/DownloadInstallerOptions.swift
+++ b/Mist/Commands/Download/DownloadInstallerOptions.swift
@@ -13,6 +13,7 @@ struct DownloadInstallerOptions: ParsableArguments {
 
     Name               │ Version │ Build
     ───────────────────┼─────────┼──────
+    macOS Sequoia      │ 15.x    │ 24xyz
     macOS Sonoma       │ 14.x    │ 23xyz
     macOS Ventura      │ 13.x    │ 22xyz
     macOS Monterey     │ 12.x    │ 21xyz
diff --git a/Mist/Commands/List/ListFirmwareOptions.swift b/Mist/Commands/List/ListFirmwareOptions.swift
index 713961a..02e21e0 100644
--- a/Mist/Commands/List/ListFirmwareOptions.swift
+++ b/Mist/Commands/List/ListFirmwareOptions.swift
@@ -11,12 +11,13 @@ struct ListFirmwareOptions: ParsableArguments {
     @Argument(help: """
     Optionally specify a macOS name, version or build to filter the list results:
 
-    Name               │ Version │ Build
-    ───────────────────┼─────────┼──────
-    macOS Sonoma       │ 14.x    │ 23xyz
-    macOS Ventura      │ 13.x    │ 22xyz
-    macOS Monterey     │ 12.x    │ 21xyz
-    macOS Big Sur      │ 11.x    │ 20xyz
+    Name           │ Version │ Build
+    ───────────────┼─────────┼──────
+    macOS Sequoia  │ 15.x    │ 24xyz
+    macOS Sonoma   │ 14.x    │ 23xyz
+    macOS Ventura  │ 13.x    │ 22xyz
+    macOS Monterey │ 12.x    │ 21xyz
+    macOS Big Sur  │ 11.x    │ 20xyz
 
     Note: Specifying a macOS name will assume the latest version and build of that particular macOS.
     Note: Specifying a macOS version will look for an exact match, otherwise assume the latest build of that particular macOS.
diff --git a/Mist/Commands/List/ListInstallerOptions.swift b/Mist/Commands/List/ListInstallerOptions.swift
index bf1c40a..453742d 100644
--- a/Mist/Commands/List/ListInstallerOptions.swift
+++ b/Mist/Commands/List/ListInstallerOptions.swift
@@ -13,6 +13,7 @@ struct ListInstallerOptions: ParsableArguments {
 
     Name               │ Version │ Build
     ───────────────────┼─────────┼──────
+    macOS Sequoia      │ 15.x    │ 24xyz
     macOS Sonoma       │ 14.x    │ 23xyz
     macOS Ventura      │ 13.x    │ 22xyz
     macOS Monterey     │ 12.x    │ 21xyz
diff --git a/Mist/Helpers/Downloader.swift b/Mist/Helpers/Downloader.swift
index 331ca7f..a909d66 100644
--- a/Mist/Helpers/Downloader.swift
+++ b/Mist/Helpers/Downloader.swift
@@ -9,7 +9,7 @@ import Foundation
 
 /// Helper Class used to download macOS Firmwares and Installers.
 class Downloader: NSObject {
-    private static let maximumWidth: Int = 80
+    private static let maximumWidth: Int = 95
     private var temporaryURL: URL?
     private var sourceURL: URL?
     private var current: Int64 = 0
diff --git a/Mist/Model/Catalog.swift b/Mist/Model/Catalog.swift
index b98051d..33ec2f5 100644
--- a/Mist/Model/Catalog.swift
+++ b/Mist/Model/Catalog.swift
@@ -12,7 +12,7 @@ enum Catalog: String, CaseIterable {
     case `public`
 
     static var urls: [String] {
-        allCases.map(\.url)
+        allCases.map(\.url) + allCases.map(\.sequioaURL)
     }
 
     var url: String {
@@ -27,4 +27,17 @@ enum Catalog: String, CaseIterable {
             "https://swscan.apple.com/content/catalogs/others/index-14beta-14-13-12-10.16-10.15-10.14-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz"
         }
     }
+
+    private var sequioaURL: String {
+        switch self {
+        case .standard:
+            "https://swscan.apple.com/content/catalogs/others/index-15-14-13-12-10.16-10.15-10.14-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz"
+        case .customer: // swiftlint:disable:next line_length
+            "https://swscan.apple.com/content/catalogs/others/index-15customerseed-15-14-13-12-10.16-10.15-10.14-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz"
+        case .developer:
+            "https://swscan.apple.com/content/catalogs/others/index-15seed-15-14-13-12-10.16-10.15-10.14-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz"
+        case .public:
+            "https://swscan.apple.com/content/catalogs/others/index-15beta-15-14-13-12-10.16-10.15-10.14-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz"
+        }
+    }
 }
diff --git a/Mist/Model/Firmware.swift b/Mist/Model/Firmware.swift
index 6f2bffc..b431ae5 100644
--- a/Mist/Model/Firmware.swift
+++ b/Mist/Model/Firmware.swift
@@ -29,7 +29,9 @@ struct Firmware: Decodable {
     var name: String {
         var name: String = ""
 
-        if version.range(of: "^14", options: .regularExpression) != nil {
+        if version.range(of: "^15", options: .regularExpression) != nil {
+            name = "macOS Sequoia"
+        } else if version.range(of: "^14", options: .regularExpression) != nil {
             name = "macOS Sonoma"
         } else if version.range(of: "^13", options: .regularExpression) != nil {
             name = "macOS Ventura"