diff --git a/index.php b/index.php
index dd787d2f..7ebb6fd2 100644
--- a/index.php
+++ b/index.php
@@ -546,10 +546,17 @@ private function getUpdateServerResponse(): array {
 	 *
 	 * @throws \Exception
 	 */
-	public function downloadUpdate(): void {
+	public function downloadUpdate(?string $url = null): void {
 		$this->silentLog('[info] downloadUpdate()');
 
-		$downloadURLs = $this->getDownloadURLs();
+		if ($url) {
+			// If a URL is provided, use it directly
+			$downloadURLs = [$url];
+		} else {
+			// Otherwise, get the download URLs from the update server
+			$downloadURLs = $this->getDownloadURLs();
+		}
+
 		$this->silentLog('[info] will try to download archive from: ' . implode(', ', $downloadURLs));
 
 		$storageLocation = $this->getUpdateDirectoryLocation() . '/updater-' . $this->getConfigOptionMandatoryString('instanceid') . '/downloads/';
@@ -743,7 +750,7 @@ private function getDownloadedFilePath(): string {
 	 *
 	 * @throws \Exception
 	 */
-	public function verifyIntegrity(): void {
+	public function verifyIntegrity(?string $urlOverride = null): void {
 		$this->silentLog('[info] verifyIntegrity()');
 
 		if ($this->getCurrentReleaseChannel() === 'daily') {
@@ -751,6 +758,11 @@ public function verifyIntegrity(): void {
 			return;
 		}
 
+		if ($urlOverride) {
+			$this->silentLog('[info] custom download url provided, cannot verify signature');
+			return;
+		}
+
 		$response = $this->getUpdateServerResponse();
 		if (empty($response['signature'])) {
 			throw new \Exception('No signature specified for defined update');
diff --git a/lib/UpdateCommand.php b/lib/UpdateCommand.php
index 718f224b..9a410ad5 100644
--- a/lib/UpdateCommand.php
+++ b/lib/UpdateCommand.php
@@ -21,6 +21,7 @@ class UpdateCommand extends Command {
 	protected bool $shouldStop = false;
 	protected bool $skipBackup = false;
 	protected bool $skipUpgrade = false;
+	protected string $urlOverride = '';
 
 	/** @var list<string> strings of text for stages of updater */
 	protected array $checkTexts = [
@@ -45,7 +46,8 @@ protected function configure(): void {
 			->setDescription('Updates the code of an Nextcloud instance')
 			->setHelp("This command fetches the latest code that is announced via the updater server and safely replaces the existing code with the new one.")
 			->addOption('no-backup', null, InputOption::VALUE_NONE, 'Skip backup of current Nextcloud version')
-			->addOption('no-upgrade', null, InputOption::VALUE_NONE, "Don't automatically run occ upgrade");
+			->addOption('no-upgrade', null, InputOption::VALUE_NONE, "Don't automatically run occ upgrade")
+			->addOption('url', null, InputOption::VALUE_OPTIONAL, 'The URL of the Nextcloud release to download');
 	}
 
 	public static function getUpdaterVersion(): string {
@@ -60,6 +62,7 @@ public static function getUpdaterVersion(): string {
 	protected function execute(InputInterface $input, OutputInterface $output) {
 		$this->skipBackup = (bool)$input->getOption('no-backup');
 		$this->skipUpgrade = (bool)$input->getOption('no-upgrade');
+		$this->urlOverride = (string)$input->getOption('url');
 
 		$version = static::getUpdaterVersion();
 		$output->writeln('Nextcloud Updater - version: ' . $version);
@@ -133,7 +136,12 @@ protected function execute(InputInterface $input, OutputInterface $output) {
 		$output->writeln('Current version is ' . $this->updater->getCurrentVersion() . '.');
 
 		// needs to be called that early because otherwise updateAvailable() returns false
-		$updateString = $this->updater->checkForUpdate();
+		if ($this->urlOverride) {
+			$this->updater->log('[info] Using URL override: ' . $this->urlOverride);
+			$updateString = 'Update check forced with URL override: ' . $this->urlOverride;
+		} else {
+			$updateString = $this->updater->checkForUpdate();
+		}
 
 		$output->writeln('');
 
@@ -146,9 +154,11 @@ protected function execute(InputInterface $input, OutputInterface $output) {
 
 		$output->writeln('');
 
-		if (!$this->updater->updateAvailable() && $stepNumber === 0) {
-			$output->writeln('Nothing to do.');
-			return 0;
+		if (!$this->urlOverride) {
+			if (!$this->updater->updateAvailable() && $stepNumber === 0) {
+				$output->writeln('Nothing to do.');
+				return 0;
+			}
 		}
 
 		$questionText = 'Start update';
@@ -360,10 +370,10 @@ protected function executeStep(int $step): array {
 					}
 					break;
 				case 4:
-					$this->updater->downloadUpdate();
+					$this->updater->downloadUpdate($this->urlOverride);
 					break;
 				case 5:
-					$this->updater->verifyIntegrity();
+					$this->updater->verifyIntegrity($this->urlOverride);
 					break;
 				case 6:
 					$this->updater->extractDownload();
diff --git a/lib/Updater.php b/lib/Updater.php
index 70f06bcc..87fa4698 100644
--- a/lib/Updater.php
+++ b/lib/Updater.php
@@ -508,10 +508,17 @@ private function getUpdateServerResponse(): array {
 	 *
 	 * @throws \Exception
 	 */
-	public function downloadUpdate(): void {
+	public function downloadUpdate(?string $url = null): void {
 		$this->silentLog('[info] downloadUpdate()');
 
-		$downloadURLs = $this->getDownloadURLs();
+		if ($url) {
+			// If a URL is provided, use it directly
+			$downloadURLs = [$url];
+		} else {
+			// Otherwise, get the download URLs from the update server
+			$downloadURLs = $this->getDownloadURLs();
+		}
+
 		$this->silentLog('[info] will try to download archive from: ' . implode(', ', $downloadURLs));
 
 		$storageLocation = $this->getUpdateDirectoryLocation() . '/updater-' . $this->getConfigOptionMandatoryString('instanceid') . '/downloads/';
@@ -705,7 +712,7 @@ private function getDownloadedFilePath(): string {
 	 *
 	 * @throws \Exception
 	 */
-	public function verifyIntegrity(): void {
+	public function verifyIntegrity(?string $urlOverride = null): void {
 		$this->silentLog('[info] verifyIntegrity()');
 
 		if ($this->getCurrentReleaseChannel() === 'daily') {
@@ -713,6 +720,11 @@ public function verifyIntegrity(): void {
 			return;
 		}
 
+		if ($urlOverride) {
+			$this->silentLog('[info] custom download url provided, cannot verify signature');
+			return;
+		}
+
 		$response = $this->getUpdateServerResponse();
 		if (empty($response['signature'])) {
 			throw new \Exception('No signature specified for defined update');
diff --git a/updater.phar b/updater.phar
index ab9b1183..1081ba2f 100755
Binary files a/updater.phar and b/updater.phar differ
diff --git a/vendor/composer/installed.php b/vendor/composer/installed.php
index 480c81a8..2658558b 100644
--- a/vendor/composer/installed.php
+++ b/vendor/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'bbd6e8e521f3fd1d02d34e3c9eda83c4c8d4c460',
+        'reference' => 'd57261832b96a413d7ae92aa66ac15054ae8f4d5',
         'type' => 'library',
         'install_path' => __DIR__ . '/../../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'bbd6e8e521f3fd1d02d34e3c9eda83c4c8d4c460',
+            'reference' => 'd57261832b96a413d7ae92aa66ac15054ae8f4d5',
             'type' => 'library',
             'install_path' => __DIR__ . '/../../',
             'aliases' => array(),