diff --git a/lib/class.ISPConfig.inc.php b/lib/class.ISPConfig.inc.php
index bc41c2a70d64e6b9e51eeac41df03a5ac8055b80..0b219b52b8009029985779d53174c81101344905 100644
--- a/lib/class.ISPConfig.inc.php
+++ b/lib/class.ISPConfig.inc.php
@@ -157,6 +157,14 @@ class ISPConfig {
 		}
 	}
 
+	public static function wantsUnbound() {
+		if(isset($_GET['use-unbound']) && $_GET['use-unbound']) {
+			return true;
+		} else {
+			return false;
+		}
+	}
+
 	public static function wantsAmavis() {
 		if(isset($_GET['use-amavis']) && $_GET['use-amavis']) {
 			return true;
@@ -215,6 +223,7 @@ Possible arguments are:
 	--interactive	->Don\'t install ISPConfig in non-interactive mode. This is needed if you want to use expert mode, e. g. to install a slave server that shall be integrated into an existing multiserver setup.
 	--use-nginx		->Use nginx webserver instead of apache2
 	--use-amavis	->Use amavis instead of rspamd for mail filtering
+	--use-unbound	->Use unbound instead of bind9 for local resolving. Only allowed if --no-dns is set.
 	--use-php		->Use specific PHP version instead of installing multiple PHP, e.g. --use-php=7.3 (5.6, 7.0, 7.1, 7.2 and 7.3 available).
 					->--use-php=system disables the sury repository and just installs the system\'s default PHP version.
 					->CURRENTLY ONLY EITHER --use-php=system OR OMITTING THE ARGUMENT (use all versions) IS SUPPORTED!
diff --git a/lib/os/class.ISPConfigDebianOS.inc.php b/lib/os/class.ISPConfigDebianOS.inc.php
index ac5dc276183b9fd7d0a427605822f998abaa22fd..0b08196730afc41069c3a0d15406d68dee1263a3 100644
--- a/lib/os/class.ISPConfigDebianOS.inc.php
+++ b/lib/os/class.ISPConfigDebianOS.inc.php
@@ -123,7 +123,11 @@ class ISPConfigDebianOS extends ISPConfigBaseOS {
 			);
 
 			if(ISPConfig::shallInstall('local-dns')) {
-				$packages[] = 'bind9';
+				if(ISPConfig::wantsUnbound()) {
+					$packages[] = 'unbound';
+				} else {
+					$packages[] = 'bind9';
+				}
 			}
 
 			if(ISPConfig::shallInstall('mail')) {
@@ -405,6 +409,11 @@ mailman-unsubscribe:  "|/var/lib/mailman/mail/mailman unsubscribe mailman"';
 			return false;
 		}
 
+		if(ISPConfig::wantsUnbound() && ISPConfig::shallInstall('dns')) {
+			ISPConfigLog::error('You can only use --use-unbound together with --no-dns as ISPConfig requires Bind when dns is enabled.');
+			return false;
+		}
+
 		$this->configureApt();
 		$this->updatePackageList();
 
@@ -707,8 +716,13 @@ mailman-unsubscribe:  "|/var/lib/mailman/mail/mailman unsubscribe mailman"';
 			$this->stopService('rspamd');
 		}
 
-		ISPConfigLog::info('(Re)starting Bind.', true);
-		$this->restartService('bind9');
+		if(ISPConfig::wantsUnbound()) {
+			ISPConfigLog::info('(Re)starting unbound.', true);
+			$this->restartService('unbound');
+		} else {
+			ISPConfigLog::info('(Re)starting Bind.', true);
+			$this->restartService('bind9');
+		}
 
 		ISPConfigLog::info('Disabling spamassassin daemon.', true);
 		$this->stopService('spamassassin');
@@ -1216,7 +1230,11 @@ mailman-unsubscribe:  "|/var/lib/mailman/mail/mailman unsubscribe mailman"';
 		);
 
 		if(ISPConfig::shallInstall('local-dns')) {
-			$check_services[] = 'bind9';
+			if(ISPConfig::wantsUnbound()) {
+				$check_services[] = 'unbound';
+			} else {
+				$check_services[] = 'bind9';
+			}
 		}
 		if(ISPConfig::shallInstall('web')) {
 			$check_services[] = 'pureftpd';