diff --git a/PHPDaemon/Core/Bootstrap.php b/PHPDaemon/Core/Bootstrap.php
index a91e3b37..1834aa1d 100644
--- a/PHPDaemon/Core/Bootstrap.php
+++ b/PHPDaemon/Core/Bootstrap.php
@@ -30,7 +30,7 @@ class Bootstrap {
 	 * @var array
 	 */
 	protected static $commands = [
-		'start', 'stop', 'hardstop', 'update', 'reload', 'restart', 'hardrestart', 'fullstatus', 'status', 'configtest', 'log', 'runworker'
+		'start', 'stop', 'hardstop', 'gracefulstop', 'update', 'reload', 'restart', 'hardrestart', 'fullstatus', 'status', 'configtest', 'log', 'runworker'
 	];
 
 	/**
@@ -427,6 +427,9 @@ public static function init($configFile = null) {
 		elseif ($runmode == 'stop') {
 			Bootstrap::stop();
 		}
+		elseif ($runmode == 'gracefulstop') {
+			Bootstrap::stop(4);
+		}
 		elseif ($runmode == 'hardstop') {
 			echo '[HARDSTOP] Sending SIGINT to ' . Bootstrap::$pid . '... ';
 
@@ -468,7 +471,7 @@ public static function init($configFile = null) {
 	 * @return void
 	 */
 	protected static function printUsage() {
-		echo 'usage: ' . Daemon::$runName . " (start|(hard)stop|update|reload|(hard)restart|fullstatus|status|configtest|log|runworker|help) ...\n";
+		echo 'usage: ' . Daemon::$runName . " (start|(hard|graceful)stop|update|reload|(hard)restart|fullstatus|status|configtest|log|runworker|help) ...\n";
 	}
 
 	/**
@@ -537,7 +540,7 @@ public static function runworker() {
 	 * @return void
 	 */
 	public static function stop($mode = 1) {
-		$ok = Bootstrap::$pid && posix_kill(Bootstrap::$pid, $mode === 3 ? SIGINT : SIGTERM);
+		$ok = Bootstrap::$pid && posix_kill(Bootstrap::$pid, $mode === 3 ? SIGINT : (($mode === 4) ? SIGTSTP : SIGTERM));
 
 		if (!$ok) {
 			echo '[WARN]. It seems that phpDaemon is not running' . (Bootstrap::$pid ? ' (PID ' . Bootstrap::$pid . ')' : '') . ".\n";
diff --git a/PHPDaemon/Thread/Generic.php b/PHPDaemon/Thread/Generic.php
index dce60854..d1cd3230 100644
--- a/PHPDaemon/Thread/Generic.php
+++ b/PHPDaemon/Thread/Generic.php
@@ -75,6 +75,7 @@ abstract class Generic {
 		SIGWINCH  => 'SIGWINCH',
 		SIGUSR1   => 'SIGUSR1',
 		SIGUSR2   => 'SIGUSR2',
+		SIGTSTP	  => 'SIGTSTP',
 	];
 
 	/**
diff --git a/PHPDaemon/Thread/IPC.php b/PHPDaemon/Thread/IPC.php
index 8519984a..3d73d320 100644
--- a/PHPDaemon/Thread/IPC.php
+++ b/PHPDaemon/Thread/IPC.php
@@ -281,6 +281,18 @@ public function sigquit() {
 		parent::sigquit();
 	}
 
+	/**
+	 * Handler of the SIGTSTP (graceful stop) signal in worker process.
+	 * @return void
+	 */
+	protected function sigtstp() {
+		if (Daemon::$config->logsignals->value) {
+			$this->log('Caught SIGTSTP (graceful stop all workers).');
+		}
+
+		$this->shutdown();
+	}
+
 	/**
 	 * Handler of the SIGHUP (reload config) signal in worker process.
 	 * @return void
diff --git a/PHPDaemon/Thread/Master.php b/PHPDaemon/Thread/Master.php
index 5b54295b..9470bf60 100644
--- a/PHPDaemon/Thread/Master.php
+++ b/PHPDaemon/Thread/Master.php
@@ -397,6 +397,19 @@ protected function sigquit() {
 		$this->shutdown(SIGQUIT);
 	}
 
+	/**
+	 * Handler for the SIGTSTP (graceful stop all workers) signal in master process
+	 * @return void
+	 */
+	protected function sigtstp() {
+		if (Daemon::$config->logsignals->value) {
+			$this->log('Caught SIGTSTP (graceful stop all workers).');
+		}
+
+		$this->signalToChildren(SIGTSTP);
+		$this->shutdown(SIGTSTP);
+	}
+
 	/**
 	 * Handler for the SIGHUP (reload config) signal in master process
 	 * @return void
diff --git a/PHPDaemon/Thread/Worker.php b/PHPDaemon/Thread/Worker.php
index a45ea6c5..8ecc5efe 100644
--- a/PHPDaemon/Thread/Worker.php
+++ b/PHPDaemon/Thread/Worker.php
@@ -533,6 +533,17 @@ public function gracefulRestart() {
 		$this->setState($this->state);
 	}
 
+	/**
+	 * Graceful stop
+	 * @return void
+	 */
+	public function gracefulStop() {
+		$this->breakMainLoop = true;
+		$this->graceful = true;
+		$this->reloadTime = microtime(true) + $this->reloadDelay;
+		$this->setState($this->state);
+	}
+
 	/**
 	 * Asks the running applications the whether we can go to shutdown current (old) worker.
 	 * @return boolean - Ready?
@@ -727,6 +738,18 @@ protected function sigusr2() {
 		$this->gracefulRestart();
 	}
 
+	/**
+	 * Handler of the SIGTSTP (graceful stop) signal in worker process.
+	 * @return void
+	 */
+	protected function sigtstp() {
+		if (Daemon::$config->logsignals->value) {
+			$this->log('caught SIGTSTP (graceful stop).');
+		}
+
+		$this->gracefulStop();
+	}
+
 	/**
 	 * Handler of the SIGTTIN signal in worker process.
 	 * @return void