diff --git a/composer.json b/composer.json
index e4b84b7..7acc847 100644
--- a/composer.json
+++ b/composer.json
@@ -17,6 +17,6 @@
 		{ "type": "git", "url": "https://github.com/chrisboulton/php-resque" }
 	],
 	"require": {
-		"chrisboulton/php-resque": "< 1.3"
+		"chrisboulton/php-resque": "dev-master"
 	}
-}
\ No newline at end of file
+}
diff --git a/lib/ResqueScheduler.php b/lib/ResqueScheduler.php
index d744c5b..644ba4b 100644
--- a/lib/ResqueScheduler.php
+++ b/lib/ResqueScheduler.php
@@ -223,7 +223,7 @@ public static function nextDelayedTimestamp($at = null)
 			$at = self::getTimestamp($at);
 		}
 	
-		$items = Resque::redis()->zrangebyscore('delayed_queue_schedule', '-inf', $at, 'LIMIT', 0, 1);
+		$items = Resque::redis()->zrangebyscore('delayed_queue_schedule', '-inf', $at, array('limit' => array(0, 1)));
 		if (!empty($items)) {
 			return $items[0];
 		}
diff --git a/resque-scheduler.php b/resque-scheduler.php
index a7d1763..e061f0e 100644
--- a/resque-scheduler.php
+++ b/resque-scheduler.php
@@ -15,8 +15,12 @@
 require_once dirname(__FILE__) . '/lib/ResqueScheduler/Worker.php';
 
 $REDIS_BACKEND = getenv('REDIS_BACKEND');
+$REDIS_BACKEND_DB = getenv('REDIS_BACKEND_DB');
 if(!empty($REDIS_BACKEND)) {
-	Resque::setBackend($REDIS_BACKEND);
+	if (empty($REDIS_BACKEND_DB)) 
+		Resque::setBackend($REDIS_BACKEND);
+	else
+		Resque::setBackend($REDIS_BACKEND, $REDIS_BACKEND_DB);
 }
 
 // Set log level for resque-scheduler
@@ -48,6 +52,12 @@
 	require_once $APP_INCLUDE;
 }
 
+$PREFIX = getenv('PREFIX');
+if(!empty($PREFIX)) {
+    fwrite(STDOUT, '*** Prefix set to '.$PREFIX."\n");
+    Resque_Redis::prefix($PREFIX);
+}
+
 $worker = new ResqueScheduler_Worker();
 $worker->logLevel = $logLevel;
 
@@ -58,4 +68,4 @@
 }
 
 fwrite(STDOUT, "*** Starting scheduler worker\n");
-$worker->work($interval);
\ No newline at end of file
+$worker->work($interval);