diff --git a/app/init.php b/app/init.php
index d4a3dce8fa..b9918574bc 100644
--- a/app/init.php
+++ b/app/init.php
@@ -164,7 +164,7 @@ $register->set('statsd', function () { // Register DB connection
 });
 $register->set('cache', function () { // Register cache connection
     $redis = new Redis();
-    $redis->pconnect(App::getEnv('_APP_REDIS_HOST', ''),
+    $redis->pconnect(App::getEnv('_APP_REDIS_HOST', '', 2.5),
         App::getEnv('_APP_REDIS_PORT', ''));
 
     return $redis;