diff --git a/.config/redis.config.php b/.config/redis.config.php
index a5b13da6f..99f498628 100644
--- a/.config/redis.config.php
+++ b/.config/redis.config.php
@@ -6,6 +6,7 @@
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
       'password' => getenv('REDIS_HOST_PASSWORD_FILE') ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
+      'dbindex' => (int) getenv('REDIS_DB_INDEX'),
     ),
   );