diff --git a/config/schema/sessions.sql b/config/schema/sessions.sql
index 1aa0a0f54e..bdfdea04f7 100644
--- a/config/schema/sessions.sql
+++ b/config/schema/sessions.sql
@@ -12,4 +12,4 @@ CREATE TABLE `sessions` (
   `data` blob DEFAULT NULL, -- for PostgreSQL use bytea instead of blob
   `expires` int(10) unsigned DEFAULT NULL,
   PRIMARY KEY (`id`)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;