diff --git a/lib/Doctrine/DBAL/Logging/DebugStack.php b/lib/Doctrine/DBAL/Logging/DebugStack.php
index e1ccaad6ba0..1895dde5381 100644
--- a/lib/Doctrine/DBAL/Logging/DebugStack.php
+++ b/lib/Doctrine/DBAL/Logging/DebugStack.php
@@ -12,7 +12,7 @@ class DebugStack implements SQLLogger
     /**
      * Executed SQL queries.
      *
-     * @var mixed[][]
+     * @var array<int, array<string, mixed>>
      */
     public $queries = [];