diff --git a/Models/CommentListMapper.php b/Models/CommentListMapper.php
index a918a1b..a04d382 100644
--- a/Models/CommentListMapper.php
+++ b/Models/CommentListMapper.php
@@ -34,7 +34,7 @@ class CommentListMapper extends DataMapperAbstract
     /**
      * Columns.
      *
-     * @var array
+     * @var array<string, array<string, string>>
      * @since 1.0.0
      */
     protected static $columns = [
@@ -44,7 +44,7 @@ class CommentListMapper extends DataMapperAbstract
     /**
      * Has many relation.
      *
-     * @var array
+     * @var array<string, array<string, string|null>>
      * @since 1.0.0
      */
     protected static $hasMany = [
diff --git a/Models/CommentMapper.php b/Models/CommentMapper.php
index 8d96ee2..2521f12 100644
--- a/Models/CommentMapper.php
+++ b/Models/CommentMapper.php
@@ -33,7 +33,7 @@ class CommentMapper extends DataMapperAbstract
     /**
      * Columns.
      *
-     * @var array
+     * @var array<string, array<string, string>>
      * @since 1.0.0
      */
     protected static $columns = [