diff --git a/app/Models/RclMessage.php b/app/Models/RclMessage.php
index e1b3f41..5a613e1 100644
--- a/app/Models/RclMessage.php
+++ b/app/Models/RclMessage.php
@@ -141,9 +141,9 @@ public function prunable(): Builder
      *
      * @var string[]
      */
-    protected $dates = [
-        'request_time',
-        'edit_lock_time',
+    protected $casts = [
+        'request_time' => 'datetime',
+        'edit_lock_time' => 'datetime',
     ];
 
     /**
diff --git a/app/Models/Track.php b/app/Models/Track.php
index 8a4c79a..5827052 100644
--- a/app/Models/Track.php
+++ b/app/Models/Track.php
@@ -44,12 +44,11 @@ class Track extends Model
         'identifier', 'active', 'last_routeing', 'valid_from', 'valid_to', 'last_active', 'concorde',
     ];
 
-    protected $dates = [
-        'valid_to', 'valid_from', 'last_active',
-    ];
-
     protected $casts = [
         'active' => 'bool',
+        'valid_to' => 'datetime',
+        'valid_from' => 'datetime',
+        'last_active' => 'datetime',
     ];
 
     /**