diff --git a/src/Pages/Client.php b/src/Pages/Client.php
index 562b4d0d..8f0bcbc9 100644
--- a/src/Pages/Client.php
+++ b/src/Pages/Client.php
@@ -7,6 +7,7 @@
 use Notion\Infrastructure\Http;
 use Notion\Pages\Properties\CreatedBy;
 use Notion\Pages\Properties\CreatedTime;
+use Notion\Pages\Properties\Formula;
 use Notion\Pages\Properties\LastEditedBy;
 use Notion\Pages\Properties\LastEditedTime;
 use Notion\Pages\Properties\PropertyInterface;
@@ -66,6 +67,7 @@ public function update(Page $page): Page
         $notUpdatableProps = [
             PropertyType::CreatedBy,
             PropertyType::CreatedTime,
+            PropertyType::Formula,
             PropertyType::LastEditedBy,
             PropertyType::LastEditedTime,
             PropertyType::Rollup,