diff --git a/src/Builder/PayloadBuilder.php b/src/Builder/PayloadBuilder.php
index c4621c2..45edcb0 100644
--- a/src/Builder/PayloadBuilder.php
+++ b/src/Builder/PayloadBuilder.php
@@ -46,7 +46,7 @@ public static function buildCommonAttributes(array $attributes): array
                 return [
                     'DimensionValueType' => 'VARCHAR',
                     'Name' => $key,
-                    'Value' => $value,
+                    'Value' => (string) $value,
                 ];
             })
             ->values()