diff --git a/src/Appwrite/GraphQL/Types/InputFile.php b/src/Appwrite/GraphQL/Types/InputFile.php
index 17ee6a0061..c10591ef57 100644
--- a/src/Appwrite/GraphQL/Types/InputFile.php
+++ b/src/Appwrite/GraphQL/Types/InputFile.php
@@ -16,7 +16,7 @@ class InputFile extends ScalarType
 
     public function serialize($value)
     {
-        throw new InvariantViolation('`InputFile` cannot be serialized');
+        return '';
     }
 
     public function parseValue($value)
diff --git a/src/Appwrite/GraphQL/Types/Json.php b/src/Appwrite/GraphQL/Types/Json.php
index c430543c9b..2ebf2d39b0 100644
--- a/src/Appwrite/GraphQL/Types/Json.php
+++ b/src/Appwrite/GraphQL/Types/Json.php
@@ -21,12 +21,12 @@ class Json extends ScalarType
 
     public function serialize($value)
     {
-        return $this->identity($value);
+        return \json_encode($value);
     }
 
     public function parseValue($value)
     {
-        return $this->identity($value);
+        return \json_decode($value, associative: true);
     }
 
     public function parseLiteral(Node $valueNode, ?array $variables = null)
@@ -51,9 +51,4 @@ class Json extends ScalarType
                 return null;
         }
     }
-
-    private function identity($value)
-    {
-        return $value;
-    }
 }