diff --git a/composer.json b/composer.json
index 4ad1ae6120..3aa6d157cf 100644
--- a/composer.json
+++ b/composer.json
@@ -92,7 +92,7 @@
         "chillerlan/php-qrcode": "4.3.*",
         "adhocore/jwt": "1.1.*",
         "spomky-labs/otphp": "11.*",
-        "webonyx/graphql-php": "14.11.*",
+        "webonyx/graphql-php": "15.31.*",
         "league/csv": "9.14.*",
         "enshrined/svg-sanitize": "0.22.*"
     },
diff --git a/composer.lock b/composer.lock
index 84febe60a8..0a327117e5 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "4fb974e9843f6104e40396e7cad4a833",
+    "content-hash": "f6a87c1012b316e614258f8f57a28e48",
     "packages": [
         {
             "name": "adhocore/jwt",
@@ -5381,38 +5381,48 @@
         },
         {
             "name": "webonyx/graphql-php",
-            "version": "v14.11.10",
+            "version": "v15.31.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/webonyx/graphql-php.git",
-                "reference": "d9c2fdebc6aa01d831bc2969da00e8588cffef19"
+                "reference": "089c4ef7e112df85788cfe06596278a8f99f4aa9"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/webonyx/graphql-php/zipball/d9c2fdebc6aa01d831bc2969da00e8588cffef19",
-                "reference": "d9c2fdebc6aa01d831bc2969da00e8588cffef19",
+                "url": "https://api.github.com/repos/webonyx/graphql-php/zipball/089c4ef7e112df85788cfe06596278a8f99f4aa9",
+                "reference": "089c4ef7e112df85788cfe06596278a8f99f4aa9",
                 "shasum": ""
             },
             "require": {
                 "ext-json": "*",
                 "ext-mbstring": "*",
-                "php": "^7.1 || ^8"
+                "php": "^7.4 || ^8"
             },
             "require-dev": {
-                "amphp/amp": "^2.3",
-                "doctrine/coding-standard": "^6.0",
-                "nyholm/psr7": "^1.2",
+                "amphp/amp": "^2.6",
+                "amphp/http-server": "^2.1",
+                "dms/phpunit-arraysubset-asserts": "dev-master",
+                "ergebnis/composer-normalize": "^2.28",
+                "friendsofphp/php-cs-fixer": "3.94.2",
+                "mll-lab/php-cs-fixer-config": "5.13.0",
+                "nyholm/psr7": "^1.5",
                 "phpbench/phpbench": "^1.2",
-                "phpstan/extension-installer": "^1.0",
-                "phpstan/phpstan": "0.12.82",
-                "phpstan/phpstan-phpunit": "0.12.18",
-                "phpstan/phpstan-strict-rules": "0.12.9",
-                "phpunit/phpunit": "^7.2 || ^8.5",
-                "psr/http-message": "^1.0",
-                "react/promise": "2.*",
-                "simpod/php-coveralls-mirror": "^3.0"
+                "phpstan/extension-installer": "^1.1",
+                "phpstan/phpstan": "2.1.46",
+                "phpstan/phpstan-phpunit": "2.0.16",
+                "phpstan/phpstan-strict-rules": "2.0.10",
+                "phpunit/phpunit": "^9.5 || ^10.5.21 || ^11",
+                "psr/http-message": "^1 || ^2",
+                "react/http": "^1.6",
+                "react/promise": "^2.0 || ^3.0",
+                "rector/rector": "^2.0",
+                "symfony/polyfill-php81": "^1.23",
+                "symfony/var-exporter": "^5 || ^6 || ^7 || ^8",
+                "thecodingmachine/safe": "^1.3 || ^2 || ^3",
+                "ticketswap/phpstan-error-formatter": "1.3.0"
             },
             "suggest": {
+                "amphp/http-server": "To leverage async resolving with webserver on AMPHP platform",
                 "psr/http-message": "To use standard GraphQL server",
                 "react/promise": "To leverage async resolving on React PHP platform"
             },
@@ -5434,15 +5444,19 @@
             ],
             "support": {
                 "issues": "https://github.com/webonyx/graphql-php/issues",
-                "source": "https://github.com/webonyx/graphql-php/tree/v14.11.10"
+                "source": "https://github.com/webonyx/graphql-php/tree/v15.31.5"
             },
             "funding": [
+                {
+                    "url": "https://github.com/spawnia",
+                    "type": "github"
+                },
                 {
                     "url": "https://opencollective.com/webonyx-graphql-php",
                     "type": "open_collective"
                 }
             ],
-            "time": "2023-07-05T14:23:37+00:00"
+            "time": "2026-04-11T18:06:15+00:00"
         }
     ],
     "packages-dev": [
diff --git a/src/Appwrite/GraphQL/Exception.php b/src/Appwrite/GraphQL/Exception.php
index 71e8bcd8e6..1c42ed2e72 100644
--- a/src/Appwrite/GraphQL/Exception.php
+++ b/src/Appwrite/GraphQL/Exception.php
@@ -11,9 +11,4 @@ class Exception extends AppwriteException implements ClientAware
     {
         return true;
     }
-
-    public function getCategory(): string
-    {
-        return 'appwrite';
-    }
 }
diff --git a/src/Appwrite/GraphQL/Promises/Adapter.php b/src/Appwrite/GraphQL/Promises/Adapter.php
index 86270f2a8b..e3baf949eb 100644
--- a/src/Appwrite/GraphQL/Promises/Adapter.php
+++ b/src/Appwrite/GraphQL/Promises/Adapter.php
@@ -73,16 +73,16 @@ abstract class Adapter implements PromiseAdapter
     /**
      * Create a new promise that is rejected with the given reason.
      *
-     * @param mixed $reason
+     * @param \Throwable $reason
      * @return GQLPromise
      */
-    abstract public function createRejected(mixed $reason): GQLPromise;
+    abstract public function createRejected(\Throwable $reason): GQLPromise;
 
     /**
      * Create a new promise that resolves when all passed in promises resolve.
      *
-     * @param array $promisesOrValues
+     * @param iterable $promisesOrValues
      * @return GQLPromise
      */
-    abstract public function all(array $promisesOrValues): GQLPromise;
+    abstract public function all(iterable $promisesOrValues): GQLPromise;
 }
diff --git a/src/Appwrite/GraphQL/Promises/Adapter/Swoole.php b/src/Appwrite/GraphQL/Promises/Adapter/Swoole.php
index efe6eb2f50..fddfd3ecaa 100644
--- a/src/Appwrite/GraphQL/Promises/Adapter/Swoole.php
+++ b/src/Appwrite/GraphQL/Promises/Adapter/Swoole.php
@@ -26,7 +26,7 @@ class Swoole extends Adapter
         return new GQLPromise($promise, $this);
     }
 
-    public function createRejected($reason): GQLPromise
+    public function createRejected(\Throwable $reason): GQLPromise
     {
         $promise = new SwoolePromise(function ($resolve, $reject) use ($reason) {
             $reject($reason);
@@ -35,7 +35,7 @@ class Swoole extends Adapter
         return new GQLPromise($promise, $this);
     }
 
-    public function all(array $promisesOrValues): GQLPromise
+    public function all(iterable $promisesOrValues): GQLPromise
     {
         return new GQLPromise(SwoolePromise::all($promisesOrValues), $this);
     }
diff --git a/src/Appwrite/GraphQL/Types/Assoc.php b/src/Appwrite/GraphQL/Types/Assoc.php
index f76b23dd7a..180e4865e8 100644
--- a/src/Appwrite/GraphQL/Types/Assoc.php
+++ b/src/Appwrite/GraphQL/Types/Assoc.php
@@ -3,14 +3,21 @@
 namespace Appwrite\GraphQL\Types;
 
 use GraphQL\Language\AST\Node;
+use GraphQL\Language\AST\StringValueNode;
+use GraphQL\Type\Definition\ScalarType;
 
 // https://github.com/webonyx/graphql-php/issues/129#issuecomment-309366803
 class Assoc extends Json
 {
-    public $name = 'Assoc';
-    public $description = 'The `Assoc` scalar type represents associative array values.';
+    public function __construct()
+    {
+        ScalarType::__construct([
+            'name' => 'Assoc',
+            'description' => 'The `Assoc` scalar type represents associative array values.',
+        ]);
+    }
 
-    public function serialize($value)
+    public function serialize($value): mixed
     {
         if (\is_string($value)) {
             return $value;
@@ -19,7 +26,7 @@ class Assoc extends Json
         return \json_encode($value);
     }
 
-    public function parseValue($value)
+    public function parseValue($value): mixed
     {
         if (\is_array($value)) {
             return $value;
@@ -28,8 +35,12 @@ class Assoc extends Json
         return \json_decode($value, true);
     }
 
-    public function parseLiteral(Node $valueNode, ?array $variables = null)
+    public function parseLiteral(Node $valueNode, ?array $variables = null): mixed
     {
-        return \json_decode($valueNode->value, true);
+        if ($valueNode instanceof StringValueNode) {
+            return \json_decode($valueNode->value, true);
+        }
+
+        return parent::parseLiteral($valueNode, $variables);
     }
 }
diff --git a/src/Appwrite/GraphQL/Types/InputFile.php b/src/Appwrite/GraphQL/Types/InputFile.php
index 39fd4e23b3..8517a82c91 100644
--- a/src/Appwrite/GraphQL/Types/InputFile.php
+++ b/src/Appwrite/GraphQL/Types/InputFile.php
@@ -8,21 +8,25 @@ use GraphQL\Type\Definition\ScalarType;
 
 class InputFile extends ScalarType
 {
-    public $name = 'InputFile';
-    public $description = 'The `InputFile` special type represents a file to be uploaded in the same HTTP request as specified by
- [graphql-multipart-request-spec](https://github.com/jaydenseric/graphql-multipart-request-spec).';
+    public function __construct()
+    {
+        parent::__construct([
+            'name' => 'InputFile',
+            'description' => 'The `InputFile` special type represents a file to be uploaded in the same HTTP request as specified by [graphql-multipart-request-spec](https://github.com/jaydenseric/graphql-multipart-request-spec).',
+        ]);
+    }
 
-    public function serialize($value)
+    public function serialize($value): mixed
     {
         return '';
     }
 
-    public function parseValue($value)
+    public function parseValue($value): mixed
     {
         return $value;
     }
 
-    public function parseLiteral(Node $valueNode, ?array $variables = null)
+    public function parseLiteral(Node $valueNode, ?array $variables = null): mixed
     {
         throw new Error('`InputFile` cannot be hardcoded in query, be sure to conform to GraphQL multipart request specification. Instead got: ' . $valueNode->kind, $valueNode);
     }
diff --git a/src/Appwrite/GraphQL/Types/Json.php b/src/Appwrite/GraphQL/Types/Json.php
index 18d27322a1..002e804e14 100644
--- a/src/Appwrite/GraphQL/Types/Json.php
+++ b/src/Appwrite/GraphQL/Types/Json.php
@@ -14,21 +14,25 @@ use GraphQL\Type\Definition\ScalarType;
 // https://github.com/webonyx/graphql-php/issues/129#issuecomment-309366803
 class Json extends ScalarType
 {
-    public $name = 'Json';
-    public $description = 'The `JSON` scalar type represents JSON values as specified by
-        [ECMA-404](https://www.ecma-international.org/publications/files/ECMA-ST/ECMA-404.pdf).';
+    public function __construct()
+    {
+        parent::__construct([
+            'name' => 'Json',
+            'description' => 'The `JSON` scalar type represents JSON values as specified by [ECMA-404](https://www.ecma-international.org/publications/files/ECMA-ST/ECMA-404.pdf).',
+        ]);
+    }
 
-    public function serialize($value)
+    public function serialize($value): mixed
     {
         return $value;
     }
 
-    public function parseValue($value)
+    public function parseValue($value): mixed
     {
         return $value;
     }
 
-    public function parseLiteral(Node $valueNode, ?array $variables = null)
+    public function parseLiteral(Node $valueNode, ?array $variables = null): mixed
     {
         switch ($valueNode) {
             case $valueNode instanceof StringValueNode:
@@ -45,7 +49,7 @@ class Json extends ScalarType
                 }
                 return $value;
             case ($valueNode instanceof ListValueNode):
-                return array_map([$this, 'parseLiteral'], $valueNode->values);
+                return array_map([$this, 'parseLiteral'], iterator_to_array($valueNode->values));
             default:
                 return null;
         }