diff --git a/composer.json b/composer.json
index 148e470f8..35200cdca 100644
--- a/composer.json
+++ b/composer.json
@@ -5,7 +5,7 @@
   "homepage": "http://drupal.org/project/graphql",
   "license": "GPL-2.0+",
   "require": {
-    "webonyx/graphql-php": "^0.12.5"
+    "webonyx/graphql-php": "^15.4.0"
   },
   "minimum-stability": "dev"
 }
diff --git a/graphql.info.yml b/graphql.info.yml
index 75ee8d428..ba8a6bc86 100644
--- a/graphql.info.yml
+++ b/graphql.info.yml
@@ -3,4 +3,4 @@ type: module
 description: 'Base module for integrating GraphQL with Drupal.'
 package: GraphQL
 configure: graphql.config_page
-core_version_requirement: ^8.8 || ^9
+core_version_requirement: ^8.8 || ^9 || ^10
diff --git a/graphql.libraries.yml b/graphql.libraries.yml
index 8e9dd9c69..0653ae802 100644
--- a/graphql.libraries.yml
+++ b/graphql.libraries.yml
@@ -9,7 +9,7 @@ explorer:
   dependencies:
     - core/drupal
     - core/jquery
-    - core/jquery.once
+    - core/once
 
 voyager:
   version: VERSION
@@ -23,4 +23,4 @@ voyager:
   dependencies:
     - core/drupal
     - core/jquery
-    - core/jquery.once
+    - core/once
diff --git a/modules/graphql_core/graphql_core.info.yml b/modules/graphql_core/graphql_core.info.yml
index 162f971c8..755b9e070 100644
--- a/modules/graphql_core/graphql_core.info.yml
+++ b/modules/graphql_core/graphql_core.info.yml
@@ -2,6 +2,6 @@ name: GraphQL Core
 type: module
 description: 'Provides type system plugins and derivers on behalf of core modules.'
 package: GraphQL
-core_version_requirement: ^8.8 || ^9
+core_version_requirement: ^8 || ^9 || ^10
 dependencies:
   - graphql:graphql
diff --git a/src/GraphQL/Execution/QueryProcessor.php b/src/GraphQL/Execution/QueryProcessor.php
index fb2ad50fc..7d15d0ea6 100644
--- a/src/GraphQL/Execution/QueryProcessor.php
+++ b/src/GraphQL/Execution/QueryProcessor.php
@@ -28,6 +28,8 @@
 use GraphQL\Validator\ValidationContext;
 use GraphQL\Validator\Rules\QueryComplexity;
 use Symfony\Component\HttpFoundation\RequestStack;
+use GraphQL\Validator\Rules\ValidationRule;
+use GraphQL\Validator\QueryValidationContext;
 
 // TODO: Refactor this and clean it up.
 class QueryProcessor {
@@ -154,8 +156,8 @@ protected function executeOperationWithReporting(PromiseAdapter $adapter, Server
         $result->setErrorsHandler($config->getErrorsHandler());
       }
 
-      if ($config->getErrorFormatter() || $config->getDebug()) {
-        $result->setErrorFormatter(FormattedError::prepareFormatter($config->getErrorFormatter(), $config->getDebug()));
+      if ($config->getErrorFormatter() || $config->getDebugFlag()) {
+        $result->setErrorFormatter(FormattedError::prepareFormatter($config->getErrorFormatter(), $config->getDebugFlag()));
       }
 
       return $result;
@@ -194,13 +196,13 @@ protected function executeOperation(PromiseAdapter $adapter, ServerConfig $confi
       // only work through POST requests. One cannot have mutations and queries
       // in the same document, hence this check is sufficient.
       $operation = $params->operation;
-      $type = AST::getOperation($document, $operation);
-      if ($params->isReadOnly() && $type !== 'query') {
+      $type = AST::getOperationAST($document, $operation);
+      if ($params->readOnly && $type !== 'query') {
         throw new RequestError('GET requests are only supported for query operations.');
       }
 
       // Only queries can be cached (mutations and subscriptions can't).
-      if ($type === 'query') {
+      if ($type->operation === 'query') {
         return $this->executeCacheableOperation($adapter, $config, $params, $document, !$persisted);
       }
 
@@ -230,7 +232,7 @@ protected function executeOperation(PromiseAdapter $adapter, ServerConfig $confi
    */
   protected function executeCacheableOperation(PromiseAdapter $adapter, ServerConfig $config, OperationParams $params, DocumentNode $document, $validate = TRUE) {
     $contextCacheId = 'ccid:' . $this->cacheIdentifier($params, $document);
-    if (!$config->getDebug() && $contextCache = $this->cacheBackend->get($contextCacheId)) {
+    if (!$config->getDebugFlag() && $contextCache = $this->cacheBackend->get($contextCacheId)) {
       $contexts = $contextCache->data ?: [];
       $cid = 'cid:' . $this->cacheIdentifier($params, $document, $contexts);
       if ($cache = $this->cacheBackend->get($cid)) {
@@ -350,14 +352,14 @@ protected function validateOperation(ServerConfig $config, OperationParams $para
 
     $schema = $config->getSchema();
     $info = new TypeInfo($schema);
-    $validation = new ValidationContext($schema, $document, $info);
-    $visitors = array_values(array_map(function (AbstractValidationRule $rule) use ($validation, $params) {
+    $validation = new QueryValidationContext($schema, $document, $info);
+    $visitors = array_values(array_map(function (ValidationRule $rule) use ($validation, $params) {
       // Set current variable values for QueryComplexity validation rule case
       // @see \GraphQL\GraphQL::promiseToExecute for equivalent
       if ($rule instanceof QueryComplexity && !empty($params->variables)) {
         $rule->setRawVariableValues($params->variables);
       }
-      return $rule($validation);
+      return $rule->getVisitor($validation);
     }, $rules));
 
     // Run the query visitor with the prepared validation rules and the cache
@@ -432,7 +434,7 @@ protected function resolveValidationRules(ServerConfig $config, OperationParams
    * @throws \GraphQL\Server\RequestError
    */
   protected function loadPersistedQuery(ServerConfig $config, OperationParams $params) {
-    if (!$loader = $config->getPersistentQueryLoader()) {
+    if (!$loader = $config->getPersistedQueryLoader()) {
       throw new RequestError('Persisted queries are not supported by this server.');
     }
 
diff --git a/src/Plugin/GraphQL/Schemas/SchemaPluginBase.php b/src/Plugin/GraphQL/Schemas/SchemaPluginBase.php
index dc60dd9d9..87889351f 100644
--- a/src/Plugin/GraphQL/Schemas/SchemaPluginBase.php
+++ b/src/Plugin/GraphQL/Schemas/SchemaPluginBase.php
@@ -286,9 +286,9 @@ public function getServer() {
       return array_values(DocumentValidator::defaultRules());
     });
 
-    $config->setPersistentQueryLoader([$this->queryProvider, 'getQuery']);
+    $config->setPersistedQueryLoader([$this->queryProvider, 'getQuery']);
     $config->setQueryBatching(TRUE);
-    $config->setDebug(!!$this->parameters['development']);
+    $config->setDebugFlag(!!$this->parameters['development']);
     $config->setSchema($this->getSchema());
 
     // Always log the errors.
diff --git a/src/Plugin/TypePluginManagerAggregator.php b/src/Plugin/TypePluginManagerAggregator.php
index fc8f3b9d1..7ac8d491b 100644
--- a/src/Plugin/TypePluginManagerAggregator.php
+++ b/src/Plugin/TypePluginManagerAggregator.php
@@ -46,7 +46,8 @@ public function getTypeManager($type) {
   /**
    * {@inheritdoc}
    */
+  #[\ReturnTypeWillChange]
   public function getIterator() {
     return new \ArrayIterator($this->pluginManagers);
   }
-}
\ No newline at end of file
+}