diff --git a/.gitignore b/.gitignore
index fa07e1e1f..5fbd1c946 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,4 +3,4 @@ composer.lock
 composer.phar
 phpcs.xml
 phpstan.neon
-vendor/
+vendor/
\ No newline at end of file
diff --git a/src/Type/Definition/FieldArgument.php b/src/Type/Definition/FieldArgument.php
index 33cad0d81..6510e0d91 100644
--- a/src/Type/Definition/FieldArgument.php
+++ b/src/Type/Definition/FieldArgument.php
@@ -8,6 +8,7 @@
 use GraphQL\Language\AST\InputValueDefinitionNode;
 use GraphQL\Utils\Utils;
 use function is_array;
+use function is_callable;
 use function is_string;
 use function sprintf;
 
@@ -66,12 +67,21 @@ public function __construct(array $def)
     }
 
     /**
-     * @param mixed[] $config
+     * @param mixed[]|callable $config
      *
      * @return FieldArgument[]
+     * @throws \InvalidArgumentException
      */
-    public static function createMap(array $config)
+    public static function createMap($config)
     {
+        if (is_callable($config)) {
+            $config = $config();
+        }
+
+        if (! is_array($config)) {
+            throw new \InvalidArgumentException('$config must be an array or a callable which returns such an array.');
+        }
+
         $map = [];
         foreach ($config as $name => $argConfig) {
             if (! is_array($argConfig)) {
diff --git a/src/Type/Definition/FieldDefinition.php b/src/Type/Definition/FieldDefinition.php
index 34ad66f3f..521bd5770 100644
--- a/src/Type/Definition/FieldDefinition.php
+++ b/src/Type/Definition/FieldDefinition.php
@@ -109,9 +109,9 @@ public static function defineFieldMap(Type $type, $fields)
 
                     $field['name'] = $name;
                 }
-                if (isset($field['args']) && ! is_array($field['args'])) {
+                if (isset($field['args']) && ! is_array($field['args']) && ! is_callable($field['args'])) {
                     throw new InvariantViolation(
-                        sprintf('%s.%s args must be an array.', $type->name, $name)
+                        sprintf('%s.%s args must be an array or a callable which returns such an array.', $type->name, $name)
                     );
                 }
                 $fieldDef = self::create($field);