diff --git a/.release.json b/.release.json
index 636173f..3e750b5 100644
--- a/.release.json
+++ b/.release.json
@@ -1,9 +1,9 @@
 {
   "source": {
     "repo_url": "https://github.com/onfido/onfido-openapi-spec",
-    "short_sha": "f5555a0",
-    "long_sha": "f5555a0a68778432f3b4854885b496116ac3730c",
-    "version": "v3.3.1"
+    "short_sha": "a33e3b2",
+    "long_sha": "a33e3b25defea6110ec610051560df2c20bd1f65",
+    "version": "v3.4.0"
   },
-  "release": "v7.3.1"
+  "release": "v7.4.0"
 }
diff --git a/composer.json b/composer.json
index 65c484e..5466766 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
     "name": "onfido/onfido-php",
-    "version": "7.3.1",
+    "version": "7.4.0",
     "description": "The Onfido API (v3.6)",
     "keywords": [
         "openapitools",
diff --git a/composer.lock b/composer.lock
index 57bb865..1ac7133 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": "348abbba8a8089c4afe1ba43b3e63de9",
+    "content-hash": "781717503c9913ac9f719ad45760379b",
     "packages": [
         {
             "name": "guzzlehttp/guzzle",
diff --git a/lib/Configuration.php b/lib/Configuration.php
index 8470c4f..bca3522 100644
--- a/lib/Configuration.php
+++ b/lib/Configuration.php
@@ -87,7 +87,7 @@ class Configuration
      *
      * @var string
      */
-    protected $userAgent = 'onfido-php/7.3.1';
+    protected $userAgent = 'onfido-php/7.4.0';
 
     /**
      * Debug switch (default set to false)
@@ -404,7 +404,7 @@ public static function toDebugReport()
         $report .= '    OS: ' . php_uname() . PHP_EOL;
         $report .= '    PHP Version: ' . PHP_VERSION . PHP_EOL;
         $report .= '    The version of the OpenAPI document: v3.6' . PHP_EOL;
-        $report .= '    SDK Package Version: 7.3.1' . PHP_EOL;
+        $report .= '    SDK Package Version: 7.4.0' . PHP_EOL;
         $report .= '    Temp Folder Path: ' . self::getDefaultConfiguration()->getTempFolderPath() . PHP_EOL;
 
         return $report;
diff --git a/lib/Model/SdkTokenBuilder.php b/lib/Model/SdkTokenBuilder.php
index 5e51c1a..98f3792 100644
--- a/lib/Model/SdkTokenBuilder.php
+++ b/lib/Model/SdkTokenBuilder.php
@@ -73,7 +73,7 @@ class SdkTokenBuilder implements ModelInterface, ArrayAccess, \JsonSerializable
     protected static $openAPIFormats = [
         'applicant_id' => 'uuid',
         'referrer' => null,
-        'application_id' => 'uuid',
+        'application_id' => null,
         'cross_device_url' => null
     ];
 
diff --git a/lib/Model/SdkTokenRequest.php b/lib/Model/SdkTokenRequest.php
index 41f28e0..cb7af56 100644
--- a/lib/Model/SdkTokenRequest.php
+++ b/lib/Model/SdkTokenRequest.php
@@ -73,7 +73,7 @@ class SdkTokenRequest implements ModelInterface, ArrayAccess, \JsonSerializable
     protected static $openAPIFormats = [
         'applicant_id' => 'uuid',
         'referrer' => null,
-        'application_id' => 'uuid',
+        'application_id' => null,
         'cross_device_url' => null
     ];