diff --git a/lib/composer/composer/autoload_classmap.php b/lib/composer/composer/autoload_classmap.php
index 9341bd1a762480551c51bbeb10c7abf5d55060e9..489b9b3dc1458a6caf39a8b9a949db02b33828d1 100644
--- a/lib/composer/composer/autoload_classmap.php
+++ b/lib/composer/composer/autoload_classmap.php
@@ -226,6 +226,7 @@ return array(
     'OCP\\Lockdown\\ILockdownManager' => $baseDir . '/lib/public/Lockdown/ILockdownManager.php',
     'OCP\\Mail\\IEMailTemplate' => $baseDir . '/lib/public/Mail/IEMailTemplate.php',
     'OCP\\Mail\\IMailer' => $baseDir . '/lib/public/Mail/IMailer.php',
+    'OCP\\Mail\\IMessage' => $baseDir . '/lib/public/Mail/IMessage.php',
     'OCP\\Migration\\BigIntMigration' => $baseDir . '/lib/public/Migration/BigIntMigration.php',
     'OCP\\Migration\\IMigrationStep' => $baseDir . '/lib/public/Migration/IMigrationStep.php',
     'OCP\\Migration\\IOutput' => $baseDir . '/lib/public/Migration/IOutput.php',
diff --git a/lib/composer/composer/autoload_static.php b/lib/composer/composer/autoload_static.php
index 5715ff6ed05ecf12986e4124afa9b2c334c79e04..1297f4606f688bf2ad2f7269fb1c108aa1748b3c 100644
--- a/lib/composer/composer/autoload_static.php
+++ b/lib/composer/composer/autoload_static.php
@@ -256,6 +256,7 @@ class ComposerStaticInit53792487c5a8370acc0b06b1a864ff4c
         'OCP\\Lockdown\\ILockdownManager' => __DIR__ . '/../../..' . '/lib/public/Lockdown/ILockdownManager.php',
         'OCP\\Mail\\IEMailTemplate' => __DIR__ . '/../../..' . '/lib/public/Mail/IEMailTemplate.php',
         'OCP\\Mail\\IMailer' => __DIR__ . '/../../..' . '/lib/public/Mail/IMailer.php',
+        'OCP\\Mail\\IMessage' => __DIR__ . '/../../..' . '/lib/public/Mail/IMessage.php',
         'OCP\\Migration\\BigIntMigration' => __DIR__ . '/../../..' . '/lib/public/Migration/BigIntMigration.php',
         'OCP\\Migration\\IMigrationStep' => __DIR__ . '/../../..' . '/lib/public/Migration/IMigrationStep.php',
         'OCP\\Migration\\IOutput' => __DIR__ . '/../../..' . '/lib/public/Migration/IOutput.php',