diff --git a/src/Console/Command/BuildConfigurationCommand.php b/src/Console/Command/BuildConfigurationCommand.php
index c80d291..5ad934a 100644
--- a/src/Console/Command/BuildConfigurationCommand.php
+++ b/src/Console/Command/BuildConfigurationCommand.php
@@ -86,6 +86,8 @@ final class BuildConfigurationCommand extends Command
                 'dockerfile' => new Assert\Optional(),
 
                 'php' => new Assert\Optional(),
+
+                'web' => new Assert\Optional(),
             ],
         );