diff --git a/lib/airbrake/configuration.rb b/lib/airbrake/configuration.rb
index 21cd1621c..c111ca50b 100644
--- a/lib/airbrake/configuration.rb
+++ b/lib/airbrake/configuration.rb
@@ -138,6 +138,7 @@ class Configuration
                       'ActionController::RoutingError',
                       'ActionController::InvalidAuthenticityToken',
                       'CGI::Session::CookieStore::TamperedWithCookie',
+                      'ActionController::UnknownHttpMethod',
                       'ActionController::UnknownAction',
                       'AbstractController::ActionNotFound',
                       'Mongoid::Errors::DocumentNotFound']