diff --git a/spec/falcon/ssl_server_spec.rb b/spec/falcon/ssl_server_spec.rb
index 8d45bf6..069d006 100644
--- a/spec/falcon/ssl_server_spec.rb
+++ b/spec/falcon/ssl_server_spec.rb
@@ -22,6 +22,7 @@
 
 require 'falcon/server'
 require 'async/http/client'
+require 'async/http/endpoint'
 require 'async/rspec/reactor'
 require 'async/rspec/ssl'