diff --git a/test/uri/test_ws.rb b/test/uri/test_ws.rb
index e3e66f80c0..17acb0d9f2 100644
--- a/test/uri/test_ws.rb
+++ b/test/uri/test_ws.rb
@@ -1,5 +1,6 @@
 # frozen_string_literal: false
 require 'test/unit'
+require 'uri/http'
 require 'uri/ws'
 
 module URI