diff --git a/test/uri/test_http.rb b/test/uri/test_http.rb
index a52b4cfe28..748e90a322 100644
--- a/test/uri/test_http.rb
+++ b/test/uri/test_http.rb
@@ -1,6 +1,7 @@
 # frozen_string_literal: false
 require 'test/unit'
 require 'uri/http'
+require 'uri/https'
 
 module URI