diff --git a/tool/rbs_skip_tests b/tool/rbs_skip_tests
index ce3293a997..6da6ffd4e2 100644
--- a/tool/rbs_skip_tests
+++ b/tool/rbs_skip_tests
@@ -72,3 +72,6 @@ test_iconv(JSONSingletonTest)
 # https://github.com/ruby/json/pull/774
 test_recurse_proc(JSONInstanceTest)
 test_recurse_proc(JSONSingletonTest)
+
+CGITest CGI is retired
+CGISingletonTest CGI is retired