diff --git a/goutil/goutil_test.go b/goutil/goutil_test.go
index 65a33c0..28b42ff 100644
--- a/goutil/goutil_test.go
+++ b/goutil/goutil_test.go
@@ -41,8 +41,9 @@ func TestExpand(t *testing.T) {
 				"net/http/fcgi", "net/http/httptest", "net/http/httptrace",
 				"net/http/httputil", "net/http/internal", "net/http/internal/ascii",
 				"net/http/internal/testcert", "net/http/pprof",
-				"net/internal/socktest", "net/mail", "net/netip", "net/rpc", "net/rpc/jsonrpc",
-				"net/smtp", "net/textproto", "net/url",
+				"net/internal/cgotest", "net/internal/socktest", "net/mail",
+				"net/netip", "net/rpc", "net/rpc/jsonrpc", "net/smtp", "net/textproto",
+				"net/url",
 			},
 			"",
 		},