#8 change update mod.

internal/modules/modproxy.go

@@ -163,6 +163,7 @@ func Query(modpath string, cached bool) (*Module, bool, error) {
 // cached sets the Disable-Module-Fetch: true header
 func Latest(modpath string, cached bool) (*Module, error) {
 	latest, ok, err := Query(modpath, cached)
+	fmt.Println("latest: ", latest)
 	if err != nil {
 		return nil, err
 	}
@@ -275,7 +276,14 @@ func Updates(opt UpdateOptions) {
 					ch <- Update{Module: m, Err: err}
 					return nil
 				}
-				v := mod.MaxVersion("", opt.Pre)
+				prefix, ok := ModMajor(mod.Path)
+				var v string
+				switch ok {
+				case true:
+					v = mod.MaxVersion(prefix, opt.Pre)
+				default:
+					v = mod.MaxVersion("", opt.Pre)
+				}
 				if IsNewerVersion(m.Version, v, opt.Major) {
 					ch <- Update{Module: m, Version: v}
 				}