diff --git a/autoconf-archive.spec b/autoconf-archive.spec
index dcf9eeb..146711d 100644
--- a/autoconf-archive.spec
+++ b/autoconf-archive.spec
@@ -3,8 +3,8 @@ Version:        2019.01.06
 Release:        6%{?dist}
 Summary:        The Autoconf Macro Archive
 License:        GPLv3+ with exceptions
-URL:            http://www.gnu.org/software/autoconf-archive/
-Source0:        http://ftp.gnu.org/gnu/%{name}/%{name}-%{version}.tar.xz
+URL:            https://www.gnu.org/software/autoconf-archive/
+Source0:        https://ftp.gnu.org/gnu/%{name}/%{name}-%{version}.tar.xz
 BuildArch:      noarch
 BuildRequires:  make
 Requires:       autoconf