diff --git a/debian/copyright b/debian/copyright
index c681627..09157bb 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -1,7 +1,7 @@
 Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
 Upstream-Name: clzip
 Upstream-Contact: lzip-bug@nongnu.org
-Source: http://download.savannah.gnu.org/releases/lzip/
+Source: https://download.savannah.gnu.org/releases/lzip/
 
 Files: *
 Copyright: 2010-2022 Antonio Diaz Diaz <ant_diaz@teleline.es>
@@ -27,7 +27,7 @@ License: GPL-2+
  GNU General Public License for more details.
  .
  You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
+ along with this program. If not, see <https://www.gnu.org/licenses/>.
  .
  The complete text of the GNU General Public License
  can be found in /usr/share/common-licenses/GPL-2 file.
@@ -44,7 +44,7 @@ License: GPL-2+ with Library exception
  GNU General Public License for more details.
  .
  You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
+ along with this program. If not, see <https://www.gnu.org/licenses/>.
  .
  The complete text of the GNU General Public License
  can be found in /usr/share/common-licenses/GPL-2 file.