diff --git a/doc/src/index.rst b/doc/src/index.rst
index 86e376ab..f504e56b 100644
--- a/doc/src/index.rst
+++ b/doc/src/index.rst
@@ -7,7 +7,7 @@ Check websites for broken links
 
 Introduction
 -------------
-LinkChecker is a free, `GPL <http://www.gnu.org/licenses/gpl-2.0.html>`_
+LinkChecker is a free, `GPL <https://www.gnu.org/licenses/old-licenses/gpl-2.0.html>`_
 licensed website validator.
 LinkChecker checks links in web documents or full websites.
 It runs on Python 3 systems, requiring Python 3.8 or later.
diff --git a/tests/test_linkchecker.py b/tests/test_linkchecker.py
index 03175c02..e105a848 100644
--- a/tests/test_linkchecker.py
+++ b/tests/test_linkchecker.py
@@ -11,7 +11,7 @@
 # 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/>.
 import unittest
 import sys
 from . import run_checked