diff --git a/docs/source/meta/copying.rst b/docs/source/meta/copying.rst
index be9b65d..db081d7 100644
--- a/docs/source/meta/copying.rst
+++ b/docs/source/meta/copying.rst
@@ -35,9 +35,9 @@
 definitions and are used in accordance with GPL license exception for "System Libraries":
 
 The GPL license is provided below in this file. For more information about these licenses,
-see `<http://www.gnu.org/licenses/>`__
+see `<https://www.gnu.org/licenses/>`__
 
-.. _Boost Software License 1.0 : http://www.boost.org/users/license.html
+.. _Boost Software License 1.0 : https://www.boost.org/users/license.html
 
 ----------------------------------------------------------------------------------
 
@@ -47,7 +47,7 @@
 Version 3, 29 June 2007
 =======================
 
-    Copyright (C) 2007 Free Software Foundation, Inc. http://fsf.org/ Everyone is permitted to copy
+    Copyright (C) 2007 Free Software Foundation, Inc. https://fsf.org/ Everyone is permitted to copy
     and distribute verbatim copies of this license document, but changing it is not allowed.
 
 Preamble
@@ -601,7 +601,7 @@
     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/>.
 
 Also add information on how to contact you by electronic and paper mail.
 
@@ -621,10 +621,10 @@
 
 You should also get your employer (if you work as a programmer) or school, if any, to sign a
 "copyright disclaimer" for the program, if necessary. For more information on this, and how to apply
-and follow the GNU GPL, see http://www.gnu.org/licenses/.
+and follow the GNU GPL, see https://www.gnu.org/licenses/.
 
 The GNU General Public License does not permit incorporating your program into proprietary programs.
 If your program is a subroutine library, you may consider it more useful to permit linking
 proprietary applications with the library. If this is what you want to do, use the GNU Lesser
 General Public License instead of this License. But first, please read
-http://www.gnu.org/philosophy/why-not-lgpl.html.
+https://www.gnu.org/philosophy/why-not-lgpl.html.