diff --git a/Demo/resiter.py b/Demo/resiter.py
index d6796ba..96e9c90 100644
--- a/Demo/resiter.py
+++ b/Demo/resiter.py
@@ -2,7 +2,7 @@
 Demo for using ldap.resiter.ResultProcessor
 written by Michael Stroeder <michael@stroeder.com>
 
-See http://www.python-ldap.org for details.
+See https://www.python-ldap.org for details.
 """
 from __future__ import print_function
 
diff --git a/Doc/installing.rst b/Doc/installing.rst
index 01d39c7..efbab70 100644
--- a/Doc/installing.rst
+++ b/Doc/installing.rst
@@ -55,7 +55,7 @@ hit a problem already fixed in recent releases.
 ---------------------------------------------
 
 Ships with python-ldap and there's an additional
-`download repository <http://download.opensuse.org/repositories/devel:/languages:/python/>`_
+`download repository <https://download.opensuse.org/repositories/devel:/languages:/python/>`_
 which contains builds of latest releases
 (see also `OBS package <https://build.opensuse.org/package/show/devel:languages:python/python-ldap>`_).
 
diff --git a/Lib/ldap/controls/openldap.py b/Lib/ldap/controls/openldap.py
index 7108c63..5da2dd3 100644
--- a/Lib/ldap/controls/openldap.py
+++ b/Lib/ldap/controls/openldap.py
@@ -23,7 +23,7 @@ class SearchNoOpControl(ValueLessRequestControl,ResponseControl):
   No-op control attached to search operations implementing sort of a
   count operation
 
-  see http://www.openldap.org/its/index.cgi?findid=6598
+  see https://www.openldap.org/its/index.cgi?findid=6598
   """
   controlType = '1.3.6.1.4.1.4203.666.5.18'
 
diff --git a/Tests/t_ldap_sasl.py b/Tests/t_ldap_sasl.py
index 7f472cc..af6ed51 100644
--- a/Tests/t_ldap_sasl.py
+++ b/Tests/t_ldap_sasl.py
@@ -2,7 +2,7 @@
 """
 Automatic tests for python-ldap's module ldap.sasl
 
-See http://www.python-ldap.org/ for details.
+See https://www.python-ldap.org/ for details.
 """
 import os
 import pwd
diff --git a/Tests/t_ldap_syncrepl.py b/Tests/t_ldap_syncrepl.py
index 539ff3a..0581e50 100644
--- a/Tests/t_ldap_syncrepl.py
+++ b/Tests/t_ldap_syncrepl.py
@@ -2,7 +2,7 @@
 """
 Automatic tests for python-ldap's module ldap.syncrepl
 
-See http://www.python-ldap.org/ for details.
+See https://www.python-ldap.org/ for details.
 """