diff --git a/README.md b/README.md
index 7606b8f..037e514 100644
--- a/README.md
+++ b/README.md
@@ -4,10 +4,10 @@ Monitorix is a free, open-source, lightweight system monitoring tool designed to
 
 Community
 ---------
-- [Website](http://www.monitorix.org)
-- [Documentation](http://www.monitorix.org/documentation.html)
+- [Website](https://www.monitorix.org)
+- [Documentation](https://www.monitorix.org/documentation.html)
 - [Mailing List](https://lists.sourceforge.net/lists/listinfo/monitorix-general)
-- [IRC](http://webchat.freenode.net/?channels=monitorix)
+- [IRC](https://webchat.freenode.net/?channels=monitorix)
 
 License
 -------
@@ -15,5 +15,5 @@ Monitorix is free software licensed under the terms of the GNU General Public Li
 
 Credits
 -------
-Monitorix was created by [Jordi Sanfeliu](http://www.fibranet.cat).
+Monitorix was created by [Jordi Sanfeliu](https://www.fibranet.cat).
 You can contact me at [jordi@fibranet.cat](mailto:jordi@fibranet.cat).
diff --git a/lib/apache.pm b/lib/apache.pm
index dccff71..b4c22e5 100644
--- a/lib/apache.pm
+++ b/lib/apache.pm
@@ -31,7 +31,7 @@ our @EXPORT = qw(apache_init apache_update apache_cgi);
 #
 # Some ideas of this upgrading function have been taken from a script written
 # by Joost Cassee and found in the RRDtool Contrib Area:
-# <http://oss.oetiker.ch/rrdtool/pub/contrib/>
+# <https://oss.oetiker.ch/rrdtool/pub/contrib/>
 #
 sub upgrade_to_380 {
 	my $myself = (caller(0))[3];
diff --git a/lib/emailreports.pm b/lib/emailreports.pm
index 7757840..7d00266 100644
--- a/lib/emailreports.pm
+++ b/lib/emailreports.pm
@@ -80,7 +80,7 @@ sub emailreports_send {
 EOF
 	my $html_footer = <<EOF;
   <p>
-  <a href='http://www.monitorix.org'><img src='cid:image_logo' border='0'></a>
+  <a href='https://www.monitorix.org'><img src='cid:image_logo' border='0'></a>
   <br>
   <font face='Verdana, sans-serif' color='000000' size='-2'>
 Copyright &copy; 2005-2017 Jordi Sanfeliu