diff --git a/content/fringe.html b/content/fringe.html
index 417c40b1..37f4d8d3 100644
--- a/content/fringe.html
+++ b/content/fringe.html
@@ -39,7 +39,7 @@
 </table>
 
 <p>
-  <a href="http://www.fosdem.org/fringe">Add your event</a>.
+  <a href="https://www.fosdem.org/fringe">Add your event</a>.
 </p>
 
 <p><em>
diff --git a/content/practical/transportation.html b/content/practical/transportation.html
index 1e6f143c..baa1a78b 100644
--- a/content/practical/transportation.html
+++ b/content/practical/transportation.html
@@ -101,7 +101,7 @@ <h3 id="train">By train</h3>
 <p>From <strong>Etterbeek</strong> station (about <strong>20 minutes</strong> walking):
 <ul style="margin-top:0">
 <li><a href="https://www.google.com/maps/dir/?api=1&origin=50.822252,4.389511&destination=50.813771,4.384219&travelmode=walking">directions from ULB/FOSDEM to the Etterbeek train station</a></li>
-<li><a href="http://www.belgianrail.be/jp/nmbs-realtime/stboard.exe/en?input=8811411&boardType=dep&time=18:30-60&date=<%= days.last[:conference_day].strftime('%d/%m/%Y') %>&start=yes">timetable for Etterbeek to Bruxelles midi on Sunday at 18:30</a>, takes 25min to Brussels South station, only a train every hour</li></ul></p>
+<li><a href="https://www.belgianrail.be/jp/nmbs-realtime/stboard.exe/en?input=8811411&boardType=dep&time=18:30-60&date=<%= days.last[:conference_day].strftime('%d/%m/%Y') %>&start=yes">timetable for Etterbeek to Bruxelles midi on Sunday at 18:30</a>, takes 25min to Brussels South station, only a train every hour</li></ul></p>
 </p>
 
 <h3 id="parking">By car: parking</h3>
diff --git a/content/sightseeing.html b/content/sightseeing.html
index 98df5387..54e056c7 100644
--- a/content/sightseeing.html
+++ b/content/sightseeing.html
@@ -5,7 +5,7 @@
 
 <div class="floating-image-container-left">
     <img src="asset:sightseeing-cathedral"/>
-    <span>&copy; <a href="http://creativecommons.org/licenses/by/2.0/" rel="license">CC-BY-2.0</a> by <a href="https://secure.flickr.com/photos/brighton/4424281095/">Jim Linwood</a></span>
+    <span>&copy; <a href="https://creativecommons.org/licenses/by/2.0/" rel="license">CC-BY-2.0</a> by <a href="https://secure.flickr.com/photos/brighton/4424281095/">Jim Linwood</a></span>
 </div>
 
 <% if ! @site.config.fetch(:virtual) %>
@@ -92,7 +92,7 @@
 
 <div class="floating-image-container-right">
     <img src="asset:sightseeing-grandplace"/>
-    <span>&copy; <a href="http://creativecommons.org/licenses/by-sa/3.0/" rel="license">CC-BY-SA-3.0</a> by <a href="http://en.wikipedia.org/wiki/File:Maisons_Grand-Place_BXL_01.JPG">Ben2</a></span>
+    <span>&copy; <a href="https://creativecommons.org/licenses/by-sa/3.0/" rel="license">CC-BY-SA-3.0</a> by <a href="https://en.wikipedia.org/wiki/File:Maisons_Grand-Place_BXL_01.JPG">Ben2</a></span>
 </div>
 
 <p>
@@ -114,7 +114,7 @@
 
 <div class="floating-image-container-left">
     <img src="asset:sightseeing-gallery"/>
-    <span>&copy; <a href="http://creativecommons.org/licenses/by-sa/2.0/" rel="license">CC-BY-SA-2.0</a> by <a href="https://secure.flickr.com/photos/johnkarakatsanis/4426286555/">John Karakatsanis</a></span>
+    <span>&copy; <a href="https://creativecommons.org/licenses/by-sa/2.0/" rel="license">CC-BY-SA-2.0</a> by <a href="https://secure.flickr.com/photos/johnkarakatsanis/4426286555/">John Karakatsanis</a></span>
 </div>
 
 <p>