diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 647f984e5963a915e972fd4e7338bb69a42e6c1c..5689e108a98add43b02f64eb4bf85594204bc762 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -3,8 +3,9 @@ Git Workflow
 
 Mainly two main branches are in use:
 
-- `master` deployed on <http://www.orekit.org>
-- `develop` deployed on <http://test.orekit.org>
+- `master` deployed on <https://www.orekit.org>
+- `develop` deployed on <https://test.orekit.org>
 
-Any other branches are also processed automatically, but the website is not deployed and only archived as artifact.
-The developer is then able to browse or download these file to check the processing.
\ No newline at end of file
+Any other branches are also processed automatically, but the website is not
+deployed and only archived as artifact. The developer is then able to browse
+or download these file to check the processing.
diff --git a/_config.yml b/_config.yml
index c88da4be4735bc1bcc92081b6bbcf8969151e455..5aba2c99122f0b5e84b9bf97c4762a8a1d37ff06 100644
--- a/_config.yml
+++ b/_config.yml
@@ -13,7 +13,7 @@ baseurl: ""
 # The base hostname & protocol for your site without a trailing slash.
 url: "https://www.orekit.org"
 
-# http://jekyllrb.com/docs/permalinks/
+# https://jekyllrb.com/docs/permalinks/
 permalink: date
 
 # Build settings
diff --git a/_includes/footer_orekit.html b/_includes/footer_orekit.html
index cf394c45b8c5b1862b7b00183b303e20cc4f0735..c17112b7c1511252e5bf506556163670ab7f4238 100644
--- a/_includes/footer_orekit.html
+++ b/_includes/footer_orekit.html
@@ -13,9 +13,9 @@
             <div id="footerCopyright">
               <p>Copyright &copy; 2002–2025 <a href="https://www.csgroup.eu/">CS GROUP</a> and
                 <a href="https://gitlab.orekit.org/orekit/orekit/-/graphs/develop">others</a><br/>
-                <a rel="license" href="http://creativecommons.org/licenses/by/3.0/"><img alt="CC By 3.0 logo" src="/img/cc-by-3.0-80x15.png"/></a>
+                <a rel="license" href="https://creativecommons.org/licenses/by/3.0/"><img alt="CC By 3.0 logo" src="/img/cc-by-3.0-80x15.png"/></a>
                 Except where otherwise noted, the Orekit web pages are released under
-                <a rel="license" href="http://creativecommons.org/licenses/by/3.0/">Creative Commons Attribution 3.0 License</a><br/>
+                <a rel="license" href="https://creativecommons.org/licenses/by/3.0/">Creative Commons Attribution 3.0 License</a><br/>
                 Last modified: {% if page.modified %}{{ page.modified }}{% else %}{{ page.date }}{% endif %}</p>
             </div>
           </div>
diff --git a/_includes/footer_rugged.html b/_includes/footer_rugged.html
index 4baa561af5590991c44053bb7a3bb019a303cb0f..62e7045b88ef9d22abb29b357144b64b04fc9851 100644
--- a/_includes/footer_rugged.html
+++ b/_includes/footer_rugged.html
@@ -13,9 +13,9 @@
             <div id="footerCopyright">
               <p>Copyright &copy; 2014–2025 <a href="https://www.csgroup.eu/">CS GROUP</a> and
                 <a href="https://gitlab.orekit.org/orekit/rugged/-/graphs/develop">others</a><br/>
-                <a rel="license" href="http://creativecommons.org/licenses/by/3.0/"><img alt="CC By 3.0 logo" src="/img/cc-by-3.0-80x15.png"/></a>
+                <a rel="license" href="https://creativecommons.org/licenses/by/3.0/"><img alt="CC By 3.0 logo" src="/img/cc-by-3.0-80x15.png"/></a>
                 Except where otherwise noted, the Rugged web pages are released under
-                <a rel="license" href="http://creativecommons.org/licenses/by/3.0/">Creative Commons Attribution 3.0 License</a><br/>
+                <a rel="license" href="https://creativecommons.org/licenses/by/3.0/">Creative Commons Attribution 3.0 License</a><br/>
                 Last modified: {% if page.modified %}{{ page.modified }}{% else %}{{ page.date }}{% endif %}</p>
             </div>
           </div>
diff --git a/_posts/2016-01-06-apache-commons-math-3.6-released.md b/_posts/2016-01-06-apache-commons-math-3.6-released.md
index 80645a85b856c7ef77b355d2212777dbd1bffc26..14ebc52dac92a8c6ec6b46a06074b5bb22fc82da 100644
--- a/_posts/2016-01-06-apache-commons-math-3.6-released.md
+++ b/_posts/2016-01-06-apache-commons-math-3.6-released.md
@@ -3,8 +3,8 @@ title: "Apache Commons Math 3.6 released"
 excerpt: "This version will be used in the upcoming Orekit 7.1 release."
 layout: post_orekit
 publication_year: 2016
-date 2016-01-06 10:23:00 +0100 :
-modified: 2016-01-06 10:23:00 +0100
+date: 2016-01-06 10:23:00 +0100 :
+modified: 2025-03-26 16:13:01 +01:00
 project: orekit
 categories:
 - News
@@ -29,7 +29,7 @@ The new features introduced in version 3.6 are:
 Several bugs have been fixed.
 
 The release notes and complete source distribution can be retrieved on
-the [Apache Commons Math project site](http://commons.apache.org/proper/commons-math/).
+the [Apache Commons Math project site](https://commons.apache.org/proper/commons-math/).
 The maven artifacts are also available in maven central repository.
 
 Apache Commons Math 3.6 version will be used in the upcoming Orekit 7.1 release.
diff --git a/_posts/2020-02-21-orekit-python-wrapper-10.1-available.md b/_posts/2020-02-21-orekit-python-wrapper-10.1-available.md
index e7cf4c27984bfb246e16805fc888a23fa4570c43..4e0a8e8afec4436292a618575ce80385b1f7e5fd 100644
--- a/_posts/2020-02-21-orekit-python-wrapper-10.1-available.md
+++ b/_posts/2020-02-21-orekit-python-wrapper-10.1-available.md
@@ -4,7 +4,7 @@ excerpt: "Following the 10.1 main orekit release, the Python wrapper 10.1 is now
 layout: post_orekit
 publication_year: 2020
 date: 2020-02-21 08:17:00 +0100
-modified: 2020-02-24 11:55:23 +0100
+modified: 2025-03-26 16:10:55 +01:00
 project: orekit
 categories:
 - News
@@ -51,5 +51,5 @@ sources.
 contains advanced examples.
 
 Please post general questions on usage or problems on the [orekit
-forum](http://forum.orekit.org) and please report identified bugs or issues on
+forum](https://forum.orekit.org) and please report identified bugs or issues on
 the [issue page](https://gitlab.orekit.org/orekit-labs/python-wrapper/issues).
diff --git a/atom.xml b/atom.xml
index 7a206662ee6f50c452b5cc58cf44325aa591100c..6e81f84a8202741fc668d6914902d166c0f8740a 100644
--- a/atom.xml
+++ b/atom.xml
@@ -3,7 +3,7 @@ layout:
 title: Orekit Atom feed
 ---
 <?xml version="1.0" encoding="utf-8"?>
-<feed xmlns="http://www.w3.org/2005/Atom">
+<feed xmlns="https://www.w3.org/2005/Atom">
 
   <title type="text" xml:lang="en">Orekit news</title>
   <link type="application/atom+xml" rel="self" href="{{ site.url }}/atom.xml"/>
diff --git a/doc-tutorials.html b/doc-tutorials.html
index d1e92c0ab522ef9e8807fd4ceb9bd08df7dde5b7..9b1fe911021db423002d49a0297282a6ffb1e1a2 100644
--- a/doc-tutorials.html
+++ b/doc-tutorials.html
@@ -24,7 +24,7 @@ layout: default_orekit
 <h3>Markdown tutorials</h3>
 <p>Tutorials provided with source code and comments in order to
   emphazise particular use cases:</p>
-  
+
 <ul class="fa-ul">
   <li>
     <p><span class="fa-li fa-lg fa fa-gears"></span><a href="{{ site.url }}/site-orekit-tutorials-{{ site.data.orekit-tutorials.versions.first }}/tutorials/attitude.html">Attitude</a><br/>
@@ -98,7 +98,7 @@ layout: default_orekit
     </ul>
   </li>
   <p>
-  
+
   <li>
     <span class="fa-li fa-lg fa fa-gears"></span>
 	Control / indirect
@@ -107,7 +107,7 @@ layout: default_orekit
 	</ul>
   </li>
   <p>
-  
+
   <li>
     <span class="fa-li fa-lg fa fa-gears"></span>
     Conversion
@@ -119,7 +119,7 @@ layout: default_orekit
     </ul>
   </li>
   <p>
-  
+
   <li>
     <span class="fa-li fa-lg fa fa-gears"></span>
     Data
@@ -127,7 +127,7 @@ layout: default_orekit
 	  <li>Context: explains how to instantiate several data contexts</li>
 	</ul>
   <p>
-  
+
   <li>
     <span class="fa-li fa-lg fa fa-gears"></span>
     Estimation: orbit determination (OD) example
@@ -145,7 +145,7 @@ layout: default_orekit
     </ul>
   </li>
   <p>
-  
+
   <li>
     <span class="fa-li fa-lg fa fa-gears"></span>
     Frames
@@ -154,7 +154,7 @@ layout: default_orekit
 	</ul>
   </li>
   <p>
-  
+
   <li>
     <span class="fa-li fa-lg fa fa-gears"></span>
     Gnss
@@ -164,7 +164,7 @@ layout: default_orekit
     </ul>
   </li>
   <p>
-  
+
   <li>
     <span class="fa-li fa-lg fa fa-gears"></span>
     Maneuvers
@@ -175,7 +175,7 @@ layout: default_orekit
     </ul>
   </li>
   <p>
-  
+
   <li>
     <span class="fa-li fa-lg fa fa-gears"></span>
     Models
@@ -183,7 +183,7 @@ layout: default_orekit
 	  <li>TidalDisplacements: shows how to compute stations tidal displacements</li>
 	</ul>
   <p>
-  
+
   <li>
     <span class="fa-li fa-lg fa fa-gears"></span>
     Propagation
@@ -275,12 +275,12 @@ layout: default_orekit
 
 <ul class="fa-ul">
   <li>
-    <p><span class="fa-li fa-lg fa fa-gears"></span><a href="http://sites.utexas.edu/moriba/astriagraph/">ASTRIAGraph</a><br/>
+    <p><span class="fa-li fa-lg fa fa-gears"></span><a href="https://sites.utexas.edu/moriba/astriagraph/">ASTRIAGraph</a><br/>
       ASTRIAGraph (see the <a href="http://astria.tacc.utexas.edu/AstriaGraph/">demonstration site</a>)
       is an interactive visualization application which relies on orbdetpy, an
       orbit determination library itself based on Orekit. ASTRIAGraph and
       orbdetpy are both developed at the Advanced Sciences and Technology Research in Astronautics
-      (<a href="http://astria.tacc.utexas.edu/">ASTRIA</a>)
+      (<a href="https://sites.utexas.edu/moriba/">ASTRIA</a>)
       team of the University of Texas at Austin, and distributed under the GNU
       GPL v3.0 license. They are published on Github
       (<a href="https://github.com/ut-astria/AstriaGraph">AstriaGraph</a>
diff --git a/index.html b/index.html
index d21c94722fde8a0036224328da25712089b3f0b8..9ddf0b29590f796f698bed71b4fe904f913d797a 100644
--- a/index.html
+++ b/index.html
@@ -2,7 +2,7 @@
 title: About Orekit
 excerpt: Orekit is a low level space dynamics library
 date: 2019-08-17 00:30:10 +02:00
-modified: 2025-03-24 13:47:25 +01:00
+modified: 2025-03-26 16:04:08 +01:00
 layout: home_orekit
 ---
 
@@ -96,15 +96,15 @@ layout: home_orekit
         <p>Orekit has been successfully used during the real time monitoring
           of the rendez-vous phase between the Automated Transfer Vehicle
           (ATV) and the International Space Station (ISS) by the
-          <a href="http://www.cnes.fr/">Centre National d'Études Spatiales</a>
-          (CNES) and the <a href="http://www.esa.int/">European Space Agency</a>
+          <a href="https://www.cnes.fr/">Centre National d'Études Spatiales</a>
+          (CNES) and the <a href="https://www.esa.int/">European Space Agency</a>
           (ESA).</p>
       </li>
 
       <li><span class="fa-li fa-lg fa fa-gears"></span>
         <p>Orekit is used for several studies and ground systems developments
           by various industrial actors such as
-          <a href="http://www.eumetsat.int/">EUMETSAT</a>.</p>
+          <a href="https://www.eumetsat.int/">EUMETSAT</a>.</p>
       </li>
 
       <li><span class="fa-li fa-lg fa fa-gears"></span>
diff --git a/license.html b/license.html
index 893019a5158872b26ea3316d666ee911aeb7e524..f1536b377c9dc75d1f202e47d187f2532b1061f0 100644
--- a/license.html
+++ b/license.html
@@ -8,7 +8,7 @@ layout: default_orekit
 <h1>Orekit license</h1>
 
 <p>Orekit is distributed under the
-<a href="http://www.apache.org/licenses/LICENSE-2.0.html">Apache License version 2.0</a>,
+<a href="https://www.apache.org/licenses/LICENSE-2.0.html">Apache License version 2.0</a>,
 a well known business-friendly license.</p>
 
 <pre>
diff --git a/overview.html b/overview.html
index c501facd3f12174400e8f8ea6f4bfd01deb66111..632e21db225fe7e07459cc43c8694939022ff037 100644
--- a/overview.html
+++ b/overview.html
@@ -1,7 +1,7 @@
 ---
 title: Orekit Overview
 date: 2016-07-05 12:05:00 +02:00
-modified: 2023-11-08 22:00:00 +01:00
+modified: 2025-03-26 16:03:41 +01:00
 layout: default_orekit
 ---
 
@@ -39,8 +39,8 @@ layout: default_orekit
   <li>
     <p><strong>JUnit</strong><br/>
     Copyright &copy; Erich Gamma and Kent Beck<br/>
-    License: <a href="http://www.eclipse.org/legal/epl-v10.html">Eclipse Public License, version 1.0</a><br/>
-    Reference: <a href="http://www.junit.org/">http://www.junit.org/</a></p>
+    License: <a href="https://www.eclipse.org/legal/epl-v10.html">Eclipse Public License, version 1.0</a><br/>
+    Reference: <a href="https://www.junit.org/">https://www.junit.org/</a></p>
   </li>
 </ul>
 
@@ -491,7 +491,7 @@ layout: default_orekit
       <li>Alfano 2005</li>
       <li>Patera 2005 (custom Orekit implementation) (recommended)</li>
       <li>Laas 2015 (recommended)</li>
-    </ul>	
+    </ul>
   </li>
 </ul>
 
diff --git a/resources.html b/resources.html
index 4fe135688b6ad98ace5e657c1658434a35e1e05f..b66d289ef581bcc413b65f56687de4d4c80f83a4 100644
--- a/resources.html
+++ b/resources.html
@@ -1,7 +1,7 @@
 ---
 title: Resources
 date: 2016-11-17 17:28:47 +01:00
-modified: 2023-05-21 09:44:14 +02:00
+modified: 2025-03-26 16:03:25 +01:00
 layout: default_orekit
 ---
 
@@ -11,54 +11,54 @@ layout: default_orekit
 
 <h2>Tools</h2>
 
-<p class="h3"><span class="fa fa-gears"></span> Jekyll <small>- a static website generator which merit publicity</small></p>
-<p>Copyright &copy; 2008-2019 - Tom Preston-Werner<br/>
+<p class="h3"><span class="fa fa-gears"></span> Jekyll <small>&ndash; a static website generator which merit publicity</small></p>
+<p>Copyright &copy; 2008&ndash;2025 &ndash; Tom Preston-Werner<br/>
   License: <a href="https://github.com/jekyll/jekyll/blob/master/LICENSE">MIT License</a><br/>
-  Website: <a href="http://jekyllrb.com/">http://jekyllrb.com/</a></p>
+  Website: <a href="https://jekyllrb.com/">https://jekyllrb.com/</a></p>
 
-<p class="h3"><span class="fa fa-gears"></span> Bootstrap <small>- a popular HTML, CSS, and JS framework</small></p>
-<p>Copyright &copy; 2011-2019 - Twitter, Inc<br/>
+<p class="h3"><span class="fa fa-gears"></span> Bootstrap <small>&ndash; a popular HTML, CSS, and JS framework</small></p>
+<p>Copyright &copy; 2011&ndash;2019 &ndash; Twitter, Inc<br/>
   License: <a href="https://github.com/twbs/bootstrap/blob/master/LICENSE">MIT License</a><br/>
-  Website: <a href="http://getbootstrap.com/">http://getbootstrap.com/</a></p>
+  Website: <a href="https://getbootstrap.com/">https://getbootstrap.com/</a></p>
 
 <h2>Themes</h2>
 
-<p class="h3"><span class="fa fa-paint-brush"></span> Spacelab <small>- a nice Bootstrap theme</small></p>
-<p>Copyright &copy; 2013-2015 - Thomas Park<br/>
+<p class="h3"><span class="fa fa-paint-brush"></span> Spacelab <small>&ndash; a nice Bootstrap theme</small></p>
+<p>Copyright &copy; 2013&ndash;2015 &ndash; Thomas Park<br/>
   License: <a href="https://github.com/thomaspark/bootswatch/blob/gh-pages/LICENSE">MIT License</a><br/>
-  Website: <a href="http://bootswatch.com/">http://bootswatch.com/</a></p>
+  Website: <a href="https://bootswatch.com/">https://bootswatch.com/</a></p>
 
 <h2>Fonts</h2>
 
 <p class="h3"><span class="fa fa-font"></span> Open Sans</p>
-<p>Copyright &copy; 2011 - Ascender Fonts<br/>
-  License: <a href="http://www.fontsquirrel.com/license/open-sans">Apache 2.0 License</a><br/>
-  Website: <a href="http://www.fontsquirrel.com/fonts/open-sans">http://www.fontsquirrel.com/fonts/open-sans</a></p>
+<p>Copyright &copy; 2011 &ndash; Ascender Fonts<br/>
+  License: <a href="https://www.fontsquirrel.com/license/open-sans">Apache 2.0 License</a><br/>
+  Website: <a href="https://www.fontsquirrel.com/fonts/open-sans">https://www.fontsquirrel.com/fonts/open-sans</a></p>
 
 <p class="h3"><span class="fa fa-font"></span> Open Sans Condensed</p>
-<p>Copyright &copy; 2011 - Ascender Fonts<br/>
-  License: <a href="http://www.fontsquirrel.com/license/open-sans-condensed">Apache 2.0 License</a><br/>
-  Website: <a href="http://www.fontsquirrel.com/fonts/open-sans-condensed">http://www.fontsquirrel.com/fonts/open-sans-condensed</a></p>
+<p>Copyright &copy; 2011 &ndash; Ascender Fonts<br/>
+  License: <a href="https://www.fontsquirrel.com/license/open-sans-condensed">Apache 2.0 License</a><br/>
+  Website: <a href="https://www.fontsquirrel.com/fonts/open-sans-condensed">https://www.fontsquirrel.com/fonts/open-sans-condensed</a></p>
 
 <p class="h3"><span class="fa fa-font"></span> Font Awesome</p>
-<p>Copyright &copy; 2012-2014 - Dave Gandy<br/>
-  License: <a href="http://fontawesome.io/license/">SIL Open Font License 1.1</a><br/>
-  Website: <a href="http://fontawesome.io/">http://fontawesome.io/</a></p>
+<p>Copyright &copy; 2012&ndash;2014 &ndash; Dave Gandy<br/>
+  License: <a href="https://fontawesome.com/license/free">SIL Open Font License 1.1</a><br/>
+  Website: <a href="https://fontawesome.com/">https://fontawesome.com/</a></p>
 
 <h2>Pictures</h2>
 
-<p class="h3"><span class="fa fa-picture-o"></span> STS103-726-081 <small>- Hubble Space Telescope (HST) photographed from the space shuttle Discovery</small></p>
-<p>Copyright &copy; 1999 - NASA (National Aeronautics and Space Administration)<br/>
-  License: <a href="http://en.wikipedia.org/wiki/Public_domain">Public domain</a><br/>
+<p class="h3"><span class="fa fa-picture-o"></span> STS103-726-081 <small>&ndash; Hubble Space Telescope (HST) photographed from the space shuttle Discovery</small></p>
+<p>Copyright &copy; 1999 &ndash; NASA (National Aeronautics and Space Administration)<br/>
+  License: <a href="https://en.wikipedia.org/wiki/Public_domain">Public domain</a><br/>
   Website: <a href="https://commons.wikimedia.org/wiki/File:The_Hubble_Space_Telescope_(HST)_floats_gracefully_above_the_blue_Earth_after_release_from_Discovery%27s_robot_arm_after_a_successful_servicing_mission.jpg">https://commons.wikimedia.org/wiki/File:The_Hubble_Space_Telescope_(HST)_floats_gracefully_above_the_blue_Earth_after_release_from_Discovery%27s_robot_arm_after_a_successful_servicing_mission.jpg</a><br/>
   Note: NASA had originally published this photograph on the spaceflight.nasa.gov website,
   which it retired in 2021. As of April 2023, this photograph still does not appear in
   <a href="https://images.nasa.gov/">NASA's new gallery</a>, but can be found on the
   Wikimedia Commons site.</p>
 
-<p class="h3"><span class="fa fa-picture-o"></span> S135-E-011864 <small>- International Space Station (ISS) photographed from the space shuttle Atlantis</small></p>
-<p>Copyright &copy; 2011 - NASA (National Aeronautics and Space Administration)<br/>
-  License: <a href="http://en.wikipedia.org/wiki/Public_domain">Public domain</a><br/>
+<p class="h3"><span class="fa fa-picture-o"></span> S135-E-011864 <small>&ndash; International Space Station (ISS) photographed from the space shuttle Atlantis</small></p>
+<p>Copyright &copy; 2011 &ndash; NASA (National Aeronautics and Space Administration)<br/>
+  License: <a href="https://en.wikipedia.org/wiki/Public_domain">Public domain</a><br/>
   Website: <a href="https://commons.wikimedia.org/wiki/File:STS-135_final_flyaround_of_ISS_3.jpg">https://commons.wikimedia.org/wiki/File:STS-135_final_flyaround_of_ISS_3.jpg</a><br/>
   Note: NASA had originally published this photograph on the spaceflight.nasa.gov website,
   which it retired in 2021. As of April 2023, this photograph still does not appear in
@@ -66,11 +66,7 @@ layout: default_orekit
   Wikimedia Commons site.</p>
 
 <p class="h3"><span class="fa fa-picture-o"></span> Himalayan Topography (based on ASTER data)</p>
-<p>Copyright &copy; 2009 - NASA (National Aeronautics and Space Administration), image by Robert Simmon<br/>
-  License: see <a href="http://earthobservatory.nasa.gov/ImageUse/">NASA’s Earth Observatory image use policy</a> (this image is freely available for re-publication or re-use, including commercial purposes)</a><br/>
-Website: <a href="http://earthobservatory.nasa.gov/IOTD/view.php?id=39160">http://earthobservatory.nasa.gov/IOTD/view.php?id=39160</a></p>
-
-<p class="h3"><span class="fa fa-picture-o"></span> Filé d’étoiles assemblé avec Startrails</p>
-<p>Copyright &copy; 2012 - Thomas Bresson<br/>
-  License: <a href="https://creativecommons.org/licenses/by/3.0/deed.en">Creative Commons Attribution 3.0 Unported License</a><br/>
-  Website: <a href="http://commons.wikimedia.org/wiki/File:2012-03-21_21-34-00-startrails.jpg">http://commons.wikimedia.org/wiki/File:2012-03-21_21-34-00-startrails.jpg</a></p>
+<p>Copyright &copy; 2009 &ndash; NASA (National Aeronautics and Space Administration), image by Robert Simmon<br/>
+  License: see <a href="https://earthobservatory.nasa.gov/image-use-policy">NASA’s Earth Observatory image use policy</a>
+  (this image is freely available for re-publication or re-use, including commercial purposes)</a><br/>
+  Website: <a href="https://earthobservatory.nasa.gov/IOTD/view.php?id=39160">https://earthobservatory.nasa.gov/IOTD/view.php?id=39160</a></p>
diff --git a/rss.xml b/rss.xml
index 32bc26c9101772ebc13290d594110e8b14fa315d..c66eb0bc6ce5c6c81d39483b198fceb96350ea42 100644
--- a/rss.xml
+++ b/rss.xml
@@ -3,7 +3,7 @@ layout:
 title: Orekit RSS feed
 ---
 <?xml version="1.0"?>
-<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
+<rss version="2.0" xmlns:atom="https://www.w3.org/2005/Atom">
   <channel>
     <title>Orekit news</title>
     <link>{{ site.url }}</link>
diff --git a/rugged/atom.xml b/rugged/atom.xml
index 6fb0378e4191d92f28b7c43a51b55acfb5667193..dc1a11eab67ee79187dab6887905a4bcb6e9710a 100644
--- a/rugged/atom.xml
+++ b/rugged/atom.xml
@@ -3,7 +3,7 @@ layout:
 title: Rugged Atom feed
 ---
 <?xml version="1.0" encoding="utf-8"?>
-<feed xmlns="http://www.w3.org/2005/Atom">
+<feed xmlns="https://www.w3.org/2005/Atom">
 
   <title type="text" xml:lang="en">Rugged news</title>
   <link type="application/atom+xml" rel="self" href="{{ site.url }}/rugged/atom.xml"/>
diff --git a/rugged/license.html b/rugged/license.html
index db6105c356c62d845b07f8b2f4d675e277dfe7db..2a2d79b356d339f74ab9fde8bf0c8f108c8f3c7b 100644
--- a/rugged/license.html
+++ b/rugged/license.html
@@ -8,7 +8,7 @@ layout: default_rugged
 <h1>Rugged license</h1>
 
 <p>Rugged is distributed under the
-<a href="http://www.apache.org/licenses/LICENSE-2.0.html">Apache License version 2.0</a>,
+<a href="https://www.apache.org/licenses/LICENSE-2.0.html">Apache License version 2.0</a>,
 a well known business-friendly license.</p>
 
 <pre>
diff --git a/rugged/overview.html b/rugged/overview.html
index a311f30423c1faa56548eaacf7946e20c9805cfc..9e41aba88a76c952780d0c45fcb651d7374c4582 100644
--- a/rugged/overview.html
+++ b/rugged/overview.html
@@ -47,8 +47,8 @@ version 2.1 (or above) libraries at runtime.</p>
   <li>
     <p><strong>JUnit 4</strong><br/>
     Copyright &copy; Erich Gamma and Kent Beck<br/>
-    License: <a href="http://www.eclipse.org/legal/cpl-v10.html">Common Public License, version 1.0</a><br/>
-    Reference: <a href="http://www.junit.org/">http://www.junit.org/</a></p>
+    License: <a href="https://www.eclipse.org/legal/cpl-v10.html">Common Public License, version 1.0</a><br/>
+    Reference: <a href="https://www.junit.org/">https://www.junit.org/</a></p>
   </li>
 </ul>
 
diff --git a/rugged/rss.xml b/rugged/rss.xml
index d74054544de53a5a0a5fc7ec38d6b3701c8983f8..5769b6e73dc9153b2a34f965bc8553308e272b83 100644
--- a/rugged/rss.xml
+++ b/rugged/rss.xml
@@ -3,7 +3,7 @@ layout:
 title: Rugged RSS feed
 ---
 <?xml version="1.0"?>
-<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
+<rss version="2.0" xmlns:atom="https://www.w3.org/2005/Atom">
   <channel>
     <title>Rugged news</title>
     <link>{{ site.url }}/rugged/</link>