diff --git a/_includes/footer_orekit.html b/_includes/footer_orekit.html
index e7717ece5a30331228a28352859dd5416f1e43ec..fb45e2613aab9c694bd8992336408e29acf5c835 100644
--- a/_includes/footer_orekit.html
+++ b/_includes/footer_orekit.html
@@ -11,7 +11,7 @@
 
           <div class="col-sm-6 col-md-6 col-lg-8 col-xl-6">
             <div id="footerCopyright">
-              <p>Copyright &copy; 2002-2020 <a href="http://www.c-s.fr/">CS GROUP</a> and
+              <p>Copyright &copy; 2002-2022 <a href="https://www.csgroup.eu/">CS GROUP</a> and
                 <a href="https://gitlab.orekit.org/orekit/orekit/-/graphs/master">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>
                 Except where otherwise noted, the Orekit web pages are released under
@@ -21,7 +21,7 @@
           </div>
 
           <div class="col-sm-6 col-md-3 col-lg-2 col-xl-3">
-            <p class="sponsor">Orekit is sponsored by<br/><a href="http://www.c-s.fr/">CS GROUP</a></p>
+            <p class="sponsor">Orekit is sponsored by<br/><a href="https://www.csgroup.eu/">CS GROUP</a></p>
           </div>
 
         </div>
diff --git a/_includes/footer_rugged.html b/_includes/footer_rugged.html
index 6a00708f52dad95428a6954e180383c355cfa9cc..1d32fd7befc058377f8dcfa01445895e2b3cf8c9 100644
--- a/_includes/footer_rugged.html
+++ b/_includes/footer_rugged.html
@@ -11,7 +11,7 @@
 
           <div class="col-sm-6 col-md-6 col-lg-8 col-xl-6">
             <div id="footerCopyright">
-              <p>Copyright &copy; 2014-2020 <a href="http://www.c-s.fr/">CS GROUP</a> and
+              <p>Copyright &copy; 2014-2022 <a href="https://www.csgroup.eu/">CS GROUP</a> and
                 <a href="https://gitlab.orekit.org/orekit/rugged/-/graphs/master">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>
                 Except where otherwise noted, the Rugged web pages are released under
@@ -21,7 +21,7 @@
           </div>
 
           <div class="col-sm-6 col-md-3 col-lg-2 col-xl-3">
-            <p class="sponsor">Rugged is sponsored by<br/><a href="http://www.c-s.fr/">CS GROUP</a></p>
+            <p class="sponsor">Rugged is sponsored by<br/><a href="https://www.csgroup.eu/">CS GROUP</a></p>
           </div>
 
         </div>
diff --git a/_includes/footer_stavor.html b/_includes/footer_stavor.html
index 3297f1195f12fc51182e3bf95aa7b69688f25e8b..2641dcf16a930eab21db2912de360edb579e588d 100644
--- a/_includes/footer_stavor.html
+++ b/_includes/footer_stavor.html
@@ -11,7 +11,7 @@
 
           <div class="col-sm-6 col-md-6 col-lg-8 col-xl-6">
             <div id="footerCopyright">
-              <p>Copyright &copy; 2014-2020 <a href="http://www.c-s.fr/">CS GROUP</a> and
+              <p>Copyright &copy; 2014-2022 <a href="https://www.csgroup.eu/">CS GROUP</a> and
                 <a href="https://gitlab.orekit.org/orekit/stavor/-/graphs/master">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>
                 Except where otherwise noted, the Stavor web pages are released under
@@ -21,7 +21,7 @@
           </div>
 
           <div class="col-sm-6 col-md-3 col-lg-2 col-xl-3">
-            <p class="sponsor">Stavor is sponsored by<br/><a href="http://www.c-s.fr/">CS GROUP</a></p>
+            <p class="sponsor">Stavor is sponsored by<br/><a href="https://www.csgroup.eu/">CS GROUP</a></p>
           </div>
 
         </div>
diff --git a/index.html b/index.html
index 13e77ae23a05dd7cffe6aa068dbb6bdf097b2e33..2f317b1a2f011ea2cbaaaca8ca1fec6a34d7817a 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: 2021-11-16 23:37:19 +01:00
+modified: 2021-12-10 23:49:46 +01:00
 layout: home_orekit
 ---
 
@@ -56,7 +56,7 @@ layout: home_orekit
     <ul class="fa-ul">
 
       <li><span class="fa-li fa-lg fa fa-gears"></span>
-        <p><a href="https://uk.c-s.fr/">CS GROUP</a> develops
+        <p><a href="https://www.csgroup.eu/">CS GROUP</a> develops
           <a href="https://oraas.orekit.space">ORaaS</a> (Orekit-as-a-Service),
           an Orekit-based web service including demos, tools and a REST API to
           access services such as orbit determination.</p>
@@ -126,7 +126,7 @@ layout: home_orekit
     <h2><span class="fa fa-wrench"></span> Development</h2>
 
     <p>Orekit has been in development since 2002 inside
-      <a href="http://www.c-s.fr/">CS GROUP</a> and is still used and
+      <a href="https://www.csgroup.eu/">CS GROUP</a> and is still used and
       maintained by its space dynamics experts. Several major actors of space
       research and industry are now involved into this project.</p>
 
diff --git a/rss.xml b/rss.xml
index e5d8338395ba4c70964b7d65956dd8e80f0864bb..32bc26c9101772ebc13290d594110e8b14fa315d 100644
--- a/rss.xml
+++ b/rss.xml
@@ -20,7 +20,7 @@ title: Orekit RSS feed
       <title>{{ post.title | xml_escape }}</title>
       <link>{{ site.url }}{{ post.url }}</link>
       <pubDate>{{ post.date | date: "%a, %d %b %Y %H:%M:%S %z" }}</pubDate>
-      <author>Orekit Team, orekit@c-s.fr</author>
+      <author>Orekit Team, orekit@csgroup.eu</author>
       <guid>{{ site.url }}{{ post.id }}</guid>
       <description>{{ post.excerpt | xml_escape }}</description>
     </item>
diff --git a/rugged/index.html b/rugged/index.html
index 5f104a313ddde33d1d2d27325e89a5d7efddc53d..da10c111490c5ed5ec0ee05c03db5bc5e0f9ef2b 100644
--- a/rugged/index.html
+++ b/rugged/index.html
@@ -2,7 +2,7 @@
 title: About Rugged
 excerpt: Rugged is a sensor-to-terrain mapping free library
 date: 2016-02-11 15:01:01 +01:00
-modified: 2021-11-16 23:37:19 +01:00
+modified: 2021-12-10 23:50:07 +01:00
 layout: home_rugged
 ---
 
@@ -68,7 +68,7 @@ layout: home_rugged
       </li>
 
       <li><span class="fa-li fa-lg fa fa-gears"></span>
-        <p>Rugged is used for study purposes inside <a href="http://www.c-s.fr/">CS GROUP</a>.</p>
+        <p>Rugged is used for study purposes inside <a href="https://www.csgroup.eu/">CS GROUP</a>.</p>
       </li>
 
     </ul>
@@ -93,7 +93,7 @@ layout: home_rugged
     <h2><span class="fa fa-wrench"></span> Development</h2>
 
     <p>Rugged has been in development since 2014 inside
-    <a href="http://www.c-s.fr/">CS GROUP</a> and is still
+    <a href="https://www.csgroup.eu/">CS GROUP</a> and is still
     used and maintained by its dual teams of space dynamics and image
     processing experts.</p>
 
diff --git a/rugged/overview.html b/rugged/overview.html
index 1b854aa91e435eb481e06dfaddfa2d78f1b600c2..30cecec107291d3321bac17f426ff1d814b7b935 100644
--- a/rugged/overview.html
+++ b/rugged/overview.html
@@ -2,7 +2,7 @@
 title: Rugged Overview
 excerpt: Rugged is a sensor-to-terrain mapping free library
 date: 2019-08-14 17:00:00 +02:00
-modified: 2019-08-31 16:48:33 +02:00
+modified: 2021-12-10 23:45:01 +01:00
 layout: default_rugged
 ---
 
@@ -27,7 +27,7 @@ version 1.7 (or above) libraries at runtime.</p>
 <ul>
   <li>
     <p><strong>Orekit</strong><br/>
-    Copyright &copy; <a href="http://www.c-s.fr/">CS GROUP</a><br/>
+    Copyright &copy; <a href="https://www.csgroup.eu/">CS GROUP</a><br/>
     License: <a href="../license.html">Apache License, version 2.0</a><br/>
     Reference: <a href="..">Orekit</a></p>
   </li>
diff --git a/rugged/rss.xml b/rugged/rss.xml
index 25e69d5343b9205d65115d7c3e2f635e43a9526e..d74054544de53a5a0a5fc7ec38d6b3701c8983f8 100644
--- a/rugged/rss.xml
+++ b/rugged/rss.xml
@@ -20,7 +20,7 @@ title: Rugged RSS feed
       <title>{{ post.title | xml_escape }}</title>
       <link>{{ site.url }}{{ post.url }}</link>
       <pubDate>{{ post.date | date: "%a, %d %b %Y %H:%M:%S %z" }}</pubDate>
-      <author>Rugged Team, rugged@c-s.fr</author>
+      <author>Rugged Team, rugged@csgroup.eu</author>
       <guid>{{ site.url }}{{ post.id }}</guid>
       <description>{{ post.excerpt | xml_escape }}</description>
     </item>
diff --git a/stavor/index.html b/stavor/index.html
index b1a142aef0001b7587efb607c003454c2c7c754f..e85e101a871e75b43e3f4026ef0dc77328d4371e 100644
--- a/stavor/index.html
+++ b/stavor/index.html
@@ -2,7 +2,7 @@
 title : About Stavor
 experpt: Stavor is a spacecraft 3D attitude visualization tool for mobile devices
 date: 2016-11-14 14:46:19 +01:00
-modified: 2018-08-13 08:45:10 +02:00
+modified: 2021-12-10 23:46:57 +01:00
 layout: home_stavor
 ---
 
@@ -41,7 +41,7 @@ layout: home_stavor
     <h2><span class="fa fa-wrench"></span> Development</h2>
 
     <p>Stavor has been in development since 2014 inside
-      <a href="http://www.c-s.fr/">CS GROUP</a>
+      <a href="https://www.csgroup.eu/">CS GROUP</a>
       and is still used and maintained by its dual teams of space dynamics and
       mobile applications experts.</p>
 
diff --git a/stavor/rss.xml b/stavor/rss.xml
index c10f0673c50e4d406c13dcdcd7e91be5c4607f26..de2c5c679cfadc6712dc93215b9f8ca4deb91974 100644
--- a/stavor/rss.xml
+++ b/stavor/rss.xml
@@ -20,7 +20,7 @@ title: Stavor RSS feed
       <title>{{ post.title | xml_escape }}</title>
       <link>{{ site.url }}{{ post.url }}</link>
       <pubDate>{{ post.date | date: "%a, %d %b %Y %H:%M:%S %z" }}</pubDate>
-      <author>Orekit Team, orekit@c-s.fr</author>
+      <author>Orekit Team, orekit@csgroup.eu</author>
       <guid>{{ site.url }}{{ post.id }}</guid>
       <description>{{ post.excerpt | xml_escape }}</description>
     </item>