diff --git a/Documentation/mainpage.dox b/Documentation/mainpage.dox
index 063eaccb9d130382ac0e33f448f147b7822e1842..bbbd5d8cdcb19a87d23f5bd2e5d99ffce43b68a1 100644
--- a/Documentation/mainpage.dox
+++ b/Documentation/mainpage.dox
@@ -7,7 +7,7 @@
  * - Wiki: https://svn.ufz.de/ogs
  * - Developer guide: http://docs.opengeosys.org/docs/devguide
  * - Data Explorer (Gui) manual: http://docs.opengeosys.org/assets/releases/head/docs/DataExplorer-Manual.pdf
- * - Mailing list: https://groups.google.com/forum/#!forum/ogs-users
+ * - Discussion forum: https://discourse.opengeosys.org
  * - Jenkins build server: https://svn.ufz.de/hudson
  *
  *
diff --git a/web/content/_index.pandoc b/web/content/_index.pandoc
index 250ab37d8ea42879dedad26ba8b7f9d648b370f8..4b1512d2f1c099f0e74d40351175041c3f374a01 100644
--- a/web/content/_index.pandoc
+++ b/web/content/_index.pandoc
@@ -131,7 +131,7 @@ features:
           url: /docs/devguide
     - headline: Become part of the Community
       textline: |
-        Get in touch with the OpenGeoSys Community via the [Mailing List](https://groups.google.com/forum/#!forum/ogs-users), [GitHub](https://github.com/ufz/ogs) or by [email](mailto:info@opengeosys.org).
+        Get in touch with the OpenGeoSys Community via our [Discussion forum](https://discourse.opengeosys.org), [GitHub](https://github.com/ufz/ogs) or by [email](mailto:info@opengeosys.org).
       links:
         - text: <i class="fab fa-github"></i> GitHub
           url: https://github.com/ufz/ogs
diff --git a/web/content/docs/_index.pandoc b/web/content/docs/_index.pandoc
index 8f53309114f007c8bc551a257cfffb4f54abf4c3..55b2439dd226efd36c98e5db53d52e0c520054ac 100644
--- a/web/content/docs/_index.pandoc
+++ b/web/content/docs/_index.pandoc
@@ -43,10 +43,4 @@ url = "https://ufz.github.io/styleguide/cppguide.xml"
 text = "OpenGeoSys C++ Style Guide"
 icon = "fal fa-file-check"
 
-[[sections]]
-name = "Mailing List"
-url = "https://groups.google.com/forum/#!forum/ogs-users"
-text = "The mailing lists for OpenGeoSys users and developers are a good place to ask question related to anything OGS."
-icon = "fal fa-mail-bulk"
-
 +++
diff --git a/web/content/ogs-5/index.pandoc b/web/content/ogs-5/index.pandoc
index 7b5a6f0fa37f8990ab41f472bffbf9c48338f9b0..23a19f54c197b2f5c3a558c87faa25ad2766f5c8 100644
--- a/web/content/ogs-5/index.pandoc
+++ b/web/content/ogs-5/index.pandoc
@@ -5,7 +5,7 @@ aliases = [ "/download5/",           # Redirect for Hydrology II tutorial
             "/resources/downloads" ] # Redirect for Hydrology I tutorial
 +++
 
-As OGS-6 is a reimplementation of OGS-5 with new concepts and methodologies there will probably never be complete feature parity. We provide binaries of OpenGeoSys-5 ready for you to use. Support is limited but you may ask questions or report bugs via the [ogs-users](https://groups.google.com/forum/#!forum/ogs-users) mailing list.
+As OGS-6 is a reimplementation of OGS-5 with new concepts and methodologies there will probably never be complete feature parity. We provide binaries of OpenGeoSys-5 ready for you to use. Support is limited but you may ask questions or report bugs via our [discussion forum](https://discourse.opengeosys.org/tags/ogs5) mailing list.
 
 ## Downloads