diff --git a/admin_manual/configuration_server/email_configuration.rst b/admin_manual/configuration_server/email_configuration.rst
index 25734b6bd..0568e9327 100644
--- a/admin_manual/configuration_server/email_configuration.rst
+++ b/admin_manual/configuration_server/email_configuration.rst
@@ -1,3 +1,5 @@
+.. _email-config:
+
 =====
 Email
 =====
@@ -29,6 +31,8 @@ Sendmail when your mail server is on the same machine as Nextcloud.
    drop-in Sendmail replacement such as Postfix, Exim, or Courier. All of
    these include a ``sendmail`` binary, and are freely-interchangeable.
 
+.. _email-smtp-config:
+
 Configuring an SMTP server
 --------------------------
 
diff --git a/admin_manual/installation/nginx.rst b/admin_manual/installation/nginx.rst
index f86a4c171..62b100754 100644
--- a/admin_manual/installation/nginx.rst
+++ b/admin_manual/installation/nginx.rst
@@ -1,3 +1,5 @@
+.. _nginx-config:
+
 ===================
 NGINX configuration
 ===================
diff --git a/admin_manual/release_notes/index.rst b/admin_manual/release_notes/index.rst
index 209be8135..8c7230cbc 100644
--- a/admin_manual/release_notes/index.rst
+++ b/admin_manual/release_notes/index.rst
@@ -16,6 +16,7 @@ These sub pages will cover the most important changes in Nextcloud, as well as s
 
    upgrade_to_28.rst
    upgrade_to_27.rst
+   upgrade_to_26.rst
 
 Changelog
 ---------
diff --git a/admin_manual/release_notes/upgrade_to_26.rst b/admin_manual/release_notes/upgrade_to_26.rst
new file mode 100644
index 000000000..009a8b2d8
--- /dev/null
+++ b/admin_manual/release_notes/upgrade_to_26.rst
@@ -0,0 +1,19 @@
+=======================
+Upgrade to Nextcloud 26
+=======================
+
+System requirements
+-------------------
+
+* PHP 8.2 is now supported, but 8.1 is recommended.
+* PHP7.4 is no longer supported.
+
+System email
+------------
+
+The software component to send system emails (notifications, invites, password reset, etc) had to be replaced. The new library should work without any changes out of the box for most setups. Only NTLM/Exchange is kown to be no longer supported. See :ref:`email-smtp-config`.
+
+Web server configuration
+------------------------
+
+* The recommended :ref:`nginx configuration<nginx-config>` changed.