diff --git a/admin_manual/installation/harden_server.rst b/admin_manual/installation/harden_server.rst
index e6314fb3e..ac836b241 100644
--- a/admin_manual/installation/harden_server.rst
+++ b/admin_manual/installation/harden_server.rst
@@ -248,6 +248,8 @@ security headers are shipped.
 .. _Web TLS Profiler: https://tlsprofiler.danielfett.de/
 .. _RFC 4086 ("Randomness Requirements for Security"): https://tools.ietf.org/html/rfc4086#section-5.2
 
+.. _connections_to_remote_servers:
+
 Connections to remote servers
 -----------------------------
 
@@ -255,7 +257,7 @@ Some functionalities require the Nextcloud server to be able to connect remote s
 This paragraph also includes the data which is being transmitted to the Nextcloud GmbH.
 Depending on your server setup, these are the possible connections:
 
-- www.nextcloud.com, www.startpage.com, www.eff.org, www.edri.org, nextcloud.com, startpage.com, eff.org, edri.org
+- connectivity.nextcloud.com, www.eff.org, edri.org
 	- `optional (config)`_
 	- for checking the internet connection
 - cloud.nextcloud.com
diff --git a/admin_manual/release_notes/index.rst b/admin_manual/release_notes/index.rst
index fa92bb8fd..9ad7f465e 100644
--- a/admin_manual/release_notes/index.rst
+++ b/admin_manual/release_notes/index.rst
@@ -14,6 +14,7 @@ These sub pages will cover the most important changes in Nextcloud, as well as s
 .. toctree::
    :maxdepth: 1
 
+   upgrade_to_33.rst
    upgrade_to_32.rst
    upgrade_to_31.rst
    upgrade_to_30.rst
diff --git a/admin_manual/release_notes/upgrade_to_33.rst b/admin_manual/release_notes/upgrade_to_33.rst
new file mode 100644
index 000000000..6ab67ac2a
--- /dev/null
+++ b/admin_manual/release_notes/upgrade_to_33.rst
@@ -0,0 +1,8 @@
+=======================
+Upgrade to Nextcloud 33
+=======================
+
+System configuration
+--------------------
+
+If you configured restrictions on which domains can be contacted on the internet, you need to add connectivity.nextcloud.com to the allowlist, as it’s now used by default to test internet connectivity instead of www.nextcloud.com. You can also configure any other URL to use in the configuration instead. See :ref:`connections_to_remote_servers`.