diff --git a/README.rst b/README.rst
index 4a90429647..85d4a26352 100644
--- a/README.rst
+++ b/README.rst
@@ -2,10 +2,14 @@
Synapse |support| |development| |documentation| |license| |pypi| |python|
=========================================================================
-Synapse is an open-source `Matrix `_ homeserver written and
-maintained by the Matrix.org Foundation. We began rapid development in 2014,
-reaching v1.0.0 in 2019. Development on Synapse and the Matrix protocol itself continues
-in earnest today.
+Synapse is now actively maintained at `vector-im/synapse `_
+=================================================================================================
+
+Synapse is an open-source `Matrix `_ homeserver developed
+from 2014 through 2023 as part of the Matrix.org Foundation. The Matrix.org
+Foundation is not able to resource maintenance of Synapse and it
+`continues to be developed by Element `_;
+additionally you have the choice of `other Matrix homeservers `_.
Briefly, Matrix is an open standard for communications on the internet, supporting
federation, encryption and VoIP. Matrix.org has more to say about the `goals of the
diff --git a/synapse/__init__.py b/synapse/__init__.py
index 4a9bbc4d57..25928a60d2 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -29,6 +29,12 @@ from synapse.util.stringutils import strtobool
# Allow truncated JPEG images to be thumbnailed.
ImageFile.LOAD_TRUNCATED_IMAGES = True
+# Update your remotes folks.
+print("Synapse is no longer being developed under the matrix-org organization.")
+print("Please update your git remote to pull from vector-im/synapse:")
+print(" git remote set-url origin git@github.com:vector-im/synapse.git")
+sys.exit(1)
+
# Check that we're not running on an unsupported Python version.
#
# Note that we use an (unneeded) variable here so that pyupgrade doesn't nuke the