diff --git a/CHANGES.md b/CHANGES.md
index f948869501..75dc5fa893 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,8 +1,21 @@
+Synapse 1.21.1 (2020-10-13)
+===========================
+
+This release fixes a regression in v1.21.0 that prevented debian packages from being built.
+It is otherwise identical to v1.21.0.
+
Synapse 1.21.0 (2020-10-12)
===========================
No significant changes since v1.21.0rc3.
+As [noted in
+v1.20.0](https://github.com/matrix-org/synapse/blob/release-v1.21.0/CHANGES.md#synapse-1200-2020-09-22),
+a future release will drop support for accessing Synapse's
+[Admin API](https://github.com/matrix-org/synapse/tree/master/docs/admin_api) under the
+`/_matrix/client/*` endpoint prefixes. At that point, the Admin API will only
+be accessible under `/_synapse/admin`.
+
Synapse 1.21.0rc3 (2020-10-08)
==============================
@@ -160,9 +173,11 @@ API](https://github.com/matrix-org/synapse/tree/master/docs) has been
accessible under the `/_matrix/client/api/v1/admin`,
`/_matrix/client/unstable/admin`, `/_matrix/client/r0/admin` and
`/_synapse/admin` prefixes. In a future release, we will be dropping support
-for accessing Synapse's Admin API using the `/_matrix/client/*` prefixes. This
-makes it easier for homeserver admins to lock down external access to the Admin
-API endpoints.
+for accessing Synapse's Admin API using the `/_matrix/client/*` prefixes.
+
+From that point, the Admin API will only be accessible under `/_synapse/admin`.
+This makes it easier for homeserver admins to lock down external access to the
+Admin API endpoints.
Synapse 1.20.0rc5 (2020-09-18)
==============================
diff --git a/debian/build_virtualenv b/debian/build_virtualenv
index 4c9aabcac3..cbdde93f96 100755
--- a/debian/build_virtualenv
+++ b/debian/build_virtualenv
@@ -42,7 +42,7 @@ dh_virtualenv \
--preinstall="mock" \
--extra-pip-arg="--no-cache-dir" \
--extra-pip-arg="--compile" \
- --extras="all,systemd"
+ --extras="all,systemd,test"
PACKAGE_BUILD_DIR="debian/matrix-synapse-py3"
VIRTUALENV_DIR="${PACKAGE_BUILD_DIR}${DH_VIRTUALENV_INSTALL_ROOT}/matrix-synapse"
diff --git a/debian/changelog b/debian/changelog
index a08782f587..eeafd4f50a 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,13 @@
+matrix-synapse-py3 (1.21.1) stable; urgency=medium
+
+ [ Synapse Packaging team ]
+ * New synapse release 1.21.1.
+
+ [ Andrew Morgan ]
+ * Explicitly install "test" python dependencies.
+
+ -- Synapse Packaging team <packages@matrix.org> Tue, 13 Oct 2020 10:24:13 +0100
+
matrix-synapse-py3 (1.21.0) stable; urgency=medium
* New synapse release 1.21.0.
diff --git a/synapse/__init__.py b/synapse/__init__.py
index 57f818125a..722b53a67d 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -48,7 +48,7 @@ try:
except ImportError:
pass
-__version__ = "1.21.0"
+__version__ = "1.21.1"
if bool(os.environ.get("SYNAPSE_TEST_PATCH_LOG_CONTEXTS", False)):
# We import here so that we don't have to install a bunch of deps when
|