diff --git a/CHANGELOG b/CHANGELOG
index 0fa47cb..2976b4c 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -474,3 +474,13 @@
 * [Full changelog](https://github.com/matrix-org/synapse/releases/tag/v1.41.1)
 * GHSA-3x4c-pq33-4w3q / CVE-2021-39164: Enumerating a private room's list of members and their display names.
 * GHSA-jj53-8fmw-f2w2 / CVE-2021-39163: Disclosing a private room's name, avatar, topic, and number of members.
+
+[1.31.0]
+* Update Synapse to 1.42.0
+* [Full changelog](https://github.com/matrix-org/synapse/releases/tag/v1.42.0)
+* Support room version 9 from MSC3375. (#10747)
+* Add support for MSC3231: Token authenticated registration. Users can be required to submit a token during registration to authenticate themselves. Contributed by Callum Brown. (#10142)
+* Add support for MSC3283: Expose enable_set_displayname in capabilities. (#10452)
+* Port the PresenceRouter module interface to the new generic interface. (#10524)
+* Add pagination to the spaces summary based on updates to MSC2946. (#10613, #10725)
+
diff --git a/CloudronManifest.json b/CloudronManifest.json
index 8e1e4fa..2c9381b 100644
--- a/CloudronManifest.json
+++ b/CloudronManifest.json
@@ -5,7 +5,7 @@
   "description": "file://DESCRIPTION.md",
   "changelog": "file://CHANGELOG",
   "tagline": "Secure & decentralized communication",
-  "version": "1.30.2",
+  "version": "1.31.0",
   "healthCheckPath": "/",
   "httpPort": 8008,
   "memoryLimit": 536870912,
diff --git a/DESCRIPTION.md b/DESCRIPTION.md
index 5ae8427..710061f 100644
--- a/DESCRIPTION.md
+++ b/DESCRIPTION.md
@@ -1,4 +1,4 @@
-This app packages Synapse <upstream>1.41.1</upstream>.
+This app packages Synapse <upstream>1.42.0</upstream>.
 
 **This package only provides the Matrix backend. A variety of clients are available
 [here](https://matrix.org/clients/). Riot is a popular web frontend for Matrix and
diff --git a/Dockerfile b/Dockerfile
index b8c51cb..7eded8b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,7 +9,7 @@ RUN virtualenv -p python3 /app/code/env
 ENV VIRTUAL_ENV=/app/code/env
 ENV PATH="$VIRTUAL_ENV/bin:$PATH"
 
-ARG VERSION=v1.41.1
+ARG VERSION=v1.42.0
 
 # Synapse (https://github.com/matrix-org/synapse/blob/master/INSTALL.md)
 # lxml - required for previews