diff --git a/CHANGELOG b/CHANGELOG
index a1fdcca..da1ae02 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -549,3 +549,13 @@
 * Update Synapse to 1.51.0
 * [Full changelog](https://github.com/matrix-org/synapse/releases/tag/v1.51.0)
 
+[1.38.5]
+* Update Synapse to 1.52.0
+* [Full changelog](https://github.com/matrix-org/synapse/releases/tag/v1.52.0)
+* Remove account data (including client config, push rules and ignored users) upon user deactivation. (#11621, #11788, #11789)
+* Add an admin API to reset connection timeouts for remote server. (#11639)
+* Add an admin API to get a list of rooms that federate with a given remote homeserver. (#11658)
+* Add a config flag to inhibit M_USER_IN_USE during registration. (#11743)
+* Add a module callback to set username at registration. (#11790)
+* Allow configuring a maximum file size as well as a list of allowed content types for avatars. (#11846)
+
diff --git a/CloudronManifest.json b/CloudronManifest.json
index 02b1b2b..46ba1d2 100644
--- a/CloudronManifest.json
+++ b/CloudronManifest.json
@@ -5,7 +5,7 @@
   "description": "file://DESCRIPTION.md",
   "changelog": "file://CHANGELOG",
   "tagline": "Secure & decentralized communication",
-  "version": "1.38.4",
+  "version": "1.38.5",
   "healthCheckPath": "/",
   "httpPort": 8008,
   "memoryLimit": 536870912,
diff --git a/DESCRIPTION.md b/DESCRIPTION.md
index 645f35f..a6cbbdf 100644
--- a/DESCRIPTION.md
+++ b/DESCRIPTION.md
@@ -1,4 +1,4 @@
-This app packages Synapse <upstream>1.51.0</upstream>.
+This app packages Synapse <upstream>1.52.0</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 f65e59d..5cf99d9 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=v1.51.0
+ARG VERSION=v1.52.0
 
 # Synapse (https://github.com/matrix-org/synapse/blob/master/INSTALL.md)
 # lxml - required for previews