diff --git a/CHANGELOG b/CHANGELOG
index 8ea33a0..73960db 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -439,6 +439,6 @@
 * [Full changelog](https://github.com/matrix-org/synapse/releases/tag/v1.36.0)
 
 [1.26.1]
-* Update Synapse to 1.37.1
-* [Full changelog](https://github.com/matrix-org/synapse/releases/tag/v1.37.1)
+* Update Synapse to 1.38.0
+* [Full changelog](https://github.com/matrix-org/synapse/releases/tag/v1.38.0)
 
diff --git a/DESCRIPTION.md b/DESCRIPTION.md
index 96cccb7..cddb6c3 100644
--- a/DESCRIPTION.md
+++ b/DESCRIPTION.md
@@ -1,4 +1,4 @@
-This app packages Synapse <upstream>1.37.1</upstream>.
+This app packages Synapse <upstream>1.38.0</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 d7e507c..69941d6 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=v1.37.1
+ARG VERSION=v1.38.0
 
 # Synapse (https://github.com/matrix-org/synapse/blob/master/INSTALL.md)
 # lxml - required for previews