diff --git a/docker/matrix-synapse/Dockerfile b/docker/matrix-synapse/Dockerfile
index d5c3fea..ee12e0d 100644
--- a/docker/matrix-synapse/Dockerfile
+++ b/docker/matrix-synapse/Dockerfile
@@ -1,6 +1,6 @@
 FROM amd64/debian:stretch as builder
 
-ENV VERSION 1.2.1
+ENV VERSION 1.4.0rc1
 
 RUN apt-get update && \
     apt-get -qq -y full-upgrade && \
diff --git a/docker/matrix-synapse/README.md b/docker/matrix-synapse/README.md
index 05e5e1e..922530f 100644
--- a/docker/matrix-synapse/README.md
+++ b/docker/matrix-synapse/README.md
@@ -1,3 +1,3 @@
 ```
-docker build -t superboum/amd64_synapse:v21 .
+docker build -t superboum/amd64_synapse:v22 .
 ```
diff --git a/nomad/chat.hcl b/nomad/chat.hcl
index ab4f513..63b1f56 100644
--- a/nomad/chat.hcl
+++ b/nomad/chat.hcl
@@ -8,7 +8,7 @@ job "chat" {
       driver = "docker"
 
       config {
-        image = "superboum/amd64_synapse:v21"
+        image = "superboum/amd64_synapse:v22"
         readonly_rootfs = true
         port_map {
           client_port = 8008