diff --git a/Dockerfile b/Dockerfile
index 9f7ac7a..8593a07 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.io/matrixdotorg/synapse:v1.149.1
+FROM docker.io/matrixdotorg/synapse:v1.156.0
 
 LABEL org.opencontainers.image.source=https://github.com/SeaGL/matrix-synapse-dev-image
 LABEL org.opencontainers.image.description="Developer environment-optimized Matrix Synapse image"