diff --git a/Dockerfile b/Dockerfile
index 108b96c..7db09db 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-ARG SYNAPSE_VERSION=1.78.0
+ARG SYNAPSE_VERSION=1.79.0rc1
 ARG HARDENED_MALLOC_VERSION=11
 ARG UID=991
 ARG GID=991