diff --git a/Dockerfile b/Dockerfile
index 5f61da7..04339ab 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-ARG SYNAPSE_VERSION=1.65.0
+ARG SYNAPSE_VERSION=1.66.0
 ARG PYTHON_VERSION=3.10
 ARG ALPINE_VERSION=3.16
 ARG HARDENED_MALLOC_VERSION=11