diff --git a/Containerfile b/Containerfile
index 04a6770..808eb82 100644
--- a/Containerfile
+++ b/Containerfile
@@ -13,7 +13,7 @@ RUN apk add --no-cache \
   poetry \
   git
 
-ENV VERSION=v1.103.0
+ENV VERSION=v1.104.0
 RUN git clone https://github.com/element-hq/synapse.git
 WORKDIR /synapse
 RUN git checkout $VERSION