diff --git a/synapse/docker-compose.yml b/synapse/docker-compose.yml
index e17a2b5..94f6513 100644
--- a/synapse/docker-compose.yml
+++ b/synapse/docker-compose.yml
@@ -7,6 +7,8 @@ services:
       - ${MAUTRIX_WHATSAPP_DATA_DIR}:/data
     depends_on:
       - mautrix-whatsapp_db
+    networks:
+    - synapsenet
   mautrix-whatsapp_db:
     image: docker.io/library/postgres:17
     restart: unless-stopped
@@ -28,6 +30,8 @@ services:
       - "8090:8090"
     depends_on:
       - mas_db
+    networks:
+      - synapsenet
   mas_db:
     image: docker.io/library/postgres:17
     restart: unless-stopped
@@ -58,4 +62,9 @@ services:
       - synapse_db
       - mas
       - mautrix-whatsapp
-
+    networks:
+      - synapsenet
+networks:
+  synapsenet:
+    external:
+      name: synapsenet