diff --git a/mautrix-telegram/.env.dist b/mautrix-telegram/.env.dist
index 918a725..46be1d1 100644
--- a/mautrix-telegram/.env.dist
+++ b/mautrix-telegram/.env.dist
@@ -4,7 +4,9 @@ IMAGE_VERSION=latest
 HOST_USER=1337
 HOST_GROUP=1337
 
-HOST_DATA_DIR=./data
+# Do not modify unless you know what you're doing!
+# It is used by 'synapse' stack.
+#HOST_DATA_DIR=./data
 
 LOG_MAX_SIZE=5m
 LOG_MAX_FILE=5
\ No newline at end of file
diff --git a/mautrix-telegram/docker-compose.yml b/mautrix-telegram/docker-compose.yml
index 8664e39..54e4092 100644
--- a/mautrix-telegram/docker-compose.yml
+++ b/mautrix-telegram/docker-compose.yml
@@ -6,7 +6,9 @@ services:
     image: "dock.mau.dev/mautrix/telegram:${IMAGE_VERSION:-latest}"
     container_name: mautrix-telegram
     volumes:
-      - "${HOST_DATA_DIR}:/data"
+      # This volume is also used by 'synapse' stack.
+      # Do not change the path unless you know what you're doing.
+      - "${HOST_DATA_DIR:-./data}:/data"
     env_file: .env
     environment:
       UID: "${HOST_USER:-1337}"
diff --git a/synapse/docker-compose.yml b/synapse/docker-compose.yml
index 9c36a37..1da57d3 100644
--- a/synapse/docker-compose.yml
+++ b/synapse/docker-compose.yml
@@ -15,6 +15,9 @@ services:
       - "${DATA_PATH:-./data}:/data"
       # SSL certs directory
       - "${SSL_PATH:-./ssl}:/ssl:ro"
+      # Bridges
+      # Telegram
+      - "../mautrix-telegram/data:/bridges/mautrix-telegram/data:ro"
     env_file: .env
     networks:
       - default