diff --git a/docker-compose.yml b/docker-compose.yml
index d0c882a..0a95dc5 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -28,6 +28,11 @@ services:
       POSTGRES_DB: "expertisa-metadata"
     networks:
       - expertisa-twonodes-postgresql
+    volumes:
+      - pgdata-${BRANCH}:/var/lib/postgresql/data
+
+volumes:
+  pgdata-${BRANCH}:
 
 networks:
   expertisa-twonodes-postgresql: