diff --git a/docker-compose.build.yml b/docker-compose.build.yml
index 71a03a2..772944a 100644
--- a/docker-compose.build.yml
+++ b/docker-compose.build.yml
@@ -35,3 +35,8 @@ services:
     ports:
       - "5432:5432"
     env_file: .env # set POSTGRES_USER, POSTGRES_PASSWORD, POSTGRES_DB
+    volumes:
+      - database-data:/var/lib/postgresql/data
+
+volumes:
+  database-data:
\ No newline at end of file
diff --git a/docker-compose.yml b/docker-compose.yml
index 8eed245..1e7e832 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -31,3 +31,8 @@ services:
     ports:
       - "5432:5432"
     env_file: .env # set POSTGRES_USER, POSTGRES_PASSWORD, POSTGRES_DB
+    volumes:
+      - database-data:/var/lib/postgresql/data
+
+volumes:
+  database-data: