diff --git a/.env.sample b/.env.sample
index ff62576..42ea31e 100644
--- a/.env.sample
+++ b/.env.sample
@@ -5,6 +5,10 @@ DOMAIN=nextcloud.example.com
 #EXTRA_DOMAINS=', `www.nextcloud.example.com`'
 LETS_ENCRYPT_ENV=production
 
+COMPOSE_FILE="compose.yml"
+COMPOSE_FILE="$COMPOSE_FILE:compose.mariadb.yml"
+#COMPOSE_FILE="$COMPOSE_FILE:compose.postgres.yml"
+
 ADMIN_USER=admin
 
 SECRET_DB_ROOT_PASSWORD_VERSION=v1
diff --git a/compose.mariadb.yml b/compose.mariadb.yml
new file mode 100644
index 0000000..956e424
--- /dev/null
+++ b/compose.mariadb.yml
@@ -0,0 +1,40 @@
+version: "3.8"
+
+services:
+  app:
+    environment:
+      - MYSQL_HOST=db
+      - MYSQL_DATABASE=nextcloud
+      - MYSQL_USER=nextcloud
+      - MYSQL_PASSWORD_FILE=/run/secrets/db_password
+
+  db:
+    image: "mariadb:10.5"
+    environment:
+      - MYSQL_DATABASE=nextcloud
+      - MYSQL_USER=nextcloud
+      - MYSQL_PASSWORD_FILE=/run/secrets/db_password
+      - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db_root_password
+    configs:
+      - source: my_tune
+        target: /etc/mysql/conf.d/my-tune.cnf
+    secrets:
+      - db_root_password
+      - db_password
+    volumes:
+      - "mariadb:/var/lib/mysql"
+    networks:
+      - internal
+    deploy:
+      labels:
+          backupbot.backup: "true"
+          backupbot.backup.pre-hook: 'mkdir -p /tmp/backup/ && mysqldump --single-transaction -u root -p"$$(cat /run/secrets/db_root_password)" nextcloud > /tmp/backup/backup.sql'
+          backupbot.backup.post-hook: "rm -rf /tmp/backup"
+          backupbot.backup.path: "/tmp/backup/"
+configs:
+  my_tune:
+    name: ${STACK_NAME}_my_cnf_${MY_CNF_VERSION}
+    file: my-tune.cnf
+
+volumes:
+  mariadb:
diff --git a/compose.postgres.yml b/compose.postgres.yml
new file mode 100644
index 0000000..02fd6f2
--- /dev/null
+++ b/compose.postgres.yml
@@ -0,0 +1,38 @@
+version: '3.8'
+
+services:
+  app:
+    entrypoint: "sh -c 'sleep 10 && /entrypoint.sh php-fpm'" # tries to mitigate this error with postgres https://github.com/nextcloud/docker/issues/1204
+    environment:
+      - POSTGRES_HOST=db
+      - POSTGRES_DB=nextcloud
+      - POSTGRES_USER=nextcloud
+      - POSTGRES_PASSWORD_FILE=/run/secrets/db_password
+      - NEXTCLOUD_UPDATE=1
+
+  db:
+    image: "postgres:12"
+    volumes:
+      - "postgres:/var/lib/postgresql/data"
+    networks:
+      - internal
+    environment:
+      POSTGRES_USER: nextcloud 
+      POSTGRES_PASSWORD_FILE: /run/secrets/db_password
+      POSTGRES_DB: nextcloud 
+    secrets:
+      - db_password
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    deploy:
+      labels:
+            backupbot.backup: "true"
+            backupbot.backup.pre-hook: "mkdir -p /tmp/backup/ && PGPASSWORD=$$(cat $${POSTGRES_PASSWORD_FILE}) pg_dump -U $${POSTGRES_USER} $${POSTGRES_DB} > /tmp/backup/backup.sql"
+            backupbot.backup.post-hook: "rm -rf /tmp/backup"
+            backupbot.backup.path: "/tmp/backup/"
+
+volumes:
+  postgres:
diff --git a/compose.yml b/compose.yml
index 4333544..2f8676d 100644
--- a/compose.yml
+++ b/compose.yml
@@ -33,7 +33,7 @@ services:
         - "traefik.http.middlewares.${STACK_NAME}-redirect.headers.SSLHost=${DOMAIN}"
 
   app:
-    image: nextcloud:23.0.1-fpm
+    image: nextcloud:23.0.3-fpm
     depends_on:
       - db
     configs:
@@ -45,10 +45,6 @@ services:
     environment:
       - DOMAIN
       - STACK_NAME
-      - MYSQL_HOST=db
-      - MYSQL_DATABASE=nextcloud
-      - MYSQL_USER=nextcloud
-      - MYSQL_PASSWORD_FILE=/run/secrets/db_password
       - NEXTCLOUD_ADMIN_USER=${ADMIN_USER}
       - NEXTCLOUD_ADMIN_PASSWORD_FILE=/run/secrets/admin_password
       - NEXTCLOUD_TRUSTED_DOMAINS=${DOMAIN}
@@ -73,28 +69,13 @@ services:
         failure_action: rollback
         order: start-first
       labels:
-        - "coop-cloud.${STACK_NAME}.version=1.0.0+23.0.1-fpm"
+        - "coop-cloud.${STACK_NAME}.version=2.0.0+23.0.3-fpm"
+        - "backupbot.backup=true"
+        - "backupbot.backup.path=/var/www/html/config/,/var/www/html/data/,/var/www/html/custom_apps/"
 
-  db:
-    image: "mariadb:10.5"
-    environment:
-      - MYSQL_DATABASE=nextcloud
-      - MYSQL_USER=nextcloud
-      - MYSQL_PASSWORD_FILE=/run/secrets/db_password
-      - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db_root_password
-    configs:
-      - source: my_tune
-        target: /etc/mysql/conf.d/my-tune.cnf
-    secrets:
-      - db_root_password
-      - db_password
-    volumes:
-      - "mariadb:/var/lib/mysql"
-    networks:
-      - internal
 
   cron:
-    image: nextcloud:23.0.1-fpm
+    image: nextcloud:23.0.3-fpm
     volumes:
       - nextcloud:/var/www/html/
       - nextapps:/var/www/html/custom_apps:cached
@@ -128,7 +109,6 @@ volumes:
   nextapps:
   nextdata:
   nextconfig:
-  mariadb:
   redis:
 
 configs:
@@ -139,9 +119,6 @@ configs:
   fpm_tune:
     name: ${STACK_NAME}_fpm_tune_${FPM_TUNE_VERSION}
     file: fpm-tune.ini
-  my_tune:
-    name: ${STACK_NAME}_my_cnf_${MY_CNF_VERSION}
-    file: my-tune.cnf
 
 networks:
   proxy:
diff --git a/releases/2.0.0+23.0.3-fpm b/releases/2.0.0+23.0.3-fpm
new file mode 100644
index 0000000..3dead5b
--- /dev/null
+++ b/releases/2.0.0+23.0.3-fpm
@@ -0,0 +1,6 @@
+2.0.0 introduces a minor nextcloud update to 23.0.3 and moves the database service to a seperate override.yml file to support different database types (mariadb / postgres). This might break your installation. Please add the following snippet to your config .env to ensure the right db is used:
+
+```
+COMPOSE_FILE="compose.yml"
+COMPOSE_FILE="$COMPOSE_FILE:compose.mariadb.yml"
+```