diff --git a/compose.yml b/compose.yml
index fac0a4e..e19b623 100644
--- a/compose.yml
+++ b/compose.yml
@@ -58,7 +58,7 @@ services:
         - "traefik.http.middlewares.${STACK_NAME}-redirect.headers.SSLForceHost=true"
         - "traefik.http.middlewares.${STACK_NAME}-redirect.headers.SSLHost=${DOMAIN}"
         - coop-cloud.${STACK_NAME}.timeout=${TIMEOUT:-120}
-        - coop-cloud.${STACK_NAME}.version=0.6.0+1.9.9
+        - coop-cloud.${STACK_NAME}.version=1.0.0+1.9.9
     healthcheck:
       test: "nodejs -e \"http.get('http://localhost:3000', (res) => { console.log('status: ', res.statusCode); if (res.statusCode == 200) { process.exit(0); } else { process.exit(1); } });\""
       interval: 30s
@@ -66,7 +66,7 @@ services:
       retries: 10
       start_period: 1m
   db:
-    image: postgres:11.20-alpine
+    image: postgres:16.1-alpine
     environment:
       - POSTGRES_USER=codimd
       - POSTGRES_PASSWORD_FILE=/run/secrets/db_password
diff --git a/release/1.0.0+1.9 b/release/1.0.0+1.9
new file mode 100644
index 0000000..31ad5ff
--- /dev/null
+++ b/release/1.0.0+1.9
@@ -0,0 +1,7 @@
+WARNING WARNING WARNING 🚨
+
+This release includes a major Postgres database upgrade, but does not yet include tools to automatically upgrade from older Postgres releases.
+
+PLEASE DO NOT UPGRADE EXISTING INSTANCES TO THIS VERSION.
+
+This should be fixed soon.