diff --git a/mattermost/docker-compose.yaml b/mattermost/docker-compose.yaml
index 7bedc42..9057bf6 100644
--- a/mattermost/docker-compose.yaml
+++ b/mattermost/docker-compose.yaml
@@ -58,7 +58,7 @@ services:
       - "traefik.http.services.mattermost-secure.loadbalancer.server.port=8065"
 
   mattermost-db:
-    image: postgres:14-alpine
+    image: postgres:15-alpine
     container_name: mattermost-db
     hostname: mattermost-db
     restart: unless-stopped