diff --git a/mattermost/docker-compose.yml b/mattermost/docker-compose.yml
index 1f9938f..b55f456 100644
--- a/mattermost/docker-compose.yml
+++ b/mattermost/docker-compose.yml
@@ -2,7 +2,7 @@ version: "3.8"
 
 services:
   db:
-    image: postgres:12.15-alpine
+    image: postgres:12.18-alpine
     restart: unless-stopped
     volumes:
       - ${DATA_PATH}/db/var/lib/postgresql/data:/var/lib/postgresql/data