diff --git a/lemmy-stack/docker-compose.yml b/lemmy-stack/docker-compose.yml
index aea88262..831567bb 100644
--- a/lemmy-stack/docker-compose.yml
+++ b/lemmy-stack/docker-compose.yml
@@ -101,7 +101,7 @@ services:
     logging: *default-logging
 
   postgres:
-    image: postgres:15-alpine
+    image: postgres:18-alpine
     # this needs to match the database host in lemmy.hson
     # Tune your settings via
     # https://pgtune.leopard.in.ua/#/