diff --git a/docker-compose.postgres.yml b/docker-compose.postgres.yml
index b94a7677..e94c6130 100644
--- a/docker-compose.postgres.yml
+++ b/docker-compose.postgres.yml
@@ -12,7 +12,7 @@ services:
       - DATABASE_URL=postgres://guardian:${POSTGRES_PASSWORD:?set POSTGRES_PASSWORD in .env}@postgres:5432/guardian
 
   postgres:
-    image: postgres:16-alpine
+    image: postgres:18-alpine
     ports:
       - "5432:5432"
     volumes:
diff --git a/docker-compose.registry.yml b/docker-compose.registry.yml
index 767af5e5..258ed7fa 100644
--- a/docker-compose.registry.yml
+++ b/docker-compose.registry.yml
@@ -34,7 +34,7 @@ services:
       - DATABASE_URL=postgres://guardian:${POSTGRES_PASSWORD:?set POSTGRES_PASSWORD in .env.registry}@postgres:5432/guardian
 
   postgres:
-    image: postgres:16-alpine
+    image: postgres:18-alpine
     volumes:
       - guardian-postgres:/var/lib/postgresql/data
     environment: