diff --git a/docker-compose.yml b/docker-compose.yml
index d337060..7bb1fd2 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,6 +1,6 @@
 services:
   postgres:
-    image: postgres:15-alpine
+    image: postgres:18-alpine@sha256:d3e1620b530c944afa6e887d22eb899824da68e19c52024bf98f5220c88a65b2
     ports:
       - "5432:5432"
     environment: