diff --git a/docker-compose.yml b/docker-compose.yml
index 016cc46..c8495f8 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -155,7 +155,7 @@ services:
   # of truth); the schema itself is created by `db upgrade` (alembic).
   # ==========================================================================
   postgres:
-    image: postgres:18-alpine
+    image: postgres:17-alpine
     container_name: ${COMPOSE_PROJECT_NAME:-hub}-postgres
     profiles:
       - postgres