diff --git a/stack/docker-compose.yml b/stack/docker-compose.yml
index a094a5f9..71f632c0 100644
--- a/stack/docker-compose.yml
+++ b/stack/docker-compose.yml
@@ -2,7 +2,7 @@ name: refarch-stack
 
 services:
   postgres:
-    image: postgres:16.4-alpine3.20@sha256:5660c2cbfea50c7a9127d17dc4e48543eedd3d7a41a595a2dfa572471e37e64c
+    image: postgres:16.9-alpine3.20@sha256:e5507c984377515b8c9922b0eb19f55aba2063fdc7bccf268cefd53133f97054
     environment:
       - POSTGRES_DB=postgres
       - POSTGRES_USER=admin
@@ -67,7 +67,7 @@ services:
     security_opt: *security_settings
 
   db-postgres-keycloak:
-    image: postgres:16.4-alpine3.20@sha256:5660c2cbfea50c7a9127d17dc4e48543eedd3d7a41a595a2dfa572471e37e64c
+    image: postgres:16.9-alpine3.20@sha256:e5507c984377515b8c9922b0eb19f55aba2063fdc7bccf268cefd53133f97054
     environment:
       - POSTGRES_DB=keycloak
       - POSTGRES_USER=keycloak-user