diff --git a/recipes/compose.yaml b/recipes/compose.yaml
index a91fae1..0289d7d 100644
--- a/recipes/compose.yaml
+++ b/recipes/compose.yaml
@@ -5,7 +5,7 @@ x-hardening: &hardening
 services:
   db_recipes:
     <<: *hardening
-    image: postgres:16.14-alpine # exact pin, not the floating 16-alpine tag, so Renovate proposes bumps one at a time
+    image: postgres:18.4-alpine # exact pin, not the floating 16-alpine tag, so Renovate proposes bumps one at a time
     container_name: db_recipes
     restart: unless-stopped
     environment:
diff --git a/sparkyfitness/compose.yaml b/sparkyfitness/compose.yaml
index 3bf4863..9eedc72 100644
--- a/sparkyfitness/compose.yaml
+++ b/sparkyfitness/compose.yaml
@@ -9,7 +9,7 @@ x-hardening: &hardening
 services:
   sparkyfitness-db:
     <<: *hardening
-    image: postgres:18.3-alpine # upstream's own tested pin
+    image: postgres:18.4-alpine # upstream's own tested pin
     container_name: sparkyfitness-db
     restart: unless-stopped
     environment: