diff --git a/roles/mastodon/defaults/main.yml b/roles/mastodon/defaults/main.yml
index 49e2471..a8e137d 100644
--- a/roles/mastodon/defaults/main.yml
+++ b/roles/mastodon/defaults/main.yml
@@ -54,7 +54,7 @@ mastodon_elasticsearch_adjust_sysctl: true
 # renovate: depName=ghcr.io/mastodon/mastodon
 mastodon_version: 4.2.5
 # renovate: depName=docker.io/library/postgres
-mastodon_database_version: 15.5
+mastodon_database_version: 15.6
 # renovate: depName=docker.io/library/redis
 mastodon_redis_version: 7.2
 # renovate: depName=docker.elastic.co/elasticsearch/elasticsearch