diff --git a/logging/loki-config.yaml b/logging/loki-config.yaml
index 2cd09ea..07196d7 100644
--- a/logging/loki-config.yaml
+++ b/logging/loki-config.yaml
@@ -32,7 +32,7 @@ schema_config:
 limits_config:
   reject_old_samples: true
   reject_old_samples_max_age: 168h
-  retention_period: 2160h  # 90 days — adjust to taste, disk on this host is ~42GB free
+  retention_period: 8760h  # 365 days — required minimum; monitor disk usage as fleet onboarding grows (host has ~40GB free)
   max_query_series: 5000
 
 compactor: