diff --git a/kubernetes/apps/monitoring/helmrelease-loki.yaml b/kubernetes/apps/monitoring/helmrelease-loki.yaml
index 6d0af323..a0294741 100644
--- a/kubernetes/apps/monitoring/helmrelease-loki.yaml
+++ b/kubernetes/apps/monitoring/helmrelease-loki.yaml
@@ -39,8 +39,14 @@ spec:
         replication_factor: 1
       storage:
         type: filesystem
+      # retention_period is only enforced by the compactor with
+      # retention_enabled; Loki keeps logs forever otherwise.
+      compactor:
+        working_directory: /var/loki/compactor
+        retention_enabled: true
+        delete_request_store: filesystem
       limits_config:
-        retention_period: 2160h
+        retention_period: 8760h
         ingestion_rate_mb: 10
         ingestion_burst_size_mb: 20
         max_streams_per_user: 10000