diff --git a/coreos-config/plays/services/prometheus/mimir.yml b/coreos-config/plays/services/prometheus/mimir.yml
index a54951d..9876d82 100644
--- a/coreos-config/plays/services/prometheus/mimir.yml
+++ b/coreos-config/plays/services/prometheus/mimir.yml
@@ -20,6 +20,7 @@ blocks_storage:
     bucket_name: mimir-blocks
   tsdb:
     dir: /mimir/tsdb
+    flush_blocks_on_shutdown: true
 
 ingester:
   ring: