diff --git a/configuration.yaml b/configuration.yaml
index a7b5670..28b63ab 100644
--- a/configuration.yaml
+++ b/configuration.yaml
@@ -68,4 +68,5 @@ climate:
     k1: !secret master_bedroom_ac_key
 
 recorder:
-  db_url: !secret mariadb_url
\ No newline at end of file
+  db_url: !secret mariadb_url
+  purge_keep_days: 30
\ No newline at end of file