diff --git a/roles/postgres/defaults/main.yml b/roles/postgres/defaults/main.yml
index 2268619..52355ec 100644
--- a/roles/postgres/defaults/main.yml
+++ b/roles/postgres/defaults/main.yml
@@ -108,7 +108,7 @@ postgres_base_config:
     line: "archive_command = 'cp -f %p /postgresql/replication/%f'"
   -
     regex: "^wal_keep_size"
-    line: "wal_keep_size = 16"
+    line: "wal_keep_size = 100"
   -
     regex: "^listen_addresses = "
     line: "{{ postgres_listen_addresses }}"