diff --git a/cluster/services/patroni/worker.nix b/cluster/services/patroni/worker.nix
index de5333f..7681212 100644
--- a/cluster/services/patroni/worker.nix
+++ b/cluster/services/patroni/worker.nix
@@ -73,6 +73,7 @@ in
           hot_standby_feedback = "on";
           unix_socket_directories = "/tmp";
           synchronous_commit = "on";
+          wal_keep_size = 2048;
         };
         pg_hba = [
           "host replication patronirep ${net} scram-sha-256"