diff --git a/borgmatic/commands/borgmatic.py b/borgmatic/commands/borgmatic.py
index 919ce117..b44c37ce 100644
--- a/borgmatic/commands/borgmatic.py
+++ b/borgmatic/commands/borgmatic.py
@@ -155,7 +155,7 @@ def _run_commands(args, consistency, local_path, location, remote_path, retentio
             unexpanded_repository,
         )
     if args.json:
-        sys.stdout.write(json.dumps(json_results))
+        sys.stdout.write(json.dumps(json_results, indent=2))
 
 
 def _run_commands_on_repository(