diff --git a/swh/lister/nixguix/lister.py b/swh/lister/nixguix/lister.py
--- a/swh/lister/nixguix/lister.py
+++ b/swh/lister/nixguix/lister.py
@@ -21,6 +21,7 @@
 import logging
 from pathlib import Path
 import random
+from random import shuffle
 from typing import Any, Dict, Iterator, List, Optional, Tuple, Union
 from urllib.parse import urlparse
 
@@ -264,7 +265,10 @@
         # grep '"type"' nixpkgs-sources-unstable.json | sort | uniq
         #  "type": "url",
 
-        for artifact in raw_data["sources"]:
+        sources = raw_data["sources"]
+        shuffle(sources)
+
+        for artifact in sources:
             artifact_type = artifact["type"]
             if artifact_type in VCS_SUPPORTED:
                 plain_url = artifact[VCS_KEYS_MAPPING[artifact_type]["url"]]