diff --git a/swh/lister/maven/lister.py b/swh/lister/maven/lister.py
--- a/swh/lister/maven/lister.py
+++ b/swh/lister/maven/lister.py
@@ -302,6 +302,7 @@
                             "gid": page["gid"],
                             "aid": page["aid"],
                             "version": page["version"],
+                            "base_url": self.BASE_URL,
                         }
                     ]
                 },
diff --git a/swh/lister/maven/tests/test_lister.py b/swh/lister/maven/tests/test_lister.py
--- a/swh/lister/maven/tests/test_lister.py
+++ b/swh/lister/maven/tests/test_lister.py
@@ -122,6 +122,7 @@
                     assert src.get("gid") == artifact["gid"]
                     assert src.get("aid") == artifact["aid"]
                     assert src.get("version") == artifact["version"]
+                    assert MVN_URL == artifact["base_url"]
                     break
             else:
                 raise AssertionError