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
@@ -258,9 +258,9 @@
 
         logger.info("Fetching poms..")
         for pom in out_pom:
-            text = self.page_request(pom, {})
             try:
-                project = xmltodict.parse(text.content.decode())
+                response = self.page_request(pom, {})
+                project = xmltodict.parse(response.content.decode())
                 if "scm" in project["project"]:
                     if "connection" in project["project"]["scm"]:
                         scm = project["project"]["scm"]["connection"]
@@ -278,6 +278,11 @@
                         logger.debug("No scm.connection in pom %s", pom)
                 else:
                     logger.debug("No scm in pom %s", pom)
+            except requests.HTTPError:
+                logger.warning(
+                    "POM info page could not be fetched, skipping project '%s'",
+                    pom,
+                )
             except xmltodict.expat.ExpatError as error:
                 logger.info("Could not parse POM %s XML: %s. Next.", pom, error)
 
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
@@ -291,35 +291,37 @@
 
 
 @pytest.mark.parametrize("http_code", [400, 404, 500, 502])
-def test_maven_list_http_error(
+def test_maven_list_http_error_on_index_read(
     swh_scheduler, requests_mock, mocker, maven_index, http_code
 ):
-    """Test handling of some common HTTP errors:
-    - 400: Bad request.
-    - 404: Resource no found.
-    - 500: Internal server error.
-    - 502: Bad gateway ou proxy Error.
-    """
+    """should stop listing if the lister fails to retrieve the main index url."""
 
     lister = MavenLister(scheduler=swh_scheduler, url=MVN_URL, index_url=INDEX_URL)
-
-    # Test failure of index retrieval.
-
     requests_mock.get(INDEX_URL, status_code=http_code)
-
-    with pytest.raises(requests.HTTPError):
+    with pytest.raises(requests.HTTPError):  # listing cannot continues so stop
         lister.run()
 
-    # Test failure of artefacts retrieval.
+    scheduler_origins = swh_scheduler.get_listed_origins(lister.lister_obj.id).results
+    assert len(scheduler_origins) == 0
+
 
+@pytest.mark.parametrize("http_code", [400, 404, 500, 502])
+def test_maven_list_http_error_artifacts(
+    swh_scheduler, requests_mock, mocker, maven_index, http_code, maven_pom_2
+):
+    """should continue listing when failing to retrieve artifacts."""
+    # Test failure of artefacts retrieval.
     requests_mock.get(INDEX_URL, text=maven_index)
     requests_mock.get(URL_POM_1, status_code=http_code)
+    requests_mock.get(URL_POM_2, text=maven_pom_2)
 
-    with pytest.raises(requests.HTTPError):
-        lister.run()
+    lister = MavenLister(scheduler=swh_scheduler, url=MVN_URL, index_url=INDEX_URL)
+
+    # on artifacts though, that raises but continue listing
+    lister.run()
 
     # If the maven_index step succeeded but not the get_pom step,
     # then we get only the 2 maven-jar origins (and not the 2 additional
     # src origins).
     scheduler_origins = swh_scheduler.get_listed_origins(lister.lister_obj.id).results
-    assert len(scheduler_origins) == 2
+    assert len(scheduler_origins) == 3