diff --git a/swh/deposit/parsers.py b/swh/deposit/parsers.py
--- a/swh/deposit/parsers.py
+++ b/swh/deposit/parsers.py
@@ -46,7 +46,16 @@
         """
         parser_context = parser_context or {}
         encoding = parser_context.get("encoding", settings.DEFAULT_CHARSET)
-        data = xmltodict.parse(stream, encoding=encoding, process_namespaces=False)
+        namespaces = {
+            "http://www.w3.org/2005/Atom": None,
+            "http://purl.org/dc/terms/": None,
+            "https://doi.org/10.5063/SCHEMA/CODEMETA-2.0": "codemeta",
+            "http://purl.org/net/sword/": "sword",
+        }
+
+        data = xmltodict.parse(
+            stream, encoding=encoding, namespaces=namespaces, process_namespaces=True
+        )
         if "entry" in data:
             data = data["entry"]
         return data
diff --git a/swh/deposit/tests/api/test_deposit_private_read_metadata.py b/swh/deposit/tests/api/test_deposit_private_read_metadata.py
--- a/swh/deposit/tests/api/test_deposit_private_read_metadata.py
+++ b/swh/deposit/tests/api/test_deposit_private_read_metadata.py
@@ -69,7 +69,6 @@
             },
             "origin_metadata": {
                 "metadata": {
-                    "@xmlns": ["http://www.w3.org/2005/Atom"],
                     "author": ["some awesome author", "another one", "no one"],
                     "codemeta:dateCreated": "2017-10-07T15:17:08Z",
                     "external_identifier": "some-external-id",
@@ -145,7 +144,6 @@
             },
             "origin_metadata": {
                 "metadata": {
-                    "@xmlns": ["http://www.w3.org/2005/Atom"],
                     "author": ["some awesome author", "another one", "no one"],
                     "codemeta:dateCreated": "2017-10-07T15:17:08Z",
                     "external_identifier": "some-external-id",
@@ -218,8 +216,6 @@
         data = response.json()
 
         metadata = {
-            "@xmlns": ["http://www.w3.org/2005/Atom"],
-            "@xmlns:codemeta": "https://doi.org/10.5063/SCHEMA/CODEMETA-2.0",
             "author": [
                 "some awesome author",
                 "another one",
@@ -322,8 +318,6 @@
         data = response.json()
 
         metadata = {
-            "@xmlns": "http://www.w3.org/2005/Atom",
-            "@xmlns:codemeta": "https://doi.org/10.5063/SCHEMA/CODEMETA-2.0",
             "author": {"email": "hal@ccsd.cnrs.fr", "name": "HAL"},
             "client": "hal",
             "codemeta:applicationCategory": "test",
@@ -445,8 +439,6 @@
         }
 
         metadata = {
-            "@xmlns": "http://www.w3.org/2005/Atom",
-            "@xmlns:codemeta": "https://doi.org/10.5063/SCHEMA/CODEMETA-2.0",
             "author": {"email": "hal@ccsd.cnrs.fr", "name": "HAL"},
             "client": "hal",
             "codemeta:applicationCategory": "test",
diff --git a/swh/deposit/tests/api/test_parser.py b/swh/deposit/tests/api/test_parser.py
--- a/swh/deposit/tests/api/test_parser.py
+++ b/swh/deposit/tests/api/test_parser.py
@@ -32,8 +32,6 @@
     actual_result = SWHXMLParser().parse(xml_no_duplicate)
     expected_dict = OrderedDict(
         [
-            ("@xmlns", "http://www.w3.org/2005/Atom"),
-            ("@xmlns:codemeta", "https://doi.org/10.5063/SCHEMA/CODEMETA-2.0"),
             ("title", "Awesome Compiler"),
             (
                 "codemeta:license",
@@ -92,8 +90,6 @@
 
     expected_dict = OrderedDict(
         [
-            ("@xmlns", "http://www.w3.org/2005/Atom"),
-            ("@xmlns:codemeta", "https://doi.org/10.5063/SCHEMA/CODEMETA-2.0"),
             ("title", "Another Compiler"),
             ("codemeta:runtimePlatform", ["GNU/Linux", "Un*x"]),
             (
diff --git a/swh/deposit/tests/data/atom/entry-data3.xml b/swh/deposit/tests/data/atom/entry-data3.xml
--- a/swh/deposit/tests/data/atom/entry-data3.xml
+++ b/swh/deposit/tests/data/atom/entry-data3.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<entry xmlns="http://www.w3.org/2005/Atom">
+<entry xmlns="http://www.w3.org/2005/Atom" xmlns:codemeta="https://doi.org/10.5063/SCHEMA/CODEMETA-2.0">
   <author>another one</author>
   <author>no one</author>
   <codemeta:dateCreated>2017-10-07T15:17:08Z</codemeta:dateCreated>