diff --git a/mypy.ini b/mypy.ini
--- a/mypy.ini
+++ b/mypy.ini
@@ -17,6 +17,9 @@
 [mypy-pytest.*]
 ignore_missing_imports = True
 
+[mypy-iso8601.*]
+ignore_missing_imports = True
+
 [mypy-pytest_kafka.*]
 ignore_missing_imports = True
 
diff --git a/requirements.txt b/requirements.txt
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,3 +5,4 @@
 msgpack
 tenacity
 vcversioner
+iso8601
diff --git a/swh/journal/serializers.py b/swh/journal/serializers.py
--- a/swh/journal/serializers.py
+++ b/swh/journal/serializers.py
@@ -62,6 +62,12 @@
             "origin": object_.origin,
             "date": str(object_.date),
         }
+    elif object_type == "origin_visit_status":
+        return {
+            "origin": object_.origin,
+            "visit": str(object_.visit),
+            "date": str(object_.date),
+        }
     else:
         raise ValueError("Unknown object type: %s." % object_type)
 
diff --git a/swh/journal/tests/journal_data.py b/swh/journal/tests/journal_data.py
--- a/swh/journal/tests/journal_data.py
+++ b/swh/journal/tests/journal_data.py
@@ -3,7 +3,9 @@
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
+import copy
 import datetime
+import iso8601
 
 from typing import Any, Dict, List, Type
 
@@ -16,6 +18,7 @@
     Directory,
     Origin,
     OriginVisit,
+    OriginVisitStatus,
     Release,
     Revision,
     SkippedContent,
@@ -28,6 +31,7 @@
     Directory: "directory",
     Origin: "origin",
     OriginVisit: "origin_visit",
+    OriginVisitStatus: "origin_visit_status",
     Release: "release",
     Revision: "revision",
     SkippedContent: "skipped_content",
@@ -191,6 +195,14 @@
 ]
 
 
+ORIGIN_VISIT_STATUSES = []
+for visit in ORIGIN_VISITS:
+    visit_status = copy.deepcopy(visit)
+    visit_status["date"] = iso8601.parse_date(visit["date"])
+    visit_status.pop("type")
+    ORIGIN_VISIT_STATUSES.append(visit_status)
+
+
 DIRECTORIES = [
     {"id": hash_to_bytes("4b825dc642cb6eb9a060e54bf8d69288fbee4904"), "entries": ()},
     {
@@ -253,6 +265,7 @@
     "directory": DIRECTORIES,
     "origin": ORIGINS,
     "origin_visit": ORIGIN_VISITS,
+    "origin_visit_status": ORIGIN_VISIT_STATUSES,
     "release": RELEASES,
     "revision": REVISIONS,
     "snapshot": SNAPSHOTS,
diff --git a/swh/journal/tests/test_pytest_plugin.py b/swh/journal/tests/test_pytest_plugin.py
--- a/swh/journal/tests/test_pytest_plugin.py
+++ b/swh/journal/tests/test_pytest_plugin.py
@@ -56,6 +56,7 @@
             "directory",
             "origin",
             "origin_visit",
+            "origin_visit_status",
             "release",
             "revision",
             "snapshot",