diff --git a/swh/storage/cassandra/storage.py b/swh/storage/cassandra/storage.py
--- a/swh/storage/cassandra/storage.py
+++ b/swh/storage/cassandra/storage.py
@@ -228,6 +228,7 @@
             if counter >= limit:
                 next_page_token = str(tok)
                 break
+            row_d.pop("ctime")
             contents.append(Content(**row_d))
 
         assert len(contents) <= limit
diff --git a/swh/storage/tests/storage_tests.py b/swh/storage/tests/storage_tests.py
--- a/swh/storage/tests/storage_tests.py
+++ b/swh/storage/tests/storage_tests.py
@@ -523,6 +523,7 @@
         assert len(actual_contents) == len(expected_contents)
         for content in actual_contents:
             assert content in expected_contents
+            assert content.ctime is None
 
     def test_content_get_partition_full(self, swh_storage, swh_contents):
         """content_get_partition for a single partition returns all available contents
@@ -604,6 +605,8 @@
         expected_contents = [attr.evolve(c, data=None) for c in [cont1, cont2]]
 
         assert actual_contents == expected_contents
+        for content in actual_contents:
+            assert content.ctime is None
 
     def test_content_get_missing_sha1(self, swh_storage, sample_data):
         cont1, cont2 = sample_data.contents[:2]
@@ -2981,6 +2984,8 @@
 
         actually_present = swh_storage.content_find({"sha1": content.sha1})
         assert actually_present[0] == content
+        assert actually_present[0].ctime is not None
+        assert actually_present[0].ctime.tzinfo is not None
 
     def test_content_find_with_present_content(self, swh_storage, sample_data):
         content = sample_data.content