diff --git a/tests/test_database.py b/tests/test_database.py
index c8f16a4..814a44b 100644
--- a/tests/test_database.py
+++ b/tests/test_database.py
@@ -99,6 +99,7 @@ FEED = feed.Feed(
             inserted_at=(REF_TIME * 1000) + index,
             title=f"Entry {index}",
             link=f"http://example.com/test/a{index}",
+            posted_at=(REF_TIME * 1000) + index,
         )
         for index in range(100, 0, -1)
     ],
@@ -121,6 +122,7 @@ OTHER_FEED = feed.Feed(
             inserted_at=(REF_TIME * 1000) + index,
             title=f"Entry {index}",
             link=f"http://example.com/other/a{index}",
+            posted_at=(REF_TIME * 1000) + index,
         )
         for index in range(100, 0, -1)
     ],