diff --git a/telegram/_gifts.py b/telegram/_gifts.py
index a716d69a8..b406a3a5d 100644
--- a/telegram/_gifts.py
+++ b/telegram/_gifts.py
@@ -126,5 +126,5 @@ class Gifts(TelegramObject):
         """See :meth:`telegram.TelegramObject.de_json`."""
         data = cls._parse_data(data)
 
-        data["gifts"] = Gifts.de_list(data["gifts"], bot)
+        data["gifts"] = Gift.de_list(data["gifts"], bot)
         return cls(**data)
diff --git a/tests/auxil/dummy_objects.py b/tests/auxil/dummy_objects.py
index 23525ad7c..7e504f0db 100644
--- a/tests/auxil/dummy_objects.py
+++ b/tests/auxil/dummy_objects.py
@@ -8,13 +8,17 @@ from telegram import (
     BotName,
     BotShortDescription,
     BusinessConnection,
+    Chat,
     ChatAdministratorRights,
+    ChatBoost,
+    ChatBoostSource,
     ChatFullInfo,
     ChatInviteLink,
     ChatMember,
     File,
     ForumTopic,
     GameHighScore,
+    Gift,
     Gifts,
     MenuButton,
     MessageId,
@@ -22,6 +26,7 @@ from telegram import (
     PollOption,
     PreparedInlineMessage,
     SentWebAppMessage,
+    StarTransaction,
     StarTransactions,
     Sticker,
     StickerSet,
@@ -38,6 +43,15 @@ _DUMMY_USER = User(
     id=123456, is_bot=False, first_name="Dummy", last_name="User", username="dummy_user"
 )
 _DUMMY_DATE = dtm.datetime(1970, 1, 1, 0, 0, 0, 0, tzinfo=dtm.timezone.utc)
+_DUMMY_STICKER = Sticker(
+    file_id="dummy_file_id",
+    file_unique_id="dummy_file_unique_id",
+    width=1,
+    height=1,
+    is_animated=False,
+    is_video=False,
+    type="dummy_type",
+)
 
 _PREPARED_DUMMY_OBJECTS: dict[str, object] = {
     "bool": True,
@@ -53,6 +67,7 @@ _PREPARED_DUMMY_OBJECTS: dict[str, object] = {
         can_reply=True,
         is_enabled=True,
     ),
+    "Chat": Chat(id=123456, type="dummy_type"),
     "ChatAdministratorRights": ChatAdministratorRights.all_rights(),
     "ChatFullInfo": ChatFullInfo(
         id=123456,
@@ -70,7 +85,7 @@ _PREPARED_DUMMY_OBJECTS: dict[str, object] = {
     "ChatMember": ChatMember(user=_DUMMY_USER, status="dummy_status"),
     "File": File(file_id="dummy_file_id", file_unique_id="dummy_file_unique_id"),
     "ForumTopic": ForumTopic(message_thread_id=2, name="dummy_name", icon_color=1),
-    "Gifts": Gifts(gifts=[]),
+    "Gifts": Gifts(gifts=[Gift(id="dummy_id", sticker=_DUMMY_STICKER, star_count=1)]),
     "GameHighScore": GameHighScore(position=1, user=_DUMMY_USER, score=1),
     "int": 123456,
     "MenuButton": MenuButton(type="dummy_type"),
@@ -88,23 +103,29 @@ _PREPARED_DUMMY_OBJECTS: dict[str, object] = {
     ),
     "PreparedInlineMessage": PreparedInlineMessage(id="dummy_id", expiration_date=_DUMMY_DATE),
     "SentWebAppMessage": SentWebAppMessage(inline_message_id="dummy_inline_message_id"),
-    "StarTransactions": StarTransactions(transactions=[]),
-    "Sticker": Sticker(
-        file_id="dummy_file_id",
-        file_unique_id="dummy_file_unique_id",
-        width=1,
-        height=1,
-        is_animated=False,
-        is_video=False,
-        type="dummy_type",
+    "StarTransactions": StarTransactions(
+        transactions=[StarTransaction(id="dummy_id", amount=1, date=_DUMMY_DATE)]
     ),
+    "Sticker": _DUMMY_STICKER,
     "StickerSet": StickerSet(
-        name="dummy_name", title="dummy_title", stickers=[], sticker_type="dummy_type"
+        name="dummy_name",
+        title="dummy_title",
+        stickers=[_DUMMY_STICKER],
+        sticker_type="dummy_type",
     ),
     "str": "dummy_string",
     "Update": Update(update_id=123456),
     "User": _DUMMY_USER,
-    "UserChatBoosts": UserChatBoosts(boosts=[]),
+    "UserChatBoosts": UserChatBoosts(
+        boosts=[
+            ChatBoost(
+                boost_id="dummy_id",
+                add_date=_DUMMY_DATE,
+                expiration_date=_DUMMY_DATE,
+                source=ChatBoostSource(source="dummy_source"),
+            )
+        ]
+    ),
     "UserProfilePhotos": UserProfilePhotos(total_count=1, photos=[[]]),
     "WebhookInfo": WebhookInfo(
         url="dummy_url",
diff --git a/tests/test_bot.py b/tests/test_bot.py
index 4124dd15a..92397e17e 100644
--- a/tests/test_bot.py
+++ b/tests/test_bot.py
@@ -105,6 +105,7 @@ from tests.auxil.pytest_classes import PytestBot, PytestExtBot, make_bot
 from tests.auxil.slots import mro_slots
 
 from .auxil.build_messages import make_message
+from .auxil.dummy_objects import get_dummy_object
 
 
 @pytest.fixture
@@ -1625,7 +1626,7 @@ class TestBotWithoutRequest:
         message = Message(
             1,
             dtm.datetime.utcnow(),
-            None,
+            get_dummy_object(Chat),
             reply_markup=offline_bot.callback_data_cache.process_keyboard(reply_markup),
         )
         message._unfreeze()
@@ -1639,7 +1640,7 @@ class TestBotWithoutRequest:
                     message_type: Message(
                         1,
                         dtm.datetime.utcnow(),
-                        None,
+                        get_dummy_object(Chat),
                         pinned_message=message,
                         reply_to_message=Message.de_json(message.to_dict(), offline_bot),
                     )
@@ -1782,7 +1783,7 @@ class TestBotWithoutRequest:
         message = Message(
             1,
             dtm.datetime.utcnow(),
-            None,
+            get_dummy_object(Chat),
             reply_markup=reply_markup,
             via_bot=bot.bot if self_sender else User(1, "first", False),
         )
diff --git a/tests/test_chatboost.py b/tests/test_chatboost.py
index d83769702..4f75a204d 100644
--- a/tests/test_chatboost.py
+++ b/tests/test_chatboost.py
@@ -38,6 +38,7 @@ from telegram import (
 from telegram._utils.datetime import UTC, to_timestamp
 from telegram.constants import ChatBoostSources
 from telegram.request import RequestData
+from tests.auxil.dummy_objects import get_dummy_object_json_dict
 from tests.auxil.slots import mro_slots
 
 
@@ -532,7 +533,7 @@ class TestUserChatBoostsWithoutRequest(ChatBoostDefaults):
             user_id = data["user_id"] == "2"
             if not all((chat_id, user_id)):
                 pytest.fail("I got wrong parameters in post")
-            return data
+            return get_dummy_object_json_dict(UserChatBoosts)
 
         monkeypatch.setattr(offline_bot.request, "post", make_assertion)
 
diff --git a/tests/test_message.py b/tests/test_message.py
index 8fc9a32f8..f997a6f48 100644
--- a/tests/test_message.py
+++ b/tests/test_message.py
@@ -89,6 +89,7 @@ from tests.auxil.bot_method_checks import (
     check_shortcut_signature,
 )
 from tests.auxil.build_messages import make_message
+from tests.auxil.dummy_objects import get_dummy_object_json_dict
 from tests.auxil.pytest_classes import PytestExtBot, PytestMessage
 from tests.auxil.slots import mro_slots
 
@@ -591,9 +592,9 @@ class TestMessageWithoutRequest(MessageTestBase):
     def test_de_json_localization(self, offline_bot, raw_bot, tz_bot):
         json_dict = {
             "message_id": 12,
-            "from_user": None,
+            "from_user": get_dummy_object_json_dict("User"),
             "date": int(dtm.datetime.now().timestamp()),
-            "chat": None,
+            "chat": get_dummy_object_json_dict("Chat"),
             "edit_date": int(dtm.datetime.now().timestamp()),
         }
 
diff --git a/tests/test_update.py b/tests/test_update.py
index baeff8b74..7d0d5d388 100644
--- a/tests/test_update.py
+++ b/tests/test_update.py
@@ -47,6 +47,7 @@ from telegram import (
     PreCheckoutQuery,
     ReactionCount,
     ReactionTypeEmoji,
+    ShippingAddress,
     ShippingQuery,
     Update,
     User,
@@ -158,7 +159,11 @@ params = [
     {"edited_channel_post": channel_post},
     {"inline_query": InlineQuery(1, User(1, "", False), "", "")},
     {"chosen_inline_result": ChosenInlineResult("id", User(1, "", False), "")},
-    {"shipping_query": ShippingQuery("id", User(1, "", False), "", None)},
+    {
+        "shipping_query": ShippingQuery(
+            "id", User(1, "", False), "", ShippingAddress("", "", "", "", "", "")
+        )
+    },
     {"pre_checkout_query": PreCheckoutQuery("id", User(1, "", False), "", 0, "")},
     {"poll": Poll("id", "?", [PollOption(".", 1)], False, False, False, Poll.REGULAR, True)},
     {