diff --git a/disnake/member.py b/disnake/member.py
index 149fc97ecc..7d7bff178e 100644
--- a/disnake/member.py
+++ b/disnake/member.py
@@ -385,11 +385,15 @@ def _update_from_message(self, data: MemberPayload) -> None:
 
     @classmethod
     def _try_upgrade(
-        cls, *, data: UserWithMemberPayload, guild: Guild, state: ConnectionState
+        cls,
+        *,
+        data: Union[UserPayload, UserWithMemberPayload],
+        guild: Guild,
+        state: ConnectionState,
     ) -> Union[User, Self]:
         # A User object with a 'member' key
         try:
-            member_data = data.pop("member")
+            member_data = data.pop("member")  # type: ignore
         except KeyError:
             return state.create_user(data)
         else:
diff --git a/disnake/message.py b/disnake/message.py
index 7e17ceee9b..6e90a00ee8 100644
--- a/disnake/message.py
+++ b/disnake/message.py
@@ -1286,7 +1286,9 @@ def _handle_member(self, member: MemberPayload) -> None:
             # TODO: consider adding to cache here
             self.author = Member._from_message(message=self, data=member)
 
-    def _handle_mentions(self, mentions: List[UserWithMemberPayload]) -> None:
+    def _handle_mentions(
+        self, mentions: Union[List[UserPayload], List[UserWithMemberPayload]]
+    ) -> None:
         self.mentions = r = []
         guild = self.guild
         state = self._state