diff --git a/hikari/impl/entity_factory.py b/hikari/impl/entity_factory.py
index b96c6b8aa6..00dd75dca7 100644
--- a/hikari/impl/entity_factory.py
+++ b/hikari/impl/entity_factory.py
@@ -995,7 +995,7 @@ def deserialize_member(
 
         joined_at = date.iso8601_datetime_string_to_datetime(payload["joined_at"])
 
-        raw_premium_since = payload["premium_since"]
+        raw_premium_since = payload.get("premium_since")
         premium_since = (
             date.iso8601_datetime_string_to_datetime(raw_premium_since) if raw_premium_since is not None else None
         )