diff --git a/discord/utils.py b/discord/utils.py
index 52ff49a49..49e824de2 100644
--- a/discord/utils.py
+++ b/discord/utils.py
@@ -96,6 +96,7 @@ __all__ = (
     'as_chunks',
     'format_dt',
     'set_target',
+    'MISSING',
 )
 
 DISCORD_EPOCH = 1420070400000
@@ -104,6 +105,8 @@ _log = logging.getLogger(__name__)
 
 
 class _MissingSentinel:
+    __slots__ = ()
+
     def __eq__(self, other):
         return False
 
diff --git a/docs/api.rst b/docs/api.rst
index 69ba7c4f3..e76ea1f99 100644
--- a/docs/api.rst
+++ b/docs/api.rst
@@ -1413,6 +1413,12 @@ Utility Functions
 
 .. autofunction:: discord.utils.set_target
 
+.. data:: MISSING
+
+    A type safe sentinel used in the library to represent something as missing. Used to distinguish from ``None`` values.
+
+    .. versionadded:: 2.0
+
 .. _discord-api-enums:
 
 Enumerations