diff --git a/Pipfile b/Pipfile
index c0aebbe..7c15120 100644
--- a/Pipfile
+++ b/Pipfile
@@ -6,6 +6,7 @@ name = "pypi"
 [packages]
 orjson = "*"
 "discord.py" = {extras = ["voice"], version = "*"}
+websockets = "*"
 
 [dev-packages]
 mypy = "*"
diff --git a/pomice/enums.py b/pomice/enums.py
index 1e963de..513b0dc 100644
--- a/pomice/enums.py
+++ b/pomice/enums.py
@@ -54,6 +54,8 @@ class TrackType(Enum):
     TrackType.HTTP defines that the track is from an HTTP source.
 
     TrackType.LOCAL defines that the track is from a local source.
+
+    TrackType.OTHER defines that the track is from an unknown source (possible from 3rd-party plugins).
     """
 
     # We don't have to define anything special for these, since these just serve as flags
@@ -63,6 +65,11 @@ class TrackType(Enum):
     APPLE_MUSIC = "apple_music"
     HTTP = "http"
     LOCAL = "local"
+    OTHER = "other"
+
+    @classmethod
+    def _missing_(cls, _: object) -> "TrackType":
+        return cls.OTHER
 
     def __str__(self) -> str:
         return self.value
@@ -79,6 +86,8 @@ class PlaylistType(Enum):
     PlaylistType.SPOTIFY defines that the playlist is from Spotify
 
     PlaylistType.APPLE_MUSIC defines that the playlist is from Apple Music.
+
+    PlaylistType.OTHER defines that the playlist is from an unknown source (possible from 3rd-party plugins).
     """
 
     # We don't have to define anything special for these, since these just serve as flags
@@ -86,6 +95,11 @@ class PlaylistType(Enum):
     SOUNDCLOUD = "soundcloud"
     SPOTIFY = "spotify"
     APPLE_MUSIC = "apple_music"
+    OTHER = "other"
+
+    @classmethod
+    def _missing_(cls, _: object) -> "PlaylistType":
+        return cls.OTHER
 
     def __str__(self) -> str:
         return self.value