diff --git a/src/dpy_cache/dpy_cache.py b/src/dpy_cache/dpy_cache.py
index ab036fd..4ec767d 100644
--- a/src/dpy_cache/dpy_cache.py
+++ b/src/dpy_cache/dpy_cache.py
@@ -61,7 +61,7 @@ log = logging.getLogger(__name__)
 
 MAX_ATTACHMENTS_PER_MESSAGE = 10
 
-FileContent = Union[bytes, str, "os.PathLike[str]", discord.File]
+FileContent = Union[bytes, bytearray, str, "os.PathLike[str]", discord.File]
 
 
 class DPYCacheError(Exception):