diff --git a/syng/sources/__init__.py b/syng/sources/__init__.py
index 80ac4ed..b57aefc 100644
--- a/syng/sources/__init__.py
+++ b/syng/sources/__init__.py
@@ -8,6 +8,9 @@ from typing import Any
 
 from .source import available_sources as available_sources
 from .source import Source as Source
+from .youtube import YoutubeSource  # noqa: F401
+from .s3 import S3Source  # noqa: F401
+from .files import FilesSource  # noqa: F401
 
 
 def configure_sources(configs: dict[str, Any]) -> dict[str, Source]: