diff --git a/aider/io.py b/aider/io.py
index a8f404276..46e127bda 100644
--- a/aider/io.py
+++ b/aider/io.py
@@ -22,6 +22,7 @@ from rich.style import Style as RichStyle
 from rich.text import Text
 
 from aider.mdstream import MarkdownStream
+from aider.watch import watch_source_files
 
 from .dump import dump  # noqa: F401
 from .utils import is_image_file