diff --git a/youtube.txt b/youtube.txt
index ecb0bdd..95a99c4 100644
--- a/youtube.txt
+++ b/youtube.txt
@@ -1,3 +1,4 @@
 *.googlevideo.com
 upload.youtube.com
+# Used for YouTube video uploads:
 yt-video-upload.l.google.com
\ No newline at end of file