diff --git a/.abf.yml b/.abf.yml
index 27f3907..1036ba6 100644
--- a/.abf.yml
+++ b/.abf.yml
@@ -1,3 +1,6 @@
-sources:
+removed_sources:
   youtube-dl-2016.10.26.tar.gz: 1e1c0c3621ea9c453ff4bed65adc192d7fbcc2f5
+sources:
   youtube-dl-2016.10.26.tar.gz.sig: 4dbd079ec43f566e24cc71f52bb21d684787422a
+  youtube-dl-2017.02.28.tar.gz: 22c1b0918a60fba7de4f274f6cc135d2d810c1b5
+  youtube-dl-2017.02.28.tar.gz.sig: 59ff6bd1ec01b985e7cd4e3b367d8d510774693c