diff --git a/archival.rb b/archival.rb
index fb18815..6483b98 100755
--- a/archival.rb
+++ b/archival.rb
@@ -141,6 +141,7 @@ class Log
 end
 
 def main
+    File.write('./last_attempted_run.txt', $datestr)
 	log = Log.new
 
 	log.add "Creating archive for yesterday, #{$datestr}"