diff --git a/Rakefile b/Rakefile
index 2caeafc4f9ee207f05a2ebfa55a7d9c7512a155e..0340c7482470c1882df8936f6df0f64c877ffaaa 100644
--- a/Rakefile
+++ b/Rakefile
@@ -623,7 +623,7 @@ namespace :basebox do
     boxes.sort! { |a, b| basebox_date(a) <=> basebox_date(b) }
     boxes.pop
     boxes.each do |box|
-      if basebox_date(box) < Date.today - 365.0/2.0
+      if basebox_date(box) < Date.today - 365.0/3.0
         clean_up_basebox(box)
       end
     end