diff --git a/lib/mrsk/commands/prune.rb b/lib/mrsk/commands/prune.rb
index dd9b14b8..9ce5645e 100644
--- a/lib/mrsk/commands/prune.rb
+++ b/lib/mrsk/commands/prune.rb
@@ -2,8 +2,8 @@ require "active_support/duration"
 require "active_support/core_ext/numeric/time"
 
 class Mrsk::Commands::Prune < Mrsk::Commands::Base
-  PRUNE_IMAGES_AFTER     = 30.days.in_hours.to_i
-  PRUNE_CONTAINERS_AFTER =  3.days.in_hours.to_i
+  PRUNE_IMAGES_AFTER     = 7.days.in_hours.to_i
+  PRUNE_CONTAINERS_AFTER = 3.days.in_hours.to_i
 
   def images
     docker :image, :prune, "-f", "--filter", "until=#{PRUNE_IMAGES_AFTER}h"