diff --git a/app/models/account.rb b/app/models/account.rb
index 5ca3b3629..6c951f326 100644
--- a/app/models/account.rb
+++ b/app/models/account.rb
@@ -11,6 +11,11 @@ class Account < ApplicationRecord
     end
   end
 
+  # This lets us use the account as a generic card container. See +Entropy::Configuration+.
+  def cards
+    Card.all
+  end
+
   def slug
     "/#{tenant}"
   end
diff --git a/app/models/entropy/configuration.rb b/app/models/entropy/configuration.rb
index 4ed13d597..b8960d3ab 100644
--- a/app/models/entropy/configuration.rb
+++ b/app/models/entropy/configuration.rb
@@ -1,9 +1,16 @@
 class Entropy::Configuration < ApplicationRecord
   belongs_to :container, polymorphic: true
 
+  after_commit :touch_all_container_cards_later
+
   class << self
     def default
       Account.sole.default_entropy_configuration
     end
   end
+
+  private
+    def touch_all_container_cards_later
+      Card::TouchAllJob.perform_later(container)
+    end
 end
diff --git a/test/models/entropy/configuration_test.rb b/test/models/entropy/configuration_test.rb
new file mode 100644
index 000000000..015e8b1de
--- /dev/null
+++ b/test/models/entropy/configuration_test.rb
@@ -0,0 +1,20 @@
+require "test_helper"
+
+class Entropy::ConfigurationTest < ActiveSupport::TestCase
+  test "touch cards when configuration changes for collection container" do
+    collection = collections(:writebook)
+    config = collection.entropy_configuration || collection.create_entropy_configuration!(auto_postpone_period: 30.days)
+
+    assert_enqueued_with(job: Card::TouchAllJob, args: [ collection ]) do
+      config.update!(auto_postpone_period: 15.days)
+    end
+  end
+
+  test "touch cards when configuration changes for account container" do
+    account = Account.sole
+
+    assert_enqueued_with(job: Card::TouchAllJob, args: [ account ]) do
+      account.default_entropy_configuration.update!(auto_postpone_period: 45.days)
+    end
+  end
+end