diff --git a/README.md b/README.md
index 8c3efbc..96abd74 100644
--- a/README.md
+++ b/README.md
@@ -98,7 +98,15 @@ for you. Checkout [Airbrake](http://airbrakeapp.com) from the guys over at
 
          heroku run rake db:seed
 
-  4. Enjoy!
+  4. If you are using a free database on Heroku, you may want to periodically clear resolved errors to free up space.
+
+         # Install the heroku cron addon, to clear resolved errors daily:
+         heroku addons:add cron:daily
+
+         # Or, clear resolved errors manually:
+         heroku rake errbit:db:clear_resolved
+
+  5. Enjoy!
 
 
 **Configuring LDAP authentication:**
diff --git a/lib/tasks/heroku/cron.rake b/lib/tasks/heroku/cron.rake
new file mode 100644
index 0000000..fab6254
--- /dev/null
+++ b/lib/tasks/heroku/cron.rake
@@ -0,0 +1,5 @@
+desc "This task is called by the Heroku cron add-on"
+task :cron => :environment do
+  Rake::Task["errbit:db:clear_resolved"].invoke
+end
+
--
libgit2 0.21.2