diff --git a/db/migrate/20140127164931_change_handler_to_medium_text.rb b/db/migrate/20140127164931_change_handler_to_medium_text.rb
new file mode 100644
index 00000000..ad00e9be
--- /dev/null
+++ b/db/migrate/20140127164931_change_handler_to_medium_text.rb
@@ -0,0 +1,19 @@
+# Increase handler size to 16MB (consistent with events.payload)
+
+class ChangeHandlerToMediumText < ActiveRecord::Migration
+  def up
+    if mysql?
+      change_column :delayed_jobs, :handler, :text, :limit => 16777215
+    end
+  end
+
+  def down
+    if mysql?
+      change_column :delayed_jobs, :handler, :text, :limit => 65535
+    end
+  end
+
+  def mysql?
+    ActiveRecord::Base.connection.adapter_name =~ /mysql/i
+  end
+end
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