diff --git a/lib/tasks/2017_10_18_regenerate_attestation.rake b/lib/tasks/2017_10_18_regenerate_attestation.rake
new file mode 100644
index 000000000..4efe08bd0
--- /dev/null
+++ b/lib/tasks/2017_10_18_regenerate_attestation.rake
@@ -0,0 +1,29 @@
+namespace :'2017_10_18_regenerate_attestation' do
+  task set: :environment do
+    include ActiveSupport::Testing::TimeHelpers
+
+    if ENV['ATTESTATION_ID'].present?
+      regenerate_attestations(Attestation.find(ENV['ATTESTATION_ID']))
+    else
+      Attestation.all.each { |attestation| regenerate_attestations(attestation) }
+    end
+  end
+
+  def regenerate_attestations(attestation)
+    Procedure.unscoped do
+      Dossier.unscoped do
+        dossier = attestation.dossier
+        procedure = dossier.procedure
+
+        puts "processing dossier #{dossier.id}"
+
+        travel_to(dossier.processed_at) do
+          new_attestation = procedure.attestation_template.attestation_for(dossier)
+          attestation.delete
+          dossier.attestation = new_attestation
+          dossier.save
+        end
+      end
+    end
+  end
+end