diff --git a/Gemfile b/Gemfile
index 052c540f4..1c84de83b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,7 @@ gem 'gds-sso', '~> 11.2'
 gem 'gds-api-adapters', '~> 41.0.0'
 gem 'govspeak', '~> 3.4.0'
 gem 'govuk_admin_template', '4.2.0'
-gem "govuk_content_models", '44.0.0'
+gem "govuk_content_models", '44.0.1'
 gem 'govuk_sidekiq', '0.0.4'
 gem 'has_scope'
 gem 'inherited_resources'
diff --git a/Gemfile.lock b/Gemfile.lock
index 27bfb32b1..59a1c9636 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -137,7 +137,7 @@ GEM
       bootstrap-sass (= 3.3.5.1)
       jquery-rails (~> 3.1.3)
       rails (>= 3.2.0)
-    govuk_content_models (44.0.0)
+    govuk_content_models (44.0.1)
       bson_ext
       gds-api-adapters (>= 10.9.0)
       gds-sso (~> 11.2)
@@ -460,7 +460,7 @@ DEPENDENCIES
   govuk-content-schema-test-helpers (~> 1.4)
   govuk-lint (~> 0.7)
   govuk_admin_template (= 4.2.0)
-  govuk_content_models (= 44.0.0)
+  govuk_content_models (= 44.0.1)
   govuk_sidekiq (= 0.0.4)
   has_scope
   inherited_resources
diff --git a/test/integration/add_artefact_test.rb b/test/integration/add_artefact_test.rb
index 203b623ba..e77a76cee 100644
--- a/test/integration/add_artefact_test.rb
+++ b/test/integration/add_artefact_test.rb
@@ -36,4 +36,17 @@ class AddArtefactTest < ActionDispatch::IntegrationTest
     options = find_field("Format").find_all('option').map(&:value)
     assert_empty options & Artefact::RETIRED_FORMATS
   end
+
+  should "not allow creation of a done page without the /done prefix" do
+    visit root_path
+    click_link "Add artefact"
+
+    fill_in "Title", with: "Done thing"
+    fill_in "Slug", with: "done-thing"
+    select "Completed transaction", from: "Format"
+
+    click_button "Save and go to item"
+
+    assert page.has_content?("Done page slugs must have a done/ prefix")
+  end
 end
diff --git a/test/integration/change_edition_type_test.rb b/test/integration/change_edition_type_test.rb
index f44788fa2..05ebffbca 100644
--- a/test/integration/change_edition_type_test.rb
+++ b/test/integration/change_edition_type_test.rb
@@ -25,6 +25,8 @@ def edition_parts(edition)
   def create_artefact_of_kind(kind)
     if kind == 'help_page'
       FactoryGirl.create(:artefact, slug: "help/foo", kind: kind)
+    elsif kind == 'completed_transaction'
+      FactoryGirl.create(:artefact, slug: "done/foo", kind: kind)
     else
       FactoryGirl.create(:artefact, kind: kind)
     end
diff --git a/test/unit/presenters/formats/completed_transaction_presenter_test.rb b/test/unit/presenters/formats/completed_transaction_presenter_test.rb
index ae218da93..0188325e9 100644
--- a/test/unit/presenters/formats/completed_transaction_presenter_test.rb
+++ b/test/unit/presenters/formats/completed_transaction_presenter_test.rb
@@ -18,7 +18,7 @@ def edition
   end
 
   def artefact
-    @_artefact ||= FactoryGirl.create(:artefact, kind: "completed_transaction")
+    @_artefact ||= FactoryGirl.create(:artefact, kind: "completed_transaction", slug: "done/artefact")
   end
 
   def result
diff --git a/test/unit/services/search_indexer_test.rb b/test/unit/services/search_indexer_test.rb
index 7c73681c4..d101b33ac 100644
--- a/test/unit/services/search_indexer_test.rb
+++ b/test/unit/services/search_indexer_test.rb
@@ -36,9 +36,16 @@ def test_indexing_to_rummager
 
   def test_format_exceptions_are_not_indexed
     SearchIndexer::FORMATS_NOT_TO_INDEX.each do |format|
-      artefact = FactoryGirl.create(
-        :artefact, kind: format, content_id: "content-id",
-      )
+      if format == 'completed_transaction'
+        artefact = FactoryGirl.create(
+          :artefact,
+          kind: format,
+          slug: "done/something",
+          content_id: "content-id")
+      else
+        artefact = FactoryGirl.create(:artefact, kind: format, content_id: "content_id")
+      end
+
       edition = FactoryGirl.create(:answer_edition, panopticon_id: artefact.id)
       search_index_presenter = SearchIndexPresenter.new(edition)