diff --git a/spec/support/json_fixture.rb b/spec/support/otrs_import_json_fixture_helper.rb
similarity index 100%
rename from spec/support/json_fixture.rb
rename to spec/support/otrs_import_json_fixture_helper.rb
diff --git a/spec/support/perform_package_migrations.rb b/spec/support/perform_package_migrations.rb
new file mode 100644
index 000000000..2ebb3a9ed
--- /dev/null
+++ b/spec/support/perform_package_migrations.rb
@@ -0,0 +1,2 @@
+# make sure that all migrations of linked packages are executed
+Package::Migration.linked
diff --git a/spec/support/time_helper.rb b/spec/support/time_helper.rb
new file mode 100644
index 000000000..3da23001f
--- /dev/null
+++ b/spec/support/time_helper.rb
@@ -0,0 +1,9 @@
+RSpec.configure do |config|
+  # make usage of time travel helpers possible
+  config.include ActiveSupport::Testing::TimeHelpers
+
+  # avoid stuck time issues
+  config.after(:each) do
+    travel_back
+  end
+end
diff --git a/spec/support/webmock.rb b/spec/support/webmock.rb
index 8dcd0a2a2..4e3209848 100644
--- a/spec/support/webmock.rb
+++ b/spec/support/webmock.rb
@@ -1,6 +1,8 @@
 # allow requests to:
 # - Zammad webservices
 # - Google (calendar)
+# - exchange.example.com (MS Exchange TCR mocks)
+# - localhost (Selenium server control)
 allowed_sites = lambda do |uri|
   ['zammad.com', 'google.com', 'exchange.example.com'].any? do |site|
     uri.host.include?(site)