diff --git a/.credo.exs b/.credo.exs
index 73296ec7..0a8c81f7 100644
--- a/.credo.exs
+++ b/.credo.exs
@@ -130,6 +130,7 @@
           {Credo.Check.Refactor.NegatedConditionsInUnless, []},
           {Credo.Check.Refactor.NegatedConditionsWithElse, []},
           {Credo.Check.Refactor.Nesting, []},
+          {Credo.Check.Refactor.PassAsyncInTestCases, []},
           {Credo.Check.Refactor.RedundantWithClauseResult, []},
           {Credo.Check.Refactor.RejectReject, []},
           {Credo.Check.Refactor.UnlessWithElse, []},
@@ -198,7 +199,6 @@
           {Credo.Check.Refactor.MapMap, []},
           {Credo.Check.Refactor.ModuleDependencies, []},
           {Credo.Check.Refactor.NegatedIsNil, []},
-          {Credo.Check.Refactor.PassAsyncInTestCases, []},
           {Credo.Check.Refactor.PipeChainStart, []},
           {Credo.Check.Refactor.RejectFilter, []},
           {Credo.Check.Refactor.VariableRebinding, []},
diff --git a/test/mindwendel/accounts_test.exs b/test/mindwendel/accounts_test.exs
index 91f82a4d..79d8688d 100644
--- a/test/mindwendel/accounts_test.exs
+++ b/test/mindwendel/accounts_test.exs
@@ -1,5 +1,5 @@
 defmodule Mindwendel.AccountsTest do
-  use Mindwendel.DataCase
+  use Mindwendel.DataCase, async: true
   alias Mindwendel.Factory
   alias Mindwendel.Accounts
   alias Mindwendel.Accounts.User
@@ -125,13 +125,16 @@ defmodule Mindwendel.AccountsTest do
       )
 
       # we want to make sure that the database is not handling this with a foreign key restraint, but rather that it's handled in the app:
-      {_result, log} =
-        with_log(fn ->
+      log =
+        capture_log(fn ->
           Accounts.delete_inactive_users()
         end)
 
       assert Repo.exists?(from u in User, where: u.id == ^old_user.id)
-      assert log == ""
+      # we don't expect actual logs but due to async running other tests may emit logs at
+      # the same time and so we want to make sure here that no delete logs around the user
+      # are emitted
+      refute log =~ ~r/delet.*#{old_user.id}/i
     end
   end
 end
diff --git a/test/mindwendel/attachments_test.exs b/test/mindwendel/attachments_test.exs
index 37b172e4..19351d33 100644
--- a/test/mindwendel/attachments_test.exs
+++ b/test/mindwendel/attachments_test.exs
@@ -1,5 +1,6 @@
 defmodule Mindwendel.AttachmentsTest do
-  use Mindwendel.DataCase
+  use Mindwendel.DataCase, async: true
+
   alias Mindwendel.Factory
   alias Mindwendel.Attachments
 
diff --git a/test/mindwendel/brainstormings/create_brainstorming_test.exs b/test/mindwendel/brainstormings/create_brainstorming_test.exs
index f1afe6eb..ef01512f 100644
--- a/test/mindwendel/brainstormings/create_brainstorming_test.exs
+++ b/test/mindwendel/brainstormings/create_brainstorming_test.exs
@@ -1,5 +1,5 @@
 defmodule Mindwendel.Brainstormings.CreateBrainstormingTest do
-  use Mindwendel.DataCase
+  use Mindwendel.DataCase, async: true
   alias Mindwendel.Brainstormings.BrainstormingModeratingUser
   alias Mindwendel.Accounts.BrainstormingUser
   alias Mindwendel.Factory
diff --git a/test/mindwendel/brainstormings_test.exs b/test/mindwendel/brainstormings_test.exs
index 1340ed31..0f85d1fe 100644
--- a/test/mindwendel/brainstormings_test.exs
+++ b/test/mindwendel/brainstormings_test.exs
@@ -1,6 +1,6 @@
 defmodule Mindwendel.BrainstormingsTest do
   alias Mindwendel.Brainstormings.IdeaIdeaLabel
-  use Mindwendel.DataCase
+  use Mindwendel.DataCase, async: true
   alias Mindwendel.Brainstormings.BrainstormingModeratingUser
   alias Mindwendel.Factory
 
diff --git a/test/mindwendel/brainstormings_users_test.exs b/test/mindwendel/brainstormings_users_test.exs
index b5352e4f..047c0795 100644
--- a/test/mindwendel/brainstormings_users_test.exs
+++ b/test/mindwendel/brainstormings_users_test.exs
@@ -1,5 +1,5 @@
 defmodule Mindwendel.AccountsMergeBrainstormingUserTest do
-  use Mindwendel.DataCase
+  use Mindwendel.DataCase, async: true
   alias Mindwendel.Factory
   alias Mindwendel.Accounts
   alias Mindwendel.Accounts.User
diff --git a/test/mindwendel/csv_formatter_test.exs b/test/mindwendel/csv_formatter_test.exs
index 97f54f47..1a917528 100644
--- a/test/mindwendel/csv_formatter_test.exs
+++ b/test/mindwendel/csv_formatter_test.exs
@@ -1,5 +1,5 @@
 defmodule MindwendelServices.CSVFormatter do
-  use Mindwendel.DataCase
+  use Mindwendel.DataCase, async: true
   alias Mindwendel.Factory
   alias Mindwendel.CSVFormatter
 
diff --git a/test/mindwendel/help_test.exs b/test/mindwendel/help_test.exs
index 53975617..349c500c 100644
--- a/test/mindwendel/help_test.exs
+++ b/test/mindwendel/help_test.exs
@@ -1,5 +1,5 @@
 defmodule Mindwendel.HelpTest do
-  use Mindwendel.DataCase
+  use Mindwendel.DataCase, async: true
   alias Mindwendel.Factory
   alias Mindwendel.Help
 
diff --git a/test/mindwendel/idea_idea_label_test.exs b/test/mindwendel/idea_idea_label_test.exs
index 79bbb9ee..e6f1e72e 100644
--- a/test/mindwendel/idea_idea_label_test.exs
+++ b/test/mindwendel/idea_idea_label_test.exs
@@ -1,5 +1,5 @@
 defmodule Mindwendel.IdeaIdeaLabelTest do
-  use Mindwendel.DataCase
+  use Mindwendel.DataCase, async: true
   alias Mindwendel.Factory
 
   alias Mindwendel.Brainstormings.IdeaIdeaLabel
diff --git a/test/mindwendel/idea_labels_test.exs b/test/mindwendel/idea_labels_test.exs
index 53bc5f80..83991037 100644
--- a/test/mindwendel/idea_labels_test.exs
+++ b/test/mindwendel/idea_labels_test.exs
@@ -1,5 +1,5 @@
 defmodule Mindwendel.IdeaLabelsTest do
-  use Mindwendel.DataCase
+  use Mindwendel.DataCase, async: true
   alias Mindwendel.Factory
 
   alias Mindwendel.Ideas
diff --git a/test/mindwendel/idea_test.exs b/test/mindwendel/idea_test.exs
index ac5eae7d..f7c4cd35 100644
--- a/test/mindwendel/idea_test.exs
+++ b/test/mindwendel/idea_test.exs
@@ -1,5 +1,5 @@
 defmodule Mindwendel.IdeaTest do
-  use Mindwendel.DataCase
+  use Mindwendel.DataCase, async: true
   alias Mindwendel.Factory
 
   alias Mindwendel.Ideas
diff --git a/test/mindwendel/ideas_test.exs b/test/mindwendel/ideas_test.exs
index 786cbd3c..f3f466bf 100644
--- a/test/mindwendel/ideas_test.exs
+++ b/test/mindwendel/ideas_test.exs
@@ -1,5 +1,5 @@
 defmodule Mindwendel.IdeasTest do
-  use Mindwendel.DataCase
+  use Mindwendel.DataCase, async: true
   alias Mindwendel.Factory
 
   alias Mindwendel.Ideas
diff --git a/test/mindwendel/lanes_test.exs b/test/mindwendel/lanes_test.exs
index b81b0063..e10dbc68 100644
--- a/test/mindwendel/lanes_test.exs
+++ b/test/mindwendel/lanes_test.exs
@@ -1,5 +1,5 @@
 defmodule Mindwendel.LanesTest do
-  use Mindwendel.DataCase
+  use Mindwendel.DataCase, async: true
   alias Mindwendel.Lanes
   alias Mindwendel.Brainstormings.Lane
   import Mindwendel.BrainstormingsFixtures
diff --git a/test/mindwendel/likes_test.exs b/test/mindwendel/likes_test.exs
index b6e356ce..883ececb 100644
--- a/test/mindwendel/likes_test.exs
+++ b/test/mindwendel/likes_test.exs
@@ -1,5 +1,5 @@
 defmodule Mindwendel.LikesTest do
-  use Mindwendel.DataCase
+  use Mindwendel.DataCase, async: true
   alias Mindwendel.Factory
   alias Mindwendel.Likes
 
diff --git a/test/mindwendel/services/storage_service_test.exs b/test/mindwendel/services/storage_service_test.exs
index e4526b6d..d68c6c14 100644
--- a/test/mindwendel/services/storage_service_test.exs
+++ b/test/mindwendel/services/storage_service_test.exs
@@ -1,5 +1,6 @@
 defmodule Mindwendel.Brainstormings.StorageServiceTest do
-  use Mindwendel.DataCase
+  use Mindwendel.DataCase, async: true
+
   alias Mindwendel.Services.StorageService
 
   describe "#store_file" do
diff --git a/test/mindwendel/url_preview_test.exs b/test/mindwendel/url_preview_test.exs
index ed67d47d..3b86ac7b 100644
--- a/test/mindwendel/url_preview_test.exs
+++ b/test/mindwendel/url_preview_test.exs
@@ -1,5 +1,5 @@
 defmodule MindwendelServices.UrlPreviewTest do
-  use ExUnit.Case
+  use ExUnit.Case, async: true
   alias Mindwendel.UrlPreview
 
   setup do
diff --git a/test/mindwendel_web/channels/brainstorming_channel_test.exs b/test/mindwendel_web/channels/brainstorming_channel_test.exs
index 97405458..45d408be 100644
--- a/test/mindwendel_web/channels/brainstorming_channel_test.exs
+++ b/test/mindwendel_web/channels/brainstorming_channel_test.exs
@@ -1,5 +1,5 @@
 defmodule MindwendelWeb.BrainstormingChannelTest do
-  use MindwendelWeb.ChannelCase
+  use MindwendelWeb.ChannelCase, async: true
 
   alias Mindwendel.Factory
   alias Mindwendel.Brainstormings
diff --git a/test/mindwendel_web/controllers/brainstorming_controller_test.exs b/test/mindwendel_web/controllers/brainstorming_controller_test.exs
index 296c0357..6f41bb4b 100644
--- a/test/mindwendel_web/controllers/brainstorming_controller_test.exs
+++ b/test/mindwendel_web/controllers/brainstorming_controller_test.exs
@@ -1,5 +1,5 @@
 defmodule MindwendelWeb.BrainstormingControllerTest do
-  use MindwendelWeb.ConnCase
+  use MindwendelWeb.ConnCase, async: true
 
   import Ecto.Query
 
diff --git a/test/mindwendel_web/controllers/file_controller_test.exs b/test/mindwendel_web/controllers/file_controller_test.exs
index 19502ace..cc3ee1b1 100644
--- a/test/mindwendel_web/controllers/file_controller_test.exs
+++ b/test/mindwendel_web/controllers/file_controller_test.exs
@@ -1,5 +1,6 @@
 defmodule MindwendelWeb.FileControllerTest do
-  use MindwendelWeb.ConnCase
+  use MindwendelWeb.ConnCase, async: true
+
   alias Mindwendel.Services.Vault
   alias Mindwendel.Factory
 
diff --git a/test/mindwendel_web/controllers/static_page_controller_test.exs b/test/mindwendel_web/controllers/static_page_controller_test.exs
index 1c4d2e89..11411609 100644
--- a/test/mindwendel_web/controllers/static_page_controller_test.exs
+++ b/test/mindwendel_web/controllers/static_page_controller_test.exs
@@ -1,5 +1,5 @@
 defmodule MindwendelWeb.StaticPageControllerTest do
-  use MindwendelWeb.ConnCase
+  use MindwendelWeb.ConnCase, async: true
   alias Mindwendel.Factory
   alias Mindwendel.Repo
 
diff --git a/test/mindwendel_web/live/admin/brainstorming_live/edit_test.exs b/test/mindwendel_web/live/admin/brainstorming_live/edit_test.exs
index 2b2d037c..ce89c6e2 100644
--- a/test/mindwendel_web/live/admin/brainstorming_live/edit_test.exs
+++ b/test/mindwendel_web/live/admin/brainstorming_live/edit_test.exs
@@ -1,5 +1,5 @@
 defmodule MindwendelWeb.Admin.BrainstormingLive.EditTest do
-  use MindwendelWeb.ConnCase
+  use MindwendelWeb.ConnCase, async: true
   import Phoenix.LiveViewTest
 
   alias Mindwendel.Factory
diff --git a/test/mindwendel_web/live/brainstorming_live/show_idea_delete_test.exs b/test/mindwendel_web/live/brainstorming_live/show_idea_delete_test.exs
index 18023cde..17b2f763 100644
--- a/test/mindwendel_web/live/brainstorming_live/show_idea_delete_test.exs
+++ b/test/mindwendel_web/live/brainstorming_live/show_idea_delete_test.exs
@@ -1,5 +1,5 @@
 defmodule MindwendelWeb.BrainstormingLive.ShowIdeaDeleteTest do
-  use MindwendelWeb.ConnCase
+  use MindwendelWeb.ConnCase, async: true
   import Phoenix.LiveViewTest
   alias Mindwendel.Brainstormings
 
diff --git a/test/mindwendel_web/live/brainstorming_live/show_idea_edit_test.exs b/test/mindwendel_web/live/brainstorming_live/show_idea_edit_test.exs
index 65bc150e..317f6b22 100644
--- a/test/mindwendel_web/live/brainstorming_live/show_idea_edit_test.exs
+++ b/test/mindwendel_web/live/brainstorming_live/show_idea_edit_test.exs
@@ -1,5 +1,5 @@
 defmodule MindwendelWeb.BrainstormingLive.ShowIdeaEditTest do
-  use MindwendelWeb.ConnCase
+  use MindwendelWeb.ConnCase, async: true
   import Phoenix.LiveViewTest
   alias Mindwendel.Brainstormings
   alias Mindwendel.Accounts.User
diff --git a/test/mindwendel_web/live/brainstorming_live/show_sort_by_label_test.exs b/test/mindwendel_web/live/brainstorming_live/show_sort_by_label_test.exs
index 0e5046d8..5c95dad0 100644
--- a/test/mindwendel_web/live/brainstorming_live/show_sort_by_label_test.exs
+++ b/test/mindwendel_web/live/brainstorming_live/show_sort_by_label_test.exs
@@ -1,5 +1,5 @@
 defmodule MindwendelWeb.BrainstormingLive.ShowSortByLabelTest do
-  use MindwendelWeb.ConnCase
+  use MindwendelWeb.ConnCase, async: true
   import Phoenix.LiveViewTest
   alias Mindwendel.Brainstormings
 
diff --git a/test/mindwendel_web/live/brainstorming_live_test.exs b/test/mindwendel_web/live/brainstorming_live_test.exs
index a27e260d..b385b395 100644
--- a/test/mindwendel_web/live/brainstorming_live_test.exs
+++ b/test/mindwendel_web/live/brainstorming_live_test.exs
@@ -1,5 +1,5 @@
 defmodule MindwendelWeb.BrainstormingLiveTest do
-  use MindwendelWeb.ConnCase
+  use MindwendelWeb.ConnCase, async: true
   import Phoenix.LiveViewTest
 
   alias Mindwendel.Brainstormings
diff --git a/test/mindwendel_web/live/label_live/captions_test.exs b/test/mindwendel_web/live/label_live/captions_test.exs
index c4cc258f..0a205195 100644
--- a/test/mindwendel_web/live/label_live/captions_test.exs
+++ b/test/mindwendel_web/live/label_live/captions_test.exs
@@ -1,11 +1,13 @@
 defmodule MindwendelWeb.LabelLive.CaptionsTest do
-  alias MindwendelWeb.LabelLive.CaptionsComponent
-  alias Mindwendel.Brainstormings
-  use MindwendelWeb.ConnCase
+  use MindwendelWeb.ConnCase, async: true
+
   import Phoenix.LiveViewTest
 
+  alias Mindwendel.Brainstormings
   alias Mindwendel.Factory
 
+  alias MindwendelWeb.LabelLive.CaptionsComponent
+
   setup do
     %{brainstorming: Factory.insert!(:brainstorming), user: Factory.insert!(:user)}
   end
diff --git a/test/mindwendel_web/live/live_helpers_test.exs b/test/mindwendel_web/live/live_helpers_test.exs
index f5149b9e..267e6436 100644
--- a/test/mindwendel_web/live/live_helpers_test.exs
+++ b/test/mindwendel_web/live/live_helpers_test.exs
@@ -1,5 +1,5 @@
 defmodule MindwendelWeb.LiveHelpersTest do
-  use MindwendelWeb.ConnCase
+  use MindwendelWeb.ConnCase, async: true
   import Phoenix.LiveViewTest
 
   alias Mindwendel.Factory
diff --git a/test/mindwendel_web/live/response_header_content_security_policy_test.exs b/test/mindwendel_web/live/response_header_content_security_policy_test.exs
index 199430f6..90f2d557 100644
--- a/test/mindwendel_web/live/response_header_content_security_policy_test.exs
+++ b/test/mindwendel_web/live/response_header_content_security_policy_test.exs
@@ -1,5 +1,5 @@
 defmodule MindwendelWeb.ResponseHeaderContentSecurityPolicyTest do
-  use MindwendelWeb.ConnCase
+  use MindwendelWeb.ConnCase, async: true
 
   alias Mindwendel.Factory
 
diff --git a/test/repo/data_migrations/migrate_add_lanes_to_brainstormings_test.exs b/test/repo/data_migrations/migrate_add_lanes_to_brainstormings_test.exs
index e2f20fc6..b19384a0 100644
--- a/test/repo/data_migrations/migrate_add_lanes_to_brainstormings_test.exs
+++ b/test/repo/data_migrations/migrate_add_lanes_to_brainstormings_test.exs
@@ -1,7 +1,7 @@
 defmodule Mindwendel.Repo.DataMigrations.MigrateAddLanesToBrainstormingsTest do
   Code.require_file("./priv/repo/data_migrations/migrate_add_lanes_to_brainstormings.exs")
 
-  use Mindwendel.DataCase
+  use Mindwendel.DataCase, async: true
   alias Mindwendel.Factory
   alias Mindwendel.Lanes
   alias Mindwendel.Repo.DataMigrations.MigrateAddLanesToBrainstormings
diff --git a/test/repo/data_migrations/migrate_idea_labels_test.exs b/test/repo/data_migrations/migrate_idea_labels_test.exs
index 672a2993..1262a5d0 100644
--- a/test/repo/data_migrations/migrate_idea_labels_test.exs
+++ b/test/repo/data_migrations/migrate_idea_labels_test.exs
@@ -1,7 +1,7 @@
 defmodule Mindwendel.Repo.DataMigrations.MigrateIdealLabelsTest do
   Code.require_file("./priv/repo/data_migrations/migrate_idea_labels.exs")
 
-  use Mindwendel.DataCase
+  use Mindwendel.DataCase, async: true
   alias Mindwendel.Factory
   alias Mindwendel.Repo
   alias Mindwendel.Brainstormings.Brainstorming
diff --git a/test/repo/data_migrations/migrate_idea_labels_to_idea_idea_labels_test.exs b/test/repo/data_migrations/migrate_idea_labels_to_idea_idea_labels_test.exs
index c23dce64..5f96ce5b 100644
--- a/test/repo/data_migrations/migrate_idea_labels_to_idea_idea_labels_test.exs
+++ b/test/repo/data_migrations/migrate_idea_labels_to_idea_idea_labels_test.exs
@@ -1,7 +1,7 @@
 defmodule Mindwendel.Repo.DataMigrations.MigrateIdeaLabelsToIdeaIdeaLabelsTest do
   Code.require_file("./priv/repo/data_migrations/migrate_idea_labels_to_idea_idea_labels.exs")
 
-  use Mindwendel.DataCase
+  use Mindwendel.DataCase, async: true
 
   alias Mindwendel.Factory
   alias Mindwendel.Repo