diff --git a/.github/workflows/nightly-tests.yml b/.github/workflows/nightly-tests.yml
index 88e098c..07f1660 100644
--- a/.github/workflows/nightly-tests.yml
+++ b/.github/workflows/nightly-tests.yml
@@ -15,7 +15,7 @@ jobs:
 
     services:
       postgres:
-        image: postgres:12.7
+        image: postgres:15
         env:
           POSTGRES_PASSWORD: postgres
         ports:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 3ceb513..100bafc 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -65,6 +65,7 @@ jobs:
           name: coverage-data
           path: .coverage.*
           if-no-files-found: ignore
+          include-hidden-files: true
           retention-days: 1
 
   coverage:
diff --git a/tests/test_blocks.py b/tests/test_blocks.py
index 428a33d..02fc507 100644
--- a/tests/test_blocks.py
+++ b/tests/test_blocks.py
@@ -51,19 +51,19 @@ def test_media_block_get_form_state(self):
     def test_abstract_media_block_queryset(self):
         block = AbstractMediaChooserBlock()
 
-        self.assertQuerysetEqual(
+        self.assertQuerySetEqual(
             block.field.queryset.order_by("pk"),
             Media.objects.order_by("pk"),
         )
 
         block = AbstractMediaChooserBlock(media_type="audio")
-        self.assertQuerysetEqual(
+        self.assertQuerySetEqual(
             block.field.queryset.order_by("pk"),
             Media.objects.filter(type="audio").order_by("pk"),
         )
 
         block = AbstractMediaChooserBlock(media_type="subspace-transmission")
-        self.assertQuerysetEqual(block.field.queryset, Media.objects.none())
+        self.assertQuerySetEqual(block.field.queryset, Media.objects.none())
 
     def test_audio_chooser_block_type(self):
         block = AudioChooserBlock()