diff --git a/tests/MarkdownFieldTypeTest.php b/tests/MarkdownFieldTypeTest.php
index 1b964a8..020169a 100644
--- a/tests/MarkdownFieldTypeTest.php
+++ b/tests/MarkdownFieldTypeTest.php
@@ -9,6 +9,7 @@
 use Nimbus\Content\FieldTypeRegistry;
 use Nimbus\Content\UnknownFieldType;
 use Nimbus\Content\Validator;
+use Nimbus\Plugin\PluginCapabilities;
 use Nimbus\Plugin\PluginContext;
 use NimbusCMS\Markdown\MarkdownFieldType;
 use NimbusCMS\Markdown\MarkdownPlugin;
@@ -34,7 +35,7 @@ private function field(array $options = [], bool $required = false): Field
     public function test_the_plugin_registers_its_field_type(): void
     {
         $registry = new FieldTypeRegistry();
-        (new MarkdownPlugin())->register(new PluginContext($registry, MarkdownPlugin::ID));
+        (new MarkdownPlugin())->register(new PluginContext(new PluginCapabilities(fieldTypes: $registry), MarkdownPlugin::ID));
 
         self::assertTrue($registry->has('markdown'));
         self::assertSame('markdown', $registry->get('markdown')->type());
@@ -44,7 +45,7 @@ public function test_the_plugin_registers_its_field_type(): void
     public function test_the_type_appears_in_the_field_picker(): void
     {
         $registry = new FieldTypeRegistry();
-        (new MarkdownPlugin())->register(new PluginContext($registry, MarkdownPlugin::ID));
+        (new MarkdownPlugin())->register(new PluginContext(new PluginCapabilities(fieldTypes: $registry), MarkdownPlugin::ID));
 
         self::assertArrayHasKey('markdown', $registry->choices());
         self::assertSame('Markdown', $registry->choices()['markdown']);
@@ -62,10 +63,10 @@ public function test_the_plugin_id_matches_the_composer_manifest(): void
     public function test_registering_twice_is_rejected_by_core(): void
     {
         $registry = new FieldTypeRegistry();
-        (new MarkdownPlugin())->register(new PluginContext($registry, MarkdownPlugin::ID));
+        (new MarkdownPlugin())->register(new PluginContext(new PluginCapabilities(fieldTypes: $registry), MarkdownPlugin::ID));
 
         $this->expectException(\Nimbus\Content\DuplicateFieldType::class);
-        (new MarkdownPlugin())->register(new PluginContext($registry, MarkdownPlugin::ID));
+        (new MarkdownPlugin())->register(new PluginContext(new PluginCapabilities(fieldTypes: $registry), MarkdownPlugin::ID));
     }
 
     // -------------------------------------------------------- normalization
@@ -125,7 +126,7 @@ public function test_max_length_counts_characters_not_bytes(): void
     public function test_required_empty_is_handled_by_core_not_here(): void
     {
         $registry = new FieldTypeRegistry();
-        (new MarkdownPlugin())->register(new PluginContext($registry, MarkdownPlugin::ID));
+        (new MarkdownPlugin())->register(new PluginContext(new PluginCapabilities(fieldTypes: $registry), MarkdownPlugin::ID));
 
         $collection = new Collection(1, 'posts', 'Posts', '#', '', [$this->field(required: true)], ['kind' => 'collection']);
         $errors     = (new Validator($registry))->validate($collection, ['body' => $this->type->normalize('')]);
@@ -137,7 +138,7 @@ public function test_required_empty_is_handled_by_core_not_here(): void
     public function test_a_valid_required_value_passes_through_core_validation(): void
     {
         $registry = new FieldTypeRegistry();
-        (new MarkdownPlugin())->register(new PluginContext($registry, MarkdownPlugin::ID));
+        (new MarkdownPlugin())->register(new PluginContext(new PluginCapabilities(fieldTypes: $registry), MarkdownPlugin::ID));
 
         $collection = new Collection(1, 'posts', 'Posts', '#', '', [$this->field(required: true)], ['kind' => 'collection']);
         $errors     = (new Validator($registry))->validate($collection, ['body' => $this->type->normalize('# Hello')]);
diff --git a/tests/PackageIntegrationTest.php b/tests/PackageIntegrationTest.php
index 5015fab..b9fda17 100644
--- a/tests/PackageIntegrationTest.php
+++ b/tests/PackageIntegrationTest.php
@@ -7,6 +7,7 @@
 use Nimbus\Content\Field;
 use Nimbus\Content\FieldTypeRegistry;
 use Nimbus\Content\UnknownFieldType;
+use Nimbus\Plugin\PluginCapabilities;
 use Nimbus\Plugin\PluginDiagnostic;
 use Nimbus\Plugin\PluginLoader;
 use NimbusCMS\Markdown\MarkdownPlugin;
@@ -91,7 +92,7 @@ public function test_composer_discovery_registers_the_field_type(): void
     {
         $registry    = new FieldTypeRegistry();
         $loader      = new PluginLoader($this->installedAs());
-        $diagnostics = $loader->load($registry);
+        $diagnostics = $loader->load(new PluginCapabilities(fieldTypes: $registry));
 
         self::assertSame([], $diagnostics, 'a correctly installed package must load cleanly');
         self::assertSame(
@@ -108,7 +109,7 @@ public function test_composer_discovery_registers_the_field_type(): void
     public function test_core_field_types_are_untouched_by_installation(): void
     {
         $registry = new FieldTypeRegistry();
-        (new PluginLoader($this->installedAs()))->load($registry);
+        (new PluginLoader($this->installedAs()))->load(new PluginCapabilities(fieldTypes: $registry));
 
         foreach (['text', 'textarea', 'number', 'boolean', 'relation'] as $core) {
             self::assertSame('core', $registry->providerOf($core));
@@ -121,7 +122,7 @@ public function test_disabling_the_package_leaves_the_type_unregistered(): void
     {
         $registry    = new FieldTypeRegistry();
         $loader      = new PluginLoader($this->installedAs(), [MarkdownPlugin::ID => false]);
-        $diagnostics = $loader->load($registry);
+        $diagnostics = $loader->load(new PluginCapabilities(fieldTypes: $registry));
 
         self::assertSame([], $loader->registered());
         self::assertFalse($registry->has('markdown'));
@@ -133,7 +134,7 @@ public function test_disabling_the_package_leaves_the_type_unregistered(): void
     public function test_with_the_package_disabled_writes_are_blocked_and_content_is_kept(): void
     {
         $registry = new FieldTypeRegistry();
-        (new PluginLoader($this->installedAs(), [MarkdownPlugin::ID => false]))->load($registry);
+        (new PluginLoader($this->installedAs(), [MarkdownPlugin::ID => false]))->load(new PluginCapabilities(fieldTypes: $registry));
 
         $field  = new Field('body', 'Body', 'markdown');
         $stored = "# Still here\n\nWith **bold** text.";
@@ -160,11 +161,11 @@ public function test_re_enabling_restores_the_field_type(): void
         $path = $this->installedAs();
 
         $disabled = new FieldTypeRegistry();
-        (new PluginLoader($path, [MarkdownPlugin::ID => false]))->load($disabled);
+        (new PluginLoader($path, [MarkdownPlugin::ID => false]))->load(new PluginCapabilities(fieldTypes: $disabled));
         self::assertFalse($disabled->has('markdown'));
 
         $enabled = new FieldTypeRegistry();
-        (new PluginLoader($path, [MarkdownPlugin::ID => true]))->load($enabled);
+        (new PluginLoader($path, [MarkdownPlugin::ID => true]))->load(new PluginCapabilities(fieldTypes: $enabled));
 
         self::assertTrue($enabled->has('markdown'), 'flipping the switch back is all it takes');
         self::assertSame('markdown', $enabled->get('markdown')->type());
@@ -182,7 +183,7 @@ public function test_a_second_package_cannot_take_this_plugins_id(): void
 
         $registry    = new FieldTypeRegistry();
         $loader      = new PluginLoader($this->installedJson);
-        $diagnostics = $loader->load($registry);
+        $diagnostics = $loader->load(new PluginCapabilities(fieldTypes: $registry));
 
         self::assertSame([MarkdownPlugin::ID => $manifest['name']], $loader->registered());
         self::assertCount(1, $diagnostics);