diff --git a/lib/game/components/controlled_spaceship_ramp.dart b/lib/game/components/controlled_spaceship_ramp.dart
index 6784ffa0..566685db 100644
--- a/lib/game/components/controlled_spaceship_ramp.dart
+++ b/lib/game/components/controlled_spaceship_ramp.dart
@@ -20,6 +20,8 @@ class ControlledSpaceshipRamp extends Component
     controller = SpaceshipRampController(this);
   }
 
+  // TODO(ruimiguel): check Blueprint contact callbacks bug and then change
+  // this class to extends from SpaceshipRamp.
   late final SpaceshipRamp _spaceshipRamp;
 
   @override
diff --git a/packages/pinball_components/lib/src/components/spaceship_ramp.dart b/packages/pinball_components/lib/src/components/spaceship_ramp.dart
index d0b9d9a3..fdd038e0 100644
--- a/packages/pinball_components/lib/src/components/spaceship_ramp.dart
+++ b/packages/pinball_components/lib/src/components/spaceship_ramp.dart
@@ -15,6 +15,14 @@ class SpaceshipRamp extends Blueprint {
   SpaceshipRamp()
       : super(
           components: [
+            // TODO(ruimiguel): once blueprint contactcallback works well, add
+            // this sensors here.
+            /*
+            SpaceshipRampSensor(type: SpaceshipRampSensorType.door)
+              ..initialPosition = Vector2(1.7, -20),
+            SpaceshipRampSensor(type: SpaceshipRampSensorType.inside)
+              ..initialPosition = Vector2(1.7, -21.5),
+            */
             _SpaceshipRampOpening(
               outsidePriority: RenderPriority.ballOnBoard,
               rotation: math.pi,
diff --git a/pubspec.lock b/pubspec.lock
index 31aed6af..1a502f37 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -7,14 +7,14 @@ packages:
       name: _fe_analyzer_shared
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "39.0.0"
+    version: "31.0.0"
   analyzer:
     dependency: transitive
     description:
       name: analyzer
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.0.0"
+    version: "2.8.0"
   args:
     dependency: transitive
     description:
@@ -71,6 +71,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.3.1"
+  cli_util:
+    dependency: transitive
+    description:
+      name: cli_util
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.3.5"
   clock:
     dependency: transitive
     description:
@@ -314,7 +321,7 @@ packages:
       name: js
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.6.4"
+    version: "0.6.3"
   json_annotation:
     dependency: transitive
     description:
@@ -349,7 +356,7 @@ packages:
       name: material_color_utilities
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.4"
+    version: "0.1.3"
   meta:
     dependency: transitive
     description:
@@ -412,7 +419,7 @@ packages:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.1"
+    version: "1.8.0"
   path_provider:
     dependency: transitive
     description:
@@ -585,7 +592,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.2"
+    version: "1.8.1"
   stack_trace:
     dependency: transitive
     description:
@@ -627,21 +634,21 @@ packages:
       name: test
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.21.1"
+    version: "1.19.5"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.9"
+    version: "0.4.8"
   test_core:
     dependency: transitive
     description:
       name: test_core
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.13"
+    version: "0.4.9"
   typed_data:
     dependency: transitive
     description:
@@ -662,7 +669,7 @@ packages:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.2"
+    version: "2.1.1"
   very_good_analysis:
     dependency: "direct dev"
     description: