diff --git a/packages/firebase_core/firebase_core/CHANGELOG.md b/packages/firebase_core/firebase_core/CHANGELOG.md
index 5b4899b8d09c..b953d73aaddc 100644
--- a/packages/firebase_core/firebase_core/CHANGELOG.md
+++ b/packages/firebase_core/firebase_core/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.4.4+2
+
+* Update dependency on firebase_core_platform_interface to 1.0.4.
+
 ## 0.4.4+1
 
 * Make the pedantic dev_dependency explicit.
diff --git a/packages/firebase_core/firebase_core/pubspec.yaml b/packages/firebase_core/firebase_core/pubspec.yaml
index 5285d8ccafe7..59e5f965e989 100644
--- a/packages/firebase_core/firebase_core/pubspec.yaml
+++ b/packages/firebase_core/firebase_core/pubspec.yaml
@@ -2,7 +2,7 @@ name: firebase_core
 description: Flutter plugin for Firebase Core, enabling connecting to multiple
   Firebase apps.
 homepage: https://github.com/FirebaseExtended/flutterfire/tree/master/packages/firebase_core/firebase_core
-version: 0.4.4+1
+version: 0.4.4+2
 
 flutter:
   plugin:
@@ -18,7 +18,7 @@ flutter:
         default_package: firebase_core_web
 
 dependencies:
-  firebase_core_platform_interface: ^1.0.0
+  firebase_core_platform_interface: ^1.0.4
   flutter:
     sdk: flutter
   meta: "^1.0.5"
@@ -37,6 +37,7 @@ dev_dependencies:
   flutter_test:
     sdk: flutter
   mockito: ^4.1.1
+  plugin_platform_interface: ^1.0.2
 
 environment:
   sdk: ">=2.0.0-dev.28.0 <3.0.0"
diff --git a/packages/firebase_core/firebase_core/test/firebase_core_test.dart b/packages/firebase_core/firebase_core/test/firebase_core_test.dart
index 94d059094ba8..a917d15623c8 100755
--- a/packages/firebase_core/firebase_core/test/firebase_core_test.dart
+++ b/packages/firebase_core/firebase_core/test/firebase_core_test.dart
@@ -6,6 +6,7 @@ import 'package:firebase_core/firebase_core.dart';
 import 'package:firebase_core_platform_interface/firebase_core_platform_interface.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:mockito/mockito.dart';
+import 'package:plugin_platform_interface/plugin_platform_interface.dart';
 
 void main() {
   TestWidgetsFlutterBinding.ensureInitialized();
@@ -31,7 +32,6 @@ void main() {
 
     setUp(() async {
       mock = MockFirebaseCore();
-      when(mock.isMock).thenReturn(true);
       FirebaseCorePlatform.instance = mock;
 
       final PlatformFirebaseApp app = PlatformFirebaseApp(
@@ -102,4 +102,6 @@ void main() {
   });
 }
 
-class MockFirebaseCore extends Mock implements FirebaseCorePlatform {}
+class MockFirebaseCore extends Mock
+    with MockPlatformInterfaceMixin
+    implements FirebaseCorePlatform {}