diff --git a/lib/src/dio_firebase_performance.dart b/lib/src/dio_firebase_performance.dart
index 8a1ea4f..5bdee86 100644
--- a/lib/src/dio_firebase_performance.dart
+++ b/lib/src/dio_firebase_performance.dart
@@ -27,7 +27,7 @@ class DioFirebasePerformanceInterceptor extends Interceptor {
       RequestOptions options, RequestInterceptorHandler handler) async {
     try {
       final metric = FirebasePerformance.instance.newHttpMetric(
-          options.uri.normalized(), options.method.asHttpMethod());
+          options.uri.normalized(), options.method.asHttpMethod()!);
 
       final requestKey = options.extra.hashCode;
       _map[requestKey] = metric;
diff --git a/pubspec.yaml b/pubspec.yaml
index fb3b987..3134b5e 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -9,8 +9,8 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  dio: ^4.0.0-prev3
-  firebase_performance: ^0.6.0
+  dio: ^4.0.0
+  firebase_performance: ^0.7.0+2
 
 dev_dependencies:
   flutter_test: