diff --git a/packages/dart_firebase_admin/lib/src/app/firebase_admin.dart b/packages/dart_firebase_admin/lib/src/app/firebase_admin.dart
index 5913eda..9238723 100644
--- a/packages/dart_firebase_admin/lib/src/app/firebase_admin.dart
+++ b/packages/dart_firebase_admin/lib/src/app/firebase_admin.dart
@@ -24,8 +24,17 @@ class FirebaseAdminApp {
   /// Use the Firebase Emulator Suite to run the app locally.
   void useEmulator() {
     _isUsingEmulator = true;
-    authApiHost = Uri.http('127.0.0.1:9099', 'identitytoolkit.googleapis.com/');
-    firestoreApiHost = Uri.http('127.0.0.1:8080', '/');
+    final env =
+        Zone.current[envSymbol] as Map<String, String>? ?? Platform.environment;
+
+    authApiHost = Uri.http(
+      env['FIREBASE_AUTH_EMULATOR_HOST'] ?? '127.0.0.1:9099',
+      'identitytoolkit.googleapis.com/',
+    );
+    firestoreApiHost = Uri.http(
+      env['FIRESTORE_EMULATOR_HOST'] ?? '127.0.0.1:8080',
+      '/',
+    );
   }
 
   @internal
diff --git a/packages/dart_firebase_admin/test/firebase_admin_app_test.dart b/packages/dart_firebase_admin/test/firebase_admin_app_test.dart
index 132cfc2..6830cc1 100644
--- a/packages/dart_firebase_admin/test/firebase_admin_app_test.dart
+++ b/packages/dart_firebase_admin/test/firebase_admin_app_test.dart
@@ -1,3 +1,5 @@
+import 'dart:async';
+
 import 'package:dart_firebase_admin/src/app.dart';
 import 'package:test/test.dart';
 
@@ -17,21 +19,36 @@ void main() {
       );
     });
 
-    test('useEmulator() sets the apiHost to the emulator', () {
-      final app = FirebaseAdminApp.initializeApp(
-        'dart-firebase-admin',
-        Credential.fromApplicationDefaultCredentials(),
-      );
+    test(
+        'useEmulator() uses environment variables to set apiHost to the emulator',
+        () async {
+      const firebaseAuthEmulatorHost = '127.0.0.1:9000';
+      const firestoreEmulatorHost = '127.0.0.1:8000';
+      final testEnv = <String, String>{
+        'FIREBASE_AUTH_EMULATOR_HOST': firebaseAuthEmulatorHost,
+        'FIRESTORE_EMULATOR_HOST': firestoreEmulatorHost,
+      };
 
-      app.useEmulator();
+      await runZoned(
+        zoneValues: {envSymbol: testEnv},
+        () async {
+          final app = FirebaseAdminApp.initializeApp(
+            'dart-firebase-admin',
+            Credential.fromApplicationDefaultCredentials(),
+          );
 
-      expect(
-        app.authApiHost,
-        Uri.http('127.0.0.1:9099', 'identitytoolkit.googleapis.com/'),
-      );
-      expect(
-        app.firestoreApiHost,
-        Uri.http('127.0.0.1:8080', '/'),
+          app.useEmulator();
+
+          expect(
+            app.authApiHost,
+            Uri.http(
+                firebaseAuthEmulatorHost, 'identitytoolkit.googleapis.com/'),
+          );
+          expect(
+            app.firestoreApiHost,
+            Uri.http(firestoreEmulatorHost, '/'),
+          );
+        },
       );
     });
   });