diff --git a/lib/firebase_functions_interop.dart b/lib/firebase_functions_interop.dart
index abfe5fe..0751590 100644
--- a/lib/firebase_functions_interop.dart
+++ b/lib/firebase_functions_interop.dart
@@ -409,6 +409,12 @@ class ScheduleBuilder {
 
   ScheduleBuilder._(this.nativeInstance);
 
+  /// define a time zone for the scheduler to run
+  ScheduleBuilder timeZone(String timeZone) {
+    nativeInstance.timeZone(timeZone);
+    return this;
+  }
+
   /// Event handler that fires every time a schedule occurs.
   js.CloudFunction onRun(DataEventHandler<Message> handler) {
     dynamic wrapper(js.EventContext jsContext) =>
diff --git a/lib/src/bindings.dart b/lib/src/bindings.dart
index a2d51ec..60cfaf0 100644
--- a/lib/src/bindings.dart
+++ b/lib/src/bindings.dart
@@ -270,6 +270,10 @@ abstract class TopicBuilder {
 @JS()
 @anonymous
 abstract class ScheduleBuilder {
+
+  /// define a time zone for the scheduler to run
+  external ScheduleBuilder timeZone(String timeZone);
+
   /// Event handler that fires every time a schedule occurs.
   external CloudFunction onRun(
       dynamic handler(EventContext context));
diff --git a/pubspec.yaml b/pubspec.yaml
index d2119c3..9e4a699 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -12,8 +12,11 @@ dependencies:
   meta: ^1.1.8
   node_interop: ^1.0.3
   node_io: ^1.0.1+2
-  node_http: ^1.0.0
-  firebase_admin_interop: ^2.0.0
+  node_http: ^1.0.1
+#  firebase_admin_interop: ^2.1.0
+  firebase_admin_interop:
+    path: /Users/adrian/Documents/DevSystem/projects/opensource/firebase-admin-interop
+
 
 dev_dependencies:
   test: ^1.12.0