diff --git a/lib/temporal/metadata.rb b/lib/temporal/metadata.rb
index df7165ea..4bcfade8 100644
--- a/lib/temporal/metadata.rb
+++ b/lib/temporal/metadata.rb
@@ -21,7 +21,9 @@ def generate_activity_metadata(task, namespace)
           workflow_id: task.workflow_execution.workflow_id,
           workflow_name: task.workflow_type.name,
           headers: from_payload_map(task.header&.fields || {}),
-          heartbeat_details: from_details_payloads(task.heartbeat_details)
+          heartbeat_details: from_details_payloads(task.heartbeat_details),
+          scheduled_at: task.scheduled_time.to_time,
+          current_attempt_scheduled_at: task.current_attempt_scheduled_time.to_time
         )
       end
 
diff --git a/lib/temporal/metadata/activity.rb b/lib/temporal/metadata/activity.rb
index c7e7d814..bdca3366 100644
--- a/lib/temporal/metadata/activity.rb
+++ b/lib/temporal/metadata/activity.rb
@@ -3,9 +3,9 @@
 module Temporal
   module Metadata
     class Activity < Base
-      attr_reader :namespace, :id, :name, :task_token, :attempt, :workflow_run_id, :workflow_id, :workflow_name, :headers, :heartbeat_details
+      attr_reader :namespace, :id, :name, :task_token, :attempt, :workflow_run_id, :workflow_id, :workflow_name, :headers, :heartbeat_details, :scheduled_at, :current_attempt_scheduled_at
 
-      def initialize(namespace:, id:, name:, task_token:, attempt:, workflow_run_id:, workflow_id:, workflow_name:, headers: {}, heartbeat_details:)
+      def initialize(namespace:, id:, name:, task_token:, attempt:, workflow_run_id:, workflow_id:, workflow_name:, headers: {}, heartbeat_details:, scheduled_at:, current_attempt_scheduled_at:)
         @namespace = namespace
         @id = id
         @name = name
@@ -16,6 +16,8 @@ def initialize(namespace:, id:, name:, task_token:, attempt:, workflow_run_id:,
         @workflow_name = workflow_name
         @headers = headers
         @heartbeat_details = heartbeat_details
+        @scheduled_at = scheduled_at
+        @current_attempt_scheduled_at = current_attempt_scheduled_at
 
         freeze
       end
@@ -32,7 +34,9 @@ def to_h
           'workflow_run_id' => workflow_run_id,
           'activity_id' => id,
           'activity_name' => name,
-          'attempt' => attempt
+          'attempt' => attempt,
+          'scheduled_at' => scheduled_at.to_s,
+          'current_attempt_scheduled_at' => current_attempt_scheduled_at.to_s,
         }
       end
     end
diff --git a/lib/temporal/testing/local_workflow_context.rb b/lib/temporal/testing/local_workflow_context.rb
index 1c0cdd07..a115eb26 100644
--- a/lib/temporal/testing/local_workflow_context.rb
+++ b/lib/temporal/testing/local_workflow_context.rb
@@ -60,7 +60,9 @@ def execute_activity(activity_class, *input, **args)
           workflow_id: workflow_id,
           workflow_name: nil, # not yet used, but will be in the future
           headers: execution_options.headers,
-          heartbeat_details: nil
+          heartbeat_details: nil,
+          scheduled_at: Time.now,
+          current_attempt_scheduled_at: Time.now,
         )
         context = LocalActivityContext.new(metadata)
 
@@ -108,7 +110,9 @@ def execute_local_activity(activity_class, *input, **args)
           workflow_id: workflow_id,
           workflow_name: nil, # not yet used, but will be in the future
           headers: execution_options.headers,
-          heartbeat_details: nil
+          heartbeat_details: nil,
+          scheduled_at: Time.now,
+          current_attempt_scheduled_at: Time.now,
         )
         context = LocalActivityContext.new(metadata)
 
diff --git a/spec/fabricators/activity_metadata_fabricator.rb b/spec/fabricators/activity_metadata_fabricator.rb
index 06409da6..5fd34e3a 100644
--- a/spec/fabricators/activity_metadata_fabricator.rb
+++ b/spec/fabricators/activity_metadata_fabricator.rb
@@ -11,4 +11,6 @@
   workflow_name 'TestWorkflow'
   headers { {} }
   heartbeat_details nil
+  scheduled_at { Time.now }
+  current_attempt_scheduled_at { Time.now }
 end
diff --git a/spec/fabricators/grpc/activity_task_fabricator.rb b/spec/fabricators/grpc/activity_task_fabricator.rb
index b6fc43fc..8e940a96 100644
--- a/spec/fabricators/grpc/activity_task_fabricator.rb
+++ b/spec/fabricators/grpc/activity_task_fabricator.rb
@@ -11,6 +11,8 @@
   workflow_execution { Fabricate(:api_workflow_execution) }
   current_attempt_scheduled_time { Google::Protobuf::Timestamp.new.tap { |t| t.from_time(Time.now) } }
   started_time { Google::Protobuf::Timestamp.new.tap { |t| t.from_time(Time.now) } }
+  scheduled_time { Google::Protobuf::Timestamp.new.tap { |t| t.from_time(Time.now) } }
+  current_attempt_scheduled_time { Google::Protobuf::Timestamp.new.tap { |t| t.from_time(Time.now) } }
   header do |attrs|
     fields = (attrs[:headers] || {}).each_with_object({}) do |(field, value), h|
       h[field] = Temporal.configuration.converter.to_payload(value)
diff --git a/spec/unit/lib/temporal/metadata/activity_spec.rb b/spec/unit/lib/temporal/metadata/activity_spec.rb
index 4df742be..a07a67a8 100644
--- a/spec/unit/lib/temporal/metadata/activity_spec.rb
+++ b/spec/unit/lib/temporal/metadata/activity_spec.rb
@@ -16,6 +16,8 @@
       expect(subject.workflow_name).to eq(args.workflow_name)
       expect(subject.headers).to eq(args.headers)
       expect(subject.heartbeat_details).to eq(args.heartbeat_details)
+      expect(subject.scheduled_at).to eq(args.scheduled_at)
+      expect(subject.current_attempt_scheduled_at).to eq(args.current_attempt_scheduled_at)
     end
 
     it { is_expected.to be_frozen }
@@ -36,7 +38,9 @@
         'namespace' => subject.namespace,
         'workflow_id' => subject.workflow_id,
         'workflow_name' => subject.workflow_name,
-        'workflow_run_id' => subject.workflow_run_id
+        'workflow_run_id' => subject.workflow_run_id,
+        'scheduled_at' => subject.scheduled_at.to_s,
+        'current_attempt_scheduled_at' => subject.current_attempt_scheduled_at.to_s,
       })
     end
   end