diff --git a/mediapipe/tasks/ios/core/sources/MPPTaskResult.h b/mediapipe/tasks/ios/core/sources/MPPTaskResult.h
index d15d4f258..4ee7b2fc6 100644
--- a/mediapipe/tasks/ios/core/sources/MPPTaskResult.h
+++ b/mediapipe/tasks/ios/core/sources/MPPTaskResult.h
@@ -26,11 +26,11 @@ NS_SWIFT_NAME(TaskResult)
 /**
  * Timestamp that is associated with the task result object.
  */
-@property(nonatomic, assign, readonly) long timestamp;
+@property(nonatomic, assign, readonly) NSInteger timestampMs;
 
 - (instancetype)init NS_UNAVAILABLE;
 
-- (instancetype)initWithTimestamp:(long)timestamp NS_DESIGNATED_INITIALIZER;
+- (instancetype)initWithTimestampMs:(NSInteger)timestampMs NS_DESIGNATED_INITIALIZER;
 
 @end
 
diff --git a/mediapipe/tasks/ios/core/sources/MPPTaskResult.m b/mediapipe/tasks/ios/core/sources/MPPTaskResult.m
index 7088eb246..6c08014ff 100644
--- a/mediapipe/tasks/ios/core/sources/MPPTaskResult.m
+++ b/mediapipe/tasks/ios/core/sources/MPPTaskResult.m
@@ -16,16 +16,16 @@
 
 @implementation MPPTaskResult
 
-- (instancetype)initWithTimestamp:(long)timestamp {
+- (instancetype)initWithTimestampMs:(NSInteger)timestampMs {
   self = [super init];
   if (self) {
-    _timestamp = timestamp;
+    _timestampMs = timestampMs;
   }
   return self;
 }
 
 - (id)copyWithZone:(NSZone *)zone {
-  return [[MPPTaskResult alloc] initWithTimestamp:self.timestamp];
+  return [[MPPTaskResult alloc] initWithTimestampMs:self.timestampMs];
 }
 
 @end