diff --git a/mediapipe/modules/objectron/calculators/lift_2d_frame_annotation_to_3d_calculator.cc b/mediapipe/modules/objectron/calculators/lift_2d_frame_annotation_to_3d_calculator.cc
index 1405e5ac..5e5df78b 100644
--- a/mediapipe/modules/objectron/calculators/lift_2d_frame_annotation_to_3d_calculator.cc
+++ b/mediapipe/modules/objectron/calculators/lift_2d_frame_annotation_to_3d_calculator.cc
@@ -70,7 +70,7 @@ class Lift2DFrameAnnotationTo3DCalculator : public CalculatorBase {
   // In a single MediaPipe session, the IDs are unique.
   // Also assign timestamp for the FrameAnnotation to be the input packet
   // timestamp.
-  void AssignObjectIdAndTimestamp(int64 timestamp_us,
+  void AssignObjectIdAndTimestamp(int64_t timestamp_us,
                                   FrameAnnotation* annotation);
   std::unique_ptr<Decoder> decoder_;
   Lift2DFrameAnnotationTo3DCalculatorOptions options_;
@@ -159,7 +159,7 @@ absl::Status Lift2DFrameAnnotationTo3DCalculator::LoadOptions(
 }
 
 void Lift2DFrameAnnotationTo3DCalculator::AssignObjectIdAndTimestamp(
-    int64 timestamp_us, FrameAnnotation* annotation) {
+    int64_t timestamp_us, FrameAnnotation* annotation) {
   for (auto& ann : *annotation->mutable_annotations()) {
     ann.set_object_id(GetNextObjectId());
   }