diff --git a/mediapipe/tasks/cc/vision/hand_landmarker/hand_landmarks_detector_graph.cc b/mediapipe/tasks/cc/vision/hand_landmarker/hand_landmarks_detector_graph.cc
index f7fa83a1..9409303b 100644
--- a/mediapipe/tasks/cc/vision/hand_landmarker/hand_landmarks_detector_graph.cc
+++ b/mediapipe/tasks/cc/vision/hand_landmarker/hand_landmarks_detector_graph.cc
@@ -59,7 +59,6 @@ using ::mediapipe::api2::Output;
 using ::mediapipe::api2::builder::Graph;
 using ::mediapipe::api2::builder::Source;
 using ::mediapipe::tasks::components::utils::AllowIf;
-using ::mediapipe::tasks::core::ModelResources;
 using ::mediapipe::tasks::vision::hand_landmarker::proto::
     HandLandmarksDetectorGraphOptions;
 using LabelItems = mediapipe::proto_ns::Map<int64, ::mediapipe::LabelMapItem>;
diff --git a/mediapipe/tasks/cc/vision/interactive_segmenter/interactive_segmenter.cc b/mediapipe/tasks/cc/vision/interactive_segmenter/interactive_segmenter.cc
index 9d7111e7..b17b3b0d 100644
--- a/mediapipe/tasks/cc/vision/interactive_segmenter/interactive_segmenter.cc
+++ b/mediapipe/tasks/cc/vision/interactive_segmenter/interactive_segmenter.cc
@@ -64,7 +64,6 @@ using ::mediapipe::CalculatorGraphConfig;
 using ::mediapipe::Image;
 using ::mediapipe::NormalizedRect;
 using ::mediapipe::tasks::vision::image_segmenter::ImageSegmenterResult;
-using ::mediapipe::tasks::vision::image_segmenter::proto::SegmenterOptions;
 using ImageSegmenterGraphOptionsProto = ::mediapipe::tasks::vision::
     image_segmenter::proto::ImageSegmenterGraphOptions;
 
diff --git a/mediapipe/util/tracking/tracked_detection_manager.cc b/mediapipe/util/tracking/tracked_detection_manager.cc
index 7da20768..77aab310 100644
--- a/mediapipe/util/tracking/tracked_detection_manager.cc
+++ b/mediapipe/util/tracking/tracked_detection_manager.cc
@@ -21,7 +21,6 @@
 
 namespace {
 
-using ::mediapipe::NormalizedRect;
 using mediapipe::TrackedDetection;
 
 // Checks if a point is out of view.