diff --git a/mediapipe/tasks/cc/components/processors/classification_postprocessing_graph_test.cc b/mediapipe/tasks/cc/components/processors/classification_postprocessing_graph_test.cc
index 6dff64b1b..a61ffa6b1 100644
--- a/mediapipe/tasks/cc/components/processors/classification_postprocessing_graph_test.cc
+++ b/mediapipe/tasks/cc/components/processors/classification_postprocessing_graph_test.cc
@@ -520,7 +520,7 @@ TEST_F(PostprocessingTest, SucceedsWithoutMetadata) {
       auto poller,
       BuildGraph(kQuantizedImageClassifierWithoutMetadata, options));
   // Build input tensors.
-  std::vector<uint8> tensor(kMobileNetNumClasses, 0);
+  std::vector<uint8_t> tensor(kMobileNetNumClasses, 0);
   tensor[1] = 18;
   tensor[2] = 16;
 
@@ -552,7 +552,7 @@ TEST_F(PostprocessingTest, SucceedsWithMetadata) {
   MP_ASSERT_OK_AND_ASSIGN(
       auto poller, BuildGraph(kQuantizedImageClassifierWithMetadata, options));
   // Build input tensors.
-  std::vector<uint8> tensor(kMobileNetNumClasses, 0);
+  std::vector<uint8_t> tensor(kMobileNetNumClasses, 0);
   tensor[1] = 12;
   tensor[2] = 14;
   tensor[3] = 16;
@@ -589,7 +589,7 @@ TEST_F(PostprocessingTest, SucceedsWithScoreCalibration) {
       auto poller,
       BuildGraph(kQuantizedImageClassifierWithDummyScoreCalibration, options));
   // Build input tensors.
-  std::vector<uint8> tensor(kMobileNetNumClasses, 0);
+  std::vector<uint8_t> tensor(kMobileNetNumClasses, 0);
   tensor[1] = 12;
   tensor[2] = 14;
   tensor[3] = 16;
@@ -677,11 +677,11 @@ TEST_F(PostprocessingTest, SucceedsWithTimestamps) {
       auto poller, BuildGraph(kQuantizedImageClassifierWithMetadata, options,
                               /*connect_timestamps=*/true));
   // Build input tensors.
-  std::vector<uint8> tensor_0(kMobileNetNumClasses, 0);
+  std::vector<uint8_t> tensor_0(kMobileNetNumClasses, 0);
   tensor_0[1] = 12;
   tensor_0[2] = 14;
   tensor_0[3] = 16;
-  std::vector<uint8> tensor_1(kMobileNetNumClasses, 0);
+  std::vector<uint8_t> tensor_1(kMobileNetNumClasses, 0);
   tensor_1[5] = 12;
   tensor_1[6] = 14;
   tensor_1[7] = 16;