diff --git a/.circleci/config.yml b/.circleci/config.yml
index 3bf72c3a6d..2cbddf2e3c 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -424,12 +424,10 @@ jobs:
       - run:
           name: Run tests
           command: .circleci/unittest/linux/scripts/run_test.sh
-      - run:
-          name: Post process
-          command: .circleci/unittest/linux/scripts/post_process.sh
       - store_test_results:
           path: test-results
-
+      - store_artifacts:
+          path: test/htmlcov
   unittest_linux_gpu:
     <<: *binary_common
     machine:
@@ -456,11 +454,10 @@ jobs:
       - run:
           name: Run tests
           command: docker run -t --gpus all -v $PWD:$PWD -w $PWD "${image_name}" .circleci/unittest/linux/scripts/run_test.sh
-      - run:
-          name: Post Process
-          command: docker run -t --gpus all -v $PWD:$PWD -w $PWD "${image_name}" .circleci/unittest/linux/scripts/post_process.sh
       - store_test_results:
           path: test-results
+      - store_artifacts:
+          path: test/htmlcov
 
   unittest_windows_cpu:
     <<: *binary_common
@@ -479,11 +476,10 @@ jobs:
       - run:
           name: Run tests
           command: .circleci/unittest/windows/scripts/run_test.sh
-      - run:
-          name: Post process
-          command: .circleci/unittest/windows/scripts/post_process.sh
       - store_test_results:
           path: test-results
+      - store_artifacts:
+          path: test/htmlcov
 
   unittest_windows_gpu:
     <<: *binary_common
@@ -505,11 +501,10 @@ jobs:
       - run:
           name: Run tests
           command: .circleci/unittest/windows/scripts/run_test.sh
-      - run:
-          name: Post process
-          command: .circleci/unittest/windows/scripts/post_process.sh
       - store_test_results:
           path: test-results
+      - store_artifacts:
+          path: test/htmlcov
 
   unittest_macos_cpu:
     <<: *binary_common
@@ -532,11 +527,10 @@ jobs:
       - run:
           name: Run tests
           command: .circleci/unittest/linux/scripts/run_test.sh
-      - run:
-          name: Post process
-          command: .circleci/unittest/linux/scripts/post_process.sh
       - store_test_results:
           path: test-results
+      - store_artifacts:
+          path: test/htmlcov
 
   stylecheck:
     <<: *binary_common
diff --git a/.circleci/config.yml.in b/.circleci/config.yml.in
index 8e01b1da56..f15767041e 100644
--- a/.circleci/config.yml.in
+++ b/.circleci/config.yml.in
@@ -424,12 +424,10 @@ jobs:
       - run:
           name: Run tests
           command: .circleci/unittest/linux/scripts/run_test.sh
-      - run:
-          name: Post process
-          command: .circleci/unittest/linux/scripts/post_process.sh
       - store_test_results:
           path: test-results
-
+      - store_artifacts:
+          path: test/htmlcov
   unittest_linux_gpu:
     <<: *binary_common
     machine:
@@ -456,11 +454,10 @@ jobs:
       - run:
           name: Run tests
           command: docker run -t --gpus all -v $PWD:$PWD -w $PWD "${image_name}" .circleci/unittest/linux/scripts/run_test.sh
-      - run:
-          name: Post Process
-          command: docker run -t --gpus all -v $PWD:$PWD -w $PWD "${image_name}" .circleci/unittest/linux/scripts/post_process.sh
       - store_test_results:
           path: test-results
+      - store_artifacts:
+          path: test/htmlcov
 
   unittest_windows_cpu:
     <<: *binary_common
@@ -479,11 +476,10 @@ jobs:
       - run:
           name: Run tests
           command: .circleci/unittest/windows/scripts/run_test.sh
-      - run:
-          name: Post process
-          command: .circleci/unittest/windows/scripts/post_process.sh
       - store_test_results:
           path: test-results
+      - store_artifacts:
+          path: test/htmlcov
 
   unittest_windows_gpu:
     <<: *binary_common
@@ -505,11 +501,10 @@ jobs:
       - run:
           name: Run tests
           command: .circleci/unittest/windows/scripts/run_test.sh
-      - run:
-          name: Post process
-          command: .circleci/unittest/windows/scripts/post_process.sh
       - store_test_results:
           path: test-results
+      - store_artifacts:
+          path: test/htmlcov
 
   unittest_macos_cpu:
     <<: *binary_common
@@ -532,11 +527,10 @@ jobs:
       - run:
           name: Run tests
           command: .circleci/unittest/linux/scripts/run_test.sh
-      - run:
-          name: Post process
-          command: .circleci/unittest/linux/scripts/post_process.sh
       - store_test_results:
           path: test-results
+      - store_artifacts:
+          path: test/htmlcov
 
   stylecheck:
     <<: *binary_common
diff --git a/.circleci/unittest/linux/scripts/install.sh b/.circleci/unittest/linux/scripts/install.sh
index 5638a28850..3b0cd4bc4c 100755
--- a/.circleci/unittest/linux/scripts/install.sh
+++ b/.circleci/unittest/linux/scripts/install.sh
@@ -56,5 +56,5 @@ fi
 (
     set -x
     conda install -y -c conda-forge ${NUMBA_DEV_CHANNEL} 'librosa>=0.8.0' parameterized 'requests>=2.20'
-    pip install kaldi-io SoundFile codecov pytest pytest-cov scipy
+    pip install kaldi-io SoundFile coverage pytest pytest-cov scipy
 )
diff --git a/.circleci/unittest/linux/scripts/post_process.sh b/.circleci/unittest/linux/scripts/post_process.sh
deleted file mode 100755
index a84a0dea55..0000000000
--- a/.circleci/unittest/linux/scripts/post_process.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-
-set -e
-
-eval "$(./conda/bin/conda shell.bash hook)"
-conda activate ./env
-
-codecov
diff --git a/.circleci/unittest/linux/scripts/run_test.sh b/.circleci/unittest/linux/scripts/run_test.sh
index e083743630..4e8d24748b 100755
--- a/.circleci/unittest/linux/scripts/run_test.sh
+++ b/.circleci/unittest/linux/scripts/run_test.sh
@@ -24,3 +24,4 @@ declare -a args=(
 
 cd test
 pytest "${args[@]}" torchaudio_unittest
+coverage html
diff --git a/.circleci/unittest/windows/scripts/install.sh b/.circleci/unittest/windows/scripts/install.sh
index be0c890614..9ed4f203ad 100644
--- a/.circleci/unittest/windows/scripts/install.sh
+++ b/.circleci/unittest/windows/scripts/install.sh
@@ -44,5 +44,5 @@ fi
 (
     set -x
     conda install -y -c conda-forge ${NUMBA_DEV_CHANNEL} 'librosa>=0.8.0' parameterized 'requests>=2.20'
-    pip install kaldi-io SoundFile codecov pytest pytest-cov scipy
+    pip install kaldi-io SoundFile coverage pytest pytest-cov scipy
 )
diff --git a/.circleci/unittest/windows/scripts/post_process.sh b/.circleci/unittest/windows/scripts/post_process.sh
deleted file mode 100644
index b132113194..0000000000
--- a/.circleci/unittest/windows/scripts/post_process.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-
-set -e
-
-eval "$(./conda/Scripts/conda.exe 'shell.bash' 'hook')"
-conda activate ./env
-
-codecov
diff --git a/.circleci/unittest/windows/scripts/run_test.sh b/.circleci/unittest/windows/scripts/run_test.sh
index 7fdd1d4c6d..c6e7ffd37f 100644
--- a/.circleci/unittest/windows/scripts/run_test.sh
+++ b/.circleci/unittest/windows/scripts/run_test.sh
@@ -8,3 +8,4 @@ conda activate ./env
 python -m torch.utils.collect_env
 cd test
 pytest --cov=torchaudio --junitxml=../test-results/junit.xml -v --durations 20 torchaudio_unittest
+coverage html