diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 26dac43e1..078a9dbde 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -113,13 +113,13 @@ jobs:
           git diff --cached --exit-code || (echo 'Please run "make generate" to verify generate' && exit 1);
       - name: Test
         run: make test
-      # - name: send coverage
-      #   uses: shogo82148/actions-goveralls@v1
-      #   with:
-      #     path-to-profile: coverage.out
-      #     working-directory: src/github.com/tensorchord/envd
-      #     flag-name: unit-test
-      #     parallel: true
+      - name: send coverage
+        uses: shogo82148/actions-goveralls@v1
+        with:
+          path-to-profile: coverage.out
+          working-directory: ${{ env.GOPATH }}/src/github.com/tensorchord/envd
+          flag-name: ${{ matrix.os }}
+          parallel: true
   build:
     name: build
     needs: setup
@@ -152,3 +152,12 @@ jobs:
             ${{ runner.OS }}-
       - name: Build
         run: make
+
+  # notifies that all test jobs are finished.
+  finish:
+    needs: test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: shogo82148/actions-goveralls@v1
+        with:
+          parallel-finished: true
diff --git a/README.md b/README.md
index 63ad610d3..1f7165887 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,7 @@
 <a href="https://discord.gg/KqswhpVgdU"><img alt="discord invitation link" src="https://img.shields.io/discord/974584200327991326?label=discord&style=social"></a>
 <a href="https://github.com/tensorchord/envd/actions/workflows/CI.yml"><img alt="continuous integration" src="https://github.com/tensorchord/envd/actions/workflows/CI.yml/badge.svg"></a>
 <a href="https://pypi.org/project/envd/"><img alt="envd package donwloads" src="https://static.pepy.tech/personalized-badge/envd?period=month&units=international_system&left_color=grey&right_color=brightgreen&left_text=downloads/month"</a>
+<a href="https://twitter.com/TensorChord"><img src="https://img.shields.io/twitter/follow/tensorchord?style=social" alt="trackgit-views" /></a>
 <a href="https://trackgit.com"><img src="https://us-central1-trackgit-analytics.cloudfunctions.net/token/ping/l3ldvdaswvnjpty9u7l3" alt="trackgit-views" /></a>
 </p>