diff --git a/.github/workflows/python-3-tests.yml b/.github/workflows/python-3-tests.yml
index 2560900c..e6e34b8b 100644
--- a/.github/workflows/python-3-tests.yml
+++ b/.github/workflows/python-3-tests.yml
@@ -16,6 +16,9 @@ jobs:
     strategy:
       matrix:
         python-version: [3.5, 3.6, 3.7, 3.8]
+    env:
+      PYTHON: ${{ matrix.python-version }}
+      OS: 'ubuntu-latest'
 
     steps:
     - uses: actions/checkout@v2
@@ -34,6 +37,12 @@ jobs:
         flake8 --count --ignore=W503,W605 --show-source --statistics pandagg
         # on tests, more laxist: allow "missing whitespace after ','" and "line too long"
         flake8 --count --ignore=W503,W605,E231,E501 --show-source --statistics tests
-    - name: Test with pytest
-      run: |
-        pytest
+    - name: Test with pytest and generate coverage report
+      run:
+        pytest --cov=./ --cov-report=xml
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@v1
+      with:
+        file: ./coverage.xml
+        env_vars: OS,PYTHON
+        fail_ci_if_error: true
diff --git a/README.md b/README.md
index 626e8c4a..17c77050 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 [![PyPI Latest Release](https://img.shields.io/pypi/v/pandagg.svg)](https://pypi.org/project/pandagg/)
-[![License](https://img.shields.io/pypi/l/pandagg.svg)](https://github.com/alkemics/pandagg/blob/master/LICENSE)
-![Python package](https://github.com/alkemics/pandagg/workflows/Python%20package/badge.svg)
+![Python package](https://github.com/alkemics/pandagg/workflows/Python%203%20Tests/badge.svg)
+![Python package](https://github.com/alkemics/pandagg/workflows/Python%202%20Tests/badge.svg)
 
 
 ## What is it?
diff --git a/requirements-test-2.txt b/requirements-test-2.txt
index 4a1ec43a..253650d8 100644
--- a/requirements-test-2.txt
+++ b/requirements-test-2.txt
@@ -1,6 +1,6 @@
 flake8
-coverage
 pytest
+pytest-cov
 # last mock version compatible with P2 (will drop constraint when removing support for P2)
 mock<=3.0.5
 # idem, last pandas compatible version with P2
diff --git a/requirements-test.txt b/requirements-test.txt
index 43a961d8..2c441dda 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1,5 +1,5 @@
 flake8
-coverage
 pytest
+pytest-cov
 mock
 pandas
\ No newline at end of file