diff --git a/.github/workflows/python.yml b/.github/workflows/python.yml
index 08dc49e..84a8e58 100644
--- a/.github/workflows/python.yml
+++ b/.github/workflows/python.yml
@@ -2,9 +2,8 @@ name: Test against different Python version
 
 on:
   push:
-    branches: master
-  pull_request:
     branches: [ master ]
+  pull_request:
 
 jobs:
   python_tests:
@@ -17,7 +16,7 @@ jobs:
       matrix:
         # Python version(s) to use when running the tests
         # # https://github.com/actions/python-versions/blob/main/versions-manifest.json
-        python:
+        python-version:
           - "3.6"
           - "3.7"
           - "3.8"
@@ -43,7 +42,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v2
       with:
-        python-version: ${{ matrix.python }}
+        python-version: ${{ matrix.python-version }}
 
     # https://github.com/actions/cache/blob/main/examples.md#using-pip-to-get-cache-location
     - name: Get pip cache dir
@@ -75,5 +74,13 @@ jobs:
         "./sql/populate.sh"
         mysql --protocol=tcp --port=53306 -uindex_digest -pqwerty index_digest -v -e '\s; SHOW TABLES; SHOW DATABASES;'
 
-    - name: Tests
-      run: make test
+    - name: Tests with code coverage
+      run: make coverage
+
+    # https://coveralls-python.readthedocs.io/en/latest/usage/index.html
+    # upload coverage report for just one of Python version matrix runs
+    - name: Upload coverage report to Coveralls
+      if: matrix.python-version == '3.9'
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      run: coveralls --service=github
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 75e4e9e..580d8f0 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -2,7 +2,7 @@ name: Integration tests
 
 on:
   push:
-    branches: master
+    branches: [ master ]
   pull_request:
 
 jobs:
diff --git a/Makefile b/Makefile
index 163b47f..b574f0b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,23 +1,14 @@
-project_name = indexdigest
-coverage_options = --include='$(project_name)/*' --omit='$(project_name)/test/*'
-
 install:
 	pip install -U -e .[dev]
 
 test:
-	pytest -x $(project_name) -o log_cli=true -o log_cli_level=warning
+	pytest -vv -o log_cli=true -o log_cli_level=warning
 
 coverage:
-	rm -f .coverage*
-	rm -rf htmlcov/*
-	coverage run -p -m pytest -x $(project_name)
-	coverage combine
-	coverage html -d htmlcov $(coverage_options)
-	coverage xml -i
-	coverage report $(coverage_options)
+	pytest -vv --cov=indexdigest --cov-report=term --cov-report=xml --cov-report=html --cov-fail-under=93
 
 lint:
-	pylint $(project_name)/ --ignore=test
+	pylint indexdigest/ --ignore=test
 
 demo:
 	docker run --network=host -t macbre/index-digest:latest mysql://index_digest:qwerty@127.0.0.1/index_digest --analyze-data --skip-checks=non_utf_columns --skip-tables=0028_no_time
diff --git a/README.md b/README.md
index 1f05747..9590f7f 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@
 
 [![PyPI](https://img.shields.io/pypi/v/indexdigest.svg)](https://pypi.python.org/pypi/indexdigest)
 [![Docker Hub](https://img.shields.io/docker/pulls/macbre/index-digest.svg)](https://hub.docker.com/r/macbre/index-digest/)
+[![Coverage Status](https://coveralls.io/repos/github/macbre/index-digest/badge.svg?branch=master)](https://coveralls.io/github/macbre/index-digest?branch=master)
 
 Analyses your database queries and schema and suggests indices improvements. You can use `index-digest` as **your database linter**. The goal is to **provide the user with actionable reports** instead of just a list of statistics and schema details. Inspired by [Percona's `pt-index-usage`](https://www.percona.com/doc/percona-toolkit/LATEST/pt-index-usage.html).
 
diff --git a/setup.py b/setup.py
index 109b3e5..fe58a8c 100644
--- a/setup.py
+++ b/setup.py
@@ -50,8 +50,10 @@
     extras_require={
         'dev': [
             'coverage==5.5',
+            'coveralls==3.1.0',
             'pylint==2.8.3',
             'pytest==6.2.4',
+            'pytest-cov==2.12.1',
             'twine==3.4.1',
         ]
     },