diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 80daa20..560fefe 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,8 +21,10 @@ jobs:
 
       - name: Install dependencies
         run: |
+          sudo apt-get install pandoc
           python -m pip install --upgrade pip
-          pip install flake8 pytest pytest-cov
+          pip install flake8 pytest pytest-cov sphinx
+          pip install -r docs/requirements.txt
           pip install -r requirements.txt
           pip install .
 
@@ -33,6 +35,13 @@ jobs:
           # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
           flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
 
+      - name: Build documentation
+        run: |
+          make docs
+
       - name: Run pytest
         run: |
           make test
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v2
diff --git a/.gitignore b/.gitignore
index 22e4c93..f0737f7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 *.pyc
 .DS_Store
 .coverage
+coverage.xml
 .pytest_cache/
 docs/_build
 docs/api
diff --git a/Makefile b/Makefile
index cc9d940..a12536b 100644
--- a/Makefile
+++ b/Makefile
@@ -28,7 +28,7 @@ coverage:
 	coverage report -m
 
 test:
-	pytest --cov=diskmap/
+	pytest --cov=diskmap/ --cov-report=xml
 
 clean:
 	find . -name '*.pyc' -exec rm -f {} +
@@ -43,3 +43,4 @@ clean:
 	rm -rf diskmap.egg-info/
 	rm -rf .pytest_cache/
 	rm -f .coverage
+	rm -f coverage.xml
diff --git a/README.rst b/README.rst
index 9e2531f..6b777ee 100644
--- a/README.rst
+++ b/README.rst
@@ -13,8 +13,8 @@
 .. image:: https://img.shields.io/readthedocs/diskmap
    :target: http://diskmap.readthedocs.io
 
-.. image:: https://img.shields.io/coveralls/github/tomasstolker/diskmap
-   :target: https://coveralls.io/github/tomasstolker/diskmap
+.. image:: https://codecov.io/gh/tomasstolker/diskmap/branch/main/graph/badge.svg?token=UZ7OS5WR9C
+   :target: https://codecov.io/gh/tomasstolker/diskmap
 
 .. image:: https://img.shields.io/codefactor/grade/github/tomasstolker/diskmap
    :target: https://www.codefactor.io/repository/github/tomasstolker/diskmap
@@ -23,7 +23,7 @@
    :target: https://github.com/tomasstolker/diskmap/blob/main/LICENSE
 
 .. image:: https://mybinder.org/badge_logo.svg
- :target: https://mybinder.org/v2/gh/tomasstolker/diskmap/HEAD
+   :target: https://mybinder.org/v2/gh/tomasstolker/diskmap/HEAD
 
 *diskmap* is a tool for scattered light mapping of protoplanetary disks. The disk surface is parameterized with a power law profile or read from an input file. The projected radius and scattering angle are then calculated at each pixel. From this, a 3D deprojected image and a stellar irradiation corrected image are computed. Also a polarized scattering phase function is extracted and an total intensity phase function is estimated.
 
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..e69de29