diff --git a/.coveragerc b/.coveragerc
new file mode 100644
index 00000000..292ada21
--- /dev/null
+++ b/.coveragerc
@@ -0,0 +1,2 @@
+[run]
+source = src,tests
diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 7fd60890..e15d6983 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -14,7 +14,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
-      - name: docker build
+      - name: Build container
         run: docker build -t flatpak-external-data-checker .
-      - name: run tests
-        run: docker run -v $PWD:/opt -w /opt flatpak-external-data-checker python3 -m unittest discover --verbose --buffer
+      - name: Run tests in container
+        run: docker run -v $PWD:/opt -w /opt flatpak-external-data-checker python3-coverage run -m unittest discover --verbose --buffer
+      - name: Submit code coverage to Coveralls.io
+        run: docker run --env COVERALLS_REPO_TOKEN=${{ secrets.COVERALLS_REPO_TOKEN }}  -v $PWD:/opt -w /opt coveralls
diff --git a/.gitignore b/.gitignore
index bee8a64b..8177a893 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
 __pycache__
+/.coverage
+/coverage.xml
diff --git a/Dockerfile b/Dockerfile
index 8f67f819..ab1d35ee 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,13 +13,18 @@ RUN apt-get update \
       gir1.2-glib-2.0 \
       gir1.2-json-1.0 \
       python3-apt \
+      python3-coverage \
       python3-gi \
       python3-github \
+      python3-pip \
       python3-ruamel.yaml \
+      python3-setuptools \
       python3-tenacity \
   && apt-get clean \
   && rmdir /var/cache/apt/archives/partial
 
+RUN pip3 install coveralls
+
 ARG USER_ID=1000
 ARG GROUP_ID=1000
 RUN groupadd -g $GROUP_ID user && \