diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index 137fe4af..bf84452f 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -62,4 +62,10 @@ jobs:
         shell: bash -el {0}
         run: |
           cd tests
-          pytest
+          pytest --cov=kliff --cov-report=xml
+
+      - uses: codecov/codecov-action@v4
+        if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.10' && github.repository == 'openkim/kliff'
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          file: ./coverage.xml
diff --git a/setup.py b/setup.py
index 77c3a491..1e627542 100644
--- a/setup.py
+++ b/setup.py
@@ -104,6 +104,7 @@ def get_readme():
     extras_require={
         "test": [
             "pytest",
+            "pytest-cov",
             "kimpy",
             "emcee",
             "ptemcee",