diff --git a/.coveragerc b/.coveragerc
index 5fbefdc..51018c5 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -3,9 +3,7 @@
 branch = True
 source = src/
 
-omit =
-    archive/*
-    */.local/*
+# Do not omit tests folder as the tests coverage could not be 100%
 
 [report]
 # Regexes for lines to exclude from consideration
@@ -25,7 +23,8 @@ exclude_lines =
     if 0:
     if __name__ == .__main__.:
 
-ignore_errors = True
+    # Don't complain about function overloading
+    @overload
 
 [html]
 directory = coverage_html_report
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ccf9559..386d98a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -31,18 +31,31 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-python@v4
+      - name: Set up Python
+        uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
 
-      - run: pip install .[full,tests,lint]
+      - name: Install tests and lint dependencies
+        run: pip install .[tests,lint]
 
-      - run: flake8
-      - run: mypy
+      - name: Lint
+        run: flake8
+      - name: Type check
+        run: mypy
 
-      - run: pytest
-# codecov coverage
-# - run: pip install codecov pytest-cov
-# - run: pytest --cov --cov-report=xml
-# - name: Upload coverage to Codecov
-#   uses: codecov/codecov-action@v1
+      - name: Test stdlib
+        run: pytest --cov=src --cov-report=xml
+
+      - name: Install NumPy
+        run: pip install numpy
+      - name: Test with NumPy
+        run: pytest --cov=src --cov-report=xml --cov-append
+
+      - name: Install full dependencies
+        run: pip install .[full]
+      - name: Test with full dependencies
+        run: pytest --cov=src --cov-report=xml --cov-append
+
+      - name: Upload coverage
+        uses: codecov/codecov-action@v3
diff --git a/setup.cfg b/setup.cfg
index 351b412..930dc22 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -39,6 +39,7 @@ pymap3d = py.typed
 [options.extras_require]
 tests =
   pytest
+  pytest-cov
 lint =
   flake8
   flake8-bugbear
@@ -55,5 +56,6 @@ full =
   numpy >= 1.10.0
   astropy
   xarray
+  pandas
 testproj =
   pyproj