diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index 8d718c1..0d7001d 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -29,4 +29,9 @@ jobs:
         run:  |
           source ./environment.sh
           source venv/bin/activate
-          make test
\ No newline at end of file
+          make test
+
+      - name: Upload results to Codecov
+        uses: codecov/codecov-action@v4
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
\ No newline at end of file
diff --git a/Makefile b/Makefile
index d8b63bc..9410d21 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 .PHONY: test format clean serve_docs
 test:
-	python3 -m pytest
+	python3 -m pytest --cov
 
 format:
 	python3 -m black .
diff --git a/pyproject.toml b/pyproject.toml
index ff08756..4cd3e02 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,7 +19,8 @@ requires-python = ">=3.8"
 [project.optional-dependencies]
 dev = [
   "pytest",
-  "black",
+  "pytest-cov",
+  "ruff",
   "mkdocs-material",
   "amaranth_boards@git+https://github.com/amaranth-lang/amaranth-boards"
 ]