diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e40a99e..cb796b7 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,5 +1,4 @@
 # Config file for automatic testing using github actions
-#
 
 name: Unit_Tests
 
@@ -24,7 +23,10 @@ jobs:
           make format-check
       - name: Run pytests (utests/tests)
         run: | 
-          make test
+          make coverage
+      - name: Check coverage (src/)
+        run: |
+          make coverage-check
   test:
     runs-on: ubuntu-18.04
     steps:
diff --git a/Makefile b/Makefile
index b19ba1b..1468dd0 100644
--- a/Makefile
+++ b/Makefile
@@ -17,3 +17,16 @@ set-dev:
 test:
 	@echo "Running tests..."
 	export PYTHONPATH=${PWD}/src && python -m pytest utests/
+
+.PHONY: coverage
+coverage:
+	@echo "Running tests with coverage..."
+	export PYTHONPATH=${PWD}/src && python -m coverage run --source src/ -m pytest utests/
+
+.PHONY: coverage-check
+coverage-check:
+	@echo "Checking coverage..."
+	python -m coverage report --fail-under=28
+
+.PHONY: coverage-all
+coverage-all: coverage coverage-check
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 79c0cb7..87cc3b2 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -2,3 +2,4 @@
 
 black==22.3.0
 pytest==6.2.5
+coverage==6.2