diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5641018..f07e6a8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,10 +15,13 @@ jobs:
     - uses: actions/checkout@v4
 
     - name: Set up CMake
-      run: sudo apt-get install cmake
+      run: sudo apt-get install cmake lcov
 
     - name: Configure with CMake
-      run: cmake -S . -B build -DCMAKE_BUILD_TYPE=Release
+      run: |
+        cmake -S . -B build -DCMAKE_BUILD_TYPE=Debug \
+              -DCMAKE_C_FLAGS="--coverage" -DCMAKE_CXX_FLAGS="--coverage" \
+              -DCMAKE_EXE_LINKER_FLAGS="--coverage"
 
     - name: Build
       run: cmake --build build
@@ -26,5 +29,21 @@ jobs:
     - name: Run Tests
       run: ctest --test-dir build
 
+    - name: Capture Coverage Info
+      run: |
+        cd build
+        lcov --capture --directory . --output-file coverage.info
+        lcov --remove coverage.info '/usr/*' --output-file coverage.info  # Remove coverage for system files
+        lcov --list coverage.info  # Optional: Display coverage info
+
+    - name: Upload Coverage to Codecov
+      uses: codecov/codecov-action@v4
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }}
+        files: build/coverage.info
+        flags: unittests
+        name: codecov-umbrella
+        fail_ci_if_error: true
+