diff --git a/.github/workflows/build_test.yml b/.github/workflows/build_test.yml
index d792cd9..cd25bc8 100644
--- a/.github/workflows/build_test.yml
+++ b/.github/workflows/build_test.yml
@@ -18,6 +18,8 @@ jobs:
     - uses: actions/checkout@v3
     - name: Install prerequisites
       run: sudo apt-get -y install libsdl2-dev
+    - name: Install cargo-llvm-cov
+      uses: taiki-e/install-action@cargo-llvm-cov
     - name: Fetch submodules
       run: git submodule update --init --recursive
     - name: Checkout souper_tests
@@ -30,3 +32,12 @@ jobs:
       run: cargo build --verbose --release
     - name: Run tests
       run: cargo test --verbose
+    - name: Generate code coverage
+      run: cargo llvm-cov --all-features --workspace --codecov --output-path codecov.json
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@v3
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }}
+        files: codecov.json
+        fail_ci_if_error: true
+