diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5e50f5c..97c38bd 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -51,6 +51,8 @@ jobs:
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v3
         with:
+          fail_ci_if_error: true
           gcov: true
-          gcov_include: fast_pbkdf2.c
+          gcov_include: c_src/fast_pbkdf2.c
+      # - run: gcov -o c_src fast_pbkdf2
         if: ${{ matrix.otp == '26.1' && matrix.os == 'ubuntu-22.04' }}