diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 9485fa4..e0afae6 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -246,7 +246,7 @@ jobs:
         if: env.CODECOV_TOKEN != ''
         uses: codecov/codecov-action@v7
         with:
-          file: ${{ steps.python_layout.outputs.root }}/coverage.xml
+          files: ${{ steps.python_layout.outputs.root }}/coverage.xml
           token: ${{ env.CODECOV_TOKEN }}
           disable_search: true
           fail_ci_if_error: true
diff --git a/changelog.d/20260722_issue_34_codecov_v7_input.md b/changelog.d/20260722_issue_34_codecov_v7_input.md
new file mode 100644
index 0000000..70101a1
--- /dev/null
+++ b/changelog.d/20260722_issue_34_codecov_v7_input.md
@@ -0,0 +1,3 @@
+### Fixed
+
+- Use the Codecov v7 `files` input so the generated coverage report is uploaded.
diff --git a/tests/test_workflows.py b/tests/test_workflows.py
index 122edf2..82d4ae9 100644
--- a/tests/test_workflows.py
+++ b/tests/test_workflows.py
@@ -140,7 +140,8 @@ def test_release_workflow_gates_codecov_upload_on_token() -> None:
     assert "::notice::" in skip_step
     assert "if: env.CODECOV_TOKEN != ''" in upload_step
     assert "uses: codecov/codecov-action@v7" in upload_step
-    assert "file: ${{ steps.python_layout.outputs.root }}/coverage.xml" in upload_step
+    assert "files: ${{ steps.python_layout.outputs.root }}/coverage.xml" in upload_step
+    assert "\n          file:" not in upload_step
     assert "token: ${{ env.CODECOV_TOKEN }}" in upload_step
     assert "disable_search: true" in upload_step
     assert "fail_ci_if_error: true" in upload_step