diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 1da4339..59754dc 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -30,7 +30,9 @@ jobs:
         tox -e mypy
     - name: Test with tox
       run: |
+        coverage erase
         tox
+        coverage combine
         coverage xml
     - uses: codecov/codecov-action@v3
       with:
diff --git a/pyproject.toml b/pyproject.toml
index d172820..f1ad627 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -72,12 +72,19 @@ show_contexts = true
 
 [tool.coverage.run]
 branch = true
-include =[
-    "src/pytest_bdd/*",
-    "tests/*",
-]
+# `parallel` will cause each tox env to put data into a different file, so that we can combine them later
+parallel = true
+source = ["pytest_bdd", "tests"]
 dynamic_context = "test_function"
 
+[tool.coverage.paths]
+# treat these directories as the same when combining
+# the first item is going to be the canonical dir
+source = [
+    "src/pytest_bdd",
+    ".tox/*/lib/python*/site-packages/pytest_bdd",
+]
+
 
 [tool.mypy]
 python_version = "3.7"
diff --git a/tox.ini b/tox.ini
index 9a2d7b4..a5e2532 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,7 +8,7 @@ skip_missing_interpreters = true
 
 [testenv]
 setenv =
-    coverage: _PYTEST_CMD=coverage run --append -m pytest
+    coverage: _PYTEST_CMD=coverage run -m pytest
     xdist: _PYTEST_MORE_ARGS=-n3 -rfsxX
 deps =
     pytestlatest: pytest