diff --git a/.github/workflows/test-python-poetry-task.yml b/.github/workflows/test-python-poetry-task.yml
index 9fddf15..d0a717f 100644
--- a/.github/workflows/test-python-poetry-task.yml
+++ b/.github/workflows/test-python-poetry-task.yml
@@ -16,6 +16,7 @@ on:
       - "pyproject.toml"
       - "compilesketches/tests/**"
       - "**.py"
+      - "**/pytest.ini"
   pull_request:
     paths:
       - ".github/workflows/test-python-poetry-task.ya?ml"
@@ -28,6 +29,7 @@ on:
       - "pyproject.toml"
       - "compilesketches/tests/**"
       - "**.py"
+      - "**/pytest.ini"
   schedule:
     # Run periodically to catch breakage caused by external changes.
     - cron: "0 12 * * WED"
diff --git a/Taskfile.yml b/Taskfile.yml
index 3ee780b..d6ac18b 100644
--- a/Taskfile.yml
+++ b/Taskfile.yml
@@ -434,7 +434,6 @@ tasks:
           POETRY_GROUPS: dev,main
     cmds:
       - |
-        export PYTHONPATH="${PWD}/{{.PYTHON_PROJECT_PATH}}"
         poetry run \
           coverage run \
             --source="{{.PYTHON_PROJECT_PATH}}" \
diff --git a/pytest.ini b/pytest.ini
index b8beed3..202c1cf 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -8,3 +8,4 @@ filterwarnings =
 # --capture=no - disable per-test capture
 # --tb=long sets the length of the traceback in case of failures
 addopts = --capture=no --tb=long --verbose
+pythonpath = compilesketches