diff --git a/vizro-core/hatch.toml b/vizro-core/hatch.toml
index 10ef7fa46..e24870c6b 100644
--- a/vizro-core/hatch.toml
+++ b/vizro-core/hatch.toml
@@ -36,7 +36,7 @@ features = ["kedro"]
 installer = "uv"
 
 [envs.default.env-vars]
-PYTHONPATH = "tests/e2e/vizro/dashboards/default:tests/tests_utils"
+PYTHONPATH = "tests/e2e/vizro/dashboards/default:tests/tests_utils:tests/e2e/vizro/custom_components"
 
 [envs.default.scripts]
 download-static-files = "python tools/download_static_files.py"
diff --git a/vizro-core/pyproject.toml b/vizro-core/pyproject.toml
index bedb9ae8c..fd4f80fc9 100644
--- a/vizro-core/pyproject.toml
+++ b/vizro-core/pyproject.toml
@@ -93,7 +93,7 @@ markers = [
   "mobile_screenshots: marks tests for chrome mobile screenshots"
 ]
 norecursedirs = ["tests/tests_utils", "tests/js"]
-pythonpath = ["tests/tests_utils", "tests/e2e/vizro/custom_components"]
+pythonpath = ["tests/tests_utils"]
 
 [tool.ruff]
 extend = "../pyproject.toml"