diff --git a/trunk/PKGBUILD b/trunk/PKGBUILD
index 7df123f3..ffa82fc6 100644
--- a/trunk/PKGBUILD
+++ b/trunk/PKGBUILD
@@ -26,12 +26,13 @@ build() {
 
 check() {
   cd nbconvert-$pkgver
-  export PYTHONPATH="$PWD" # Make sure system nbconvert is not used
+  python -m venv --system-site-packages test-env
+  test-env/bin/python -m pip install -e .
   # disable tests that download chromium and (probably) require a graphical session
-  pytest -v -k 'TestWebPDFExporter and not (test_export or test_webpdf_without_pyppeteer)' -W ignore::DeprecationWarning
-  pytest -v -k 'TestNbConvertApp and not test_webpdf_with_chromium' -W ignore::DeprecationWarning
+  test-env/bin/python -m pytest -v -k 'TestWebPDFExporter and not (test_export or test_webpdf_without_pyppeteer)' -W ignore::DeprecationWarning
+  test-env/bin/python -m pytest -v -k 'TestNbConvertApp and not test_webpdf_with_chromium' -W ignore::DeprecationWarning
   # run all remaining tests
-  pytest -v -k 'not TestWebPDFExporter and not TestNbConvertApp' -W ignore::DeprecationWarning
+  test-env/bin/python -m pytest -v -k 'not TestWebPDFExporter and not TestNbConvertApp' -W ignore::DeprecationWarning
 }
 
 package() {