diff --git a/.github/build-wheels.sh b/.github/build-wheels.sh
index 583fa23..a64c189 100755
--- a/.github/build-wheels.sh
+++ b/.github/build-wheels.sh
@@ -52,10 +52,12 @@ echo "dist directory:"
 ls /io/dist
 
 for PYTHON in ${PYTHON_VERSIONS}; do
+    # clear python cache
+    find /io -type d -name __pycache__ -delete
+
     echo
     echo -n "Test $PYTHON: "
     /opt/python/${PYTHON}/bin/python -c "import platform; print('Building wheel for {platform} platform.'.format(platform=platform.platform()))"
     /opt/python/${PYTHON}/bin/pip install "$package_name"[testing,webassets] -f file:///io/dist
-    find /io/tests -name __pycache__ | xargs rm -rf
     /opt/python/${PYTHON}/bin/nosetests -v --with-coverage --cover-package="$package_name" --cover-erase /io/tests
 done