diff --git a/macros.pyproject b/macros.pyproject
index 51cc8dd..51326ab 100644
--- a/macros.pyproject
+++ b/macros.pyproject
@@ -88,7 +88,7 @@ fi
 # setuptools assumes no pre-existing dist-info
 rm -rfv *.dist-info/ >&2
 if [ -f %{__python3} ]; then
-  RPM_TOXENV="%{toxenv}" HOSTNAME="rpmbuild" %{__python3} -I %{_rpmconfigdir}/redhat/pyproject_buildrequires.py $extras_flag --python3_pkgversion %{python3_pkgversion} %{?**}
+  RPM_TOXENV="%{toxenv}" HOSTNAME="rpmbuild" %{__python3} -s %{_rpmconfigdir}/redhat/pyproject_buildrequires.py $extras_flag --python3_pkgversion %{python3_pkgversion} %{?**}
 fi
 }
 
diff --git a/pyproject-rpm-macros.spec b/pyproject-rpm-macros.spec
index 6cdac93..9c7c8d7 100644
--- a/pyproject-rpm-macros.spec
+++ b/pyproject-rpm-macros.spec
@@ -6,7 +6,7 @@ License:        MIT
 
 # Keep the version at zero and increment only release
 Version:        0
-Release:        26%{?dist}
+Release:        27%{?dist}
 
 # Macro files
 Source001:      macros.pyproject
@@ -88,6 +88,9 @@ export HOSTNAME="rpmbuild"  # to speedup tox in network-less mock, see rhbz#1856
 %license LICENSE
 
 %changelog
+* Fri Sep 4 2020 Miro Hrončok <miro@hroncok.cz> - 0-27
+- Make code in $PWD importable from %%pyproject_buildrequires
+
 * Mon Aug 24 2020 Tomas Hrnciar <thrnciar@redhat.com> - 0-26
 - Implement automatic detection of %%lang files in %%pyproject_save_files
   and mark them with %%lang in filelist