diff --git a/python-google-cloud-core.changes b/python-google-cloud-core.changes
index a53fc15..632ac07 100644
--- a/python-google-cloud-core.changes
+++ b/python-google-cloud-core.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Sep 30 09:03:28 UTC 2021 - Matej Cepl <mcepl@suse.com>
+
+- Add --import-mode=importlib to make test suite work.
+
 -------------------------------------------------------------------
 Tue Aug  3 00:43:52 UTC 2021 - Steve Kowalik <steven.kowalik@suse.com>
 
diff --git a/python-google-cloud-core.spec b/python-google-cloud-core.spec
index 084dba9..7df4230 100644
--- a/python-google-cloud-core.spec
+++ b/python-google-cloud-core.spec
@@ -63,6 +63,7 @@ common helpers (e.g. base ``Client`` classes) used by all of the
 %python_expand %fdupes %{buildroot}%{$python_sitelib}
 
 %check
+export PYTEST_ADDOPTS="--import-mode=importlib"
 %pytest
 
 %files %{python_files}