diff --git a/python-websockets.changes b/python-websockets.changes
index d81d9f3..52ee7bc 100644
--- a/python-websockets.changes
+++ b/python-websockets.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Aug 10 07:18:14 UTC 2021 - Matej Cepl <mcepl@suse.com>
+
+- Use %pyunittest macro instead of doing it on our own.
+
 -------------------------------------------------------------------
 Sun Jun  6 12:00:22 UTC 2021 - Dirk Müller <dmueller@suse.com>
 
diff --git a/python-websockets.spec b/python-websockets.spec
index 223bae4..30c42b1 100644
--- a/python-websockets.spec
+++ b/python-websockets.spec
@@ -57,7 +57,7 @@ export CFLAGS="%{optflags}"
 export WEBSOCKETS_TESTS_TIMEOUT_FACTOR=5
 # https://github.com/aaugustin/websockets/issues/855 is an intermittent failure
 # for test_keepalive_ping_does_not_crash_when_connection_lost on s390x
-%python_expand PYTHONPATH=%{buildroot}%{$python_sitearch} $python -m unittest
+%pyunittest_arch -v
 
 %files %{python_files}
 %license LICENSE