diff --git a/api-openbis-python3-pybis/src/python/tests/jenkinstest/test.py b/api-openbis-python3-pybis/src/python/tests/jenkinstest/test.py
index 26e3904b7aa3a207205884a155caacd0c9eedbf6..16eebb96c49457d445ea1b8fa8232482560d7513 100644
--- a/api-openbis-python3-pybis/src/python/tests/jenkinstest/test.py
+++ b/api-openbis-python3-pybis/src/python/tests/jenkinstest/test.py
@@ -27,7 +27,7 @@ class TestCase(testcase.TestCase):
         self.openbisController = self.createOpenbisController()
         self.openbisController.allUp()
         # run tests
-        util.executeCommand(['pytest', '--junitxml=test_results_pybis.xml',
+        util.executeCommand(['pytest', '-s', '--junitxml=test_results_pybis.xml',
                              'api-openbis-python3-pybis/src/python/tests'])