diff --git a/.testr.conf b/.testr.conf
index 8aa2cd002..339bf3e72 100644
--- a/.testr.conf
+++ b/.testr.conf
@@ -2,6 +2,7 @@
 test_command=OS_STDOUT_CAPTURE=${OS_STDOUT_CAPTURE:-1} \
              OS_STDERR_CAPTURE=${OS_STDERR_CAPTURE:-1} \
              OS_TEST_TIMEOUT=${OS_TEST_TIMEOUT:-160} \
+             OS_DEBUG=${OS_DEBUG:-TRACE} \
              ${PYTHON:-python} -m subunit.run discover -t ./ ./taskflow/tests $LISTOPT $IDOPTION
 
 test_id_option=--load-list $IDFILE