diff --git a/tox.ini b/tox.ini
index 47d2dfb..7928cad 100644
--- a/tox.ini
+++ b/tox.ini
@@ -9,6 +9,7 @@ install_command = pip install -U {opts} {packages}
 setenv =
    VIRTUAL_ENV={envdir}
    OS_DEBUG=1
+   OS_LOG_CAPTURE=1
 deps = -r{toxinidir}/test-requirements.txt
 commands = python setup.py testr --slowest --testr-args='{posargs}'