diff --git a/tox.ini b/tox.ini
index 4eddc0e9d..0bd085975 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,16 +8,19 @@
 skipsdist = true
 envlist = py27,cover,lint
 
+# nosetest -v => more verbose output, allows to detect busy waiting
+# loops, especially on Travis
+
 [testenv]
 commands =
     pip install -e acme[testing]
-    nosetests acme
+    nosetests -v acme
     pip install -r requirements.txt -e .[testing]
-    nosetests letsencrypt
+    nosetests -v letsencrypt
     pip install letsencrypt-apache
-    nosetests letsencrypt_apache
+    nosetests -v letsencrypt_apache
     pip install letsencrypt-nginx
-    nosetests letsencrypt_nginx
+    nosetests -v letsencrypt_nginx
 
 setenv =
     PYTHONPATH = {toxinidir}
@@ -27,12 +30,12 @@ setenv =
 [testenv:py33]
 commands =
     pip install -e acme[testing]
-    nosetests acme
+    nosetests -v acme
 
 [testenv:py34]
 commands =
     pip install -e acme[testing]
-    nosetests acme
+    nosetests -v acme
 
 [testenv:cover]
 basepython = python2.7