diff --git a/tests/diff/urls b/tests/diff/urls
index 00c0daf..cba3b6c 100644
--- a/tests/diff/urls
+++ b/tests/diff/urls
@@ -14,3 +14,7 @@ http://www.pnas.org/content/102/26/9099.full.pdf
 http://iopscience.iop.org/1126-6708/2004/06/043/pdf/1126-6708_2004_06_043.pdf
 http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=JMAPAQ000042000007002896000001&idtype=cvips&doi=10.1063/1.1372177&prog=normal
 http://msp.org/gt/2009/13-03/gt-2009-13-033s.pdf
+http://msp.org/apde/2012/5-2/apde-v5-n2-p07-s.pdf
+http://www.ems-ph.org/journals/show_pdf.php?issn=1661-7207&vol=5&iss=2&rank=6
+http://www.ems-ph.org/journals/show_pdf.php?issn=0010-2571&vol=88&iss=1&rank=3
+http://prd.aps.org/pdf/PRD/v13/i12/p3491_1
diff --git a/tests/diff/urls.denied b/tests/diff/urls.denied
deleted file mode 100644
index 1fd8994..0000000
--- a/tests/diff/urls.denied
+++ /dev/null
@@ -1,4 +0,0 @@
-http://msp.org/apde/2012/5-2/apde-v5-n2-p07-s.pdf
-http://www.ems-ph.org/journals/show_pdf.php?issn=1661-7207&vol=5&iss=2&rank=6
-http://www.ems-ph.org/journals/show_pdf.php?issn=0010-2571&vol=88&iss=1&rank=3
-http://prd.aps.org/pdf/PRD/v13/i12/p3491_1