diff --git a/test/pdfs/artofwar.pdf.link b/test/pdfs/artofwar.pdf.link
index f70b9e235..addb61b61 100644
--- a/test/pdfs/artofwar.pdf.link
+++ b/test/pdfs/artofwar.pdf.link
@@ -1 +1 @@
-http://www.puppetpress.com/classics/ArtofWarbySunTzu.pdf
+http://web.archive.org/web/20150907020857/http://www.puppetpress.com/classics/ArtofWarbySunTzu.pdf
diff --git a/test/pdfs/bpl13210.pdf.link b/test/pdfs/bpl13210.pdf.link
index 7cde56a22..15338f22f 100644
--- a/test/pdfs/bpl13210.pdf.link
+++ b/test/pdfs/bpl13210.pdf.link
@@ -1 +1 @@
-http://h20000.www2.hp.com/bc/docs/support/SupportManual/bpl13210/bpl13210.pdf
+http://web.archive.org/web/20120204112920/http://h20000.www2.hp.com/bc/docs/support/SupportManual/bpl13210/bpl13210.pdf
diff --git a/test/pdfs/bug766138.pdf.link b/test/pdfs/bug766138.pdf.link
index 68402dbde..d4ad72eb5 100644
--- a/test/pdfs/bug766138.pdf.link
+++ b/test/pdfs/bug766138.pdf.link
@@ -1 +1 @@
-http://www.minneapolismn.gov/www/groups/public/@clerk/documents/webcontent/wcms1p-094235.pdf
+http://web.archive.org/web/20150922024138/http://www.minneapolismn.gov/www/groups/public/@clerk/documents/webcontent/wcms1p-094235.pdf
diff --git a/test/pdfs/bug808084.pdf.link b/test/pdfs/bug808084.pdf.link
index 9bbbb2e2d..fabe4fa19 100644
--- a/test/pdfs/bug808084.pdf.link
+++ b/test/pdfs/bug808084.pdf.link
@@ -1,2 +1 @@
-http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1984.pdf
-
+http://web.archive.org/web/20130711020819/http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2006/n1984.pdf
diff --git a/test/pdfs/bug887152.pdf.link b/test/pdfs/bug887152.pdf.link
index 241b4ff52..987425c9b 100644
--- a/test/pdfs/bug887152.pdf.link
+++ b/test/pdfs/bug887152.pdf.link
@@ -1 +1 @@
-http://www.nature.com/news/2010/100721/pdf/466432a.pdf
+http://web.archive.org/web/20140925155348/http://www.nature.com/news/2010/100721/pdf/466432a.pdf