diff --git a/lib/gollum/sanitization.rb b/lib/gollum/sanitization.rb
index 6632e75b..504b6fbc 100644
--- a/lib/gollum/sanitization.rb
+++ b/lib/gollum/sanitization.rb
@@ -43,7 +43,7 @@ module Gollum
 
     # Default whitelisted protocols for URLs.
     PROTOCOLS = {
-      'a'   => {'href' => ['http', 'https', 'mailto', 'ftp', 'irc', :relative]},
+      'a'   => {'href' => ['http', 'https', 'mailto', 'ftp', 'irc', 'apt', :relative]},
       'img' => {'src'  => ['http', 'https', :relative]}
     }.freeze
 
diff --git a/test/test_markup.rb b/test/test_markup.rb
index 1175201a..5a47a8f7 100644
--- a/test/test_markup.rb
+++ b/test/test_markup.rb
@@ -495,6 +495,13 @@ np.array([[2,2],[1,3]],np.float)
     compare(content, output)
   end
 
+  test "allows apt uri schemes" do
+    content = "[Hack me](apt:gettext)"
+    output = "<p><a href=\"apt:gettext\">Hackme</a></p>"
+    compare(content, output)
+  end
+
+
   test "removes style blocks completely" do
     content = "<style>body { color: red }</style>foobar"
     output = "<p>foobar</p>"