diff --git a/Additional-Learning-Resources.md b/Additional-Learning-Resources.md
index 5f04d30..31b55e7 100644
--- a/Additional-Learning-Resources.md
+++ b/Additional-Learning-Resources.md
@@ -40,4 +40,4 @@ Presentations:
 
 Open source projects:
 + http://poppler.freedesktop.org/
-
++ http://www.mupdf.com/