diff --git a/.gitattributes b/.gitattributes
index 1ac5e3f..8881761 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1,3 @@
-$ cat .gitattributes
-*.rb linguist-language=MATLAB
+*.slx linguist-language=MATLAB
+*.mat linguist-language=MATLAB
+*.2013b linguist-language=MATLAB