diff --git a/.gitattributes b/.gitattributes
index fcadb2c..ac10488 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1 +1,7 @@
 * text eol=lf
+# Denote all files that are truly binary and should not be modified.
+*.png binary
+*.jpg binary
+*.mp3 binary
+*.icns binary
+*.gif binary