diff --git a/.gitattributes b/.gitattributes
index 70a9d752e8..4552b845e9 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1 +1,6 @@
-*    text eol=lf
\ No newline at end of file
+*    text eol=lf
+
+# Denote all files that are truly binary and should not be modified.
+*.png binary
+*.jpg binary
+*.gif binary