diff --git a/.gitattributes b/.gitattributes
index fcadb2cf9..1de36465d 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1 +1,5 @@
 * text eol=lf
+
+# Denote all files that are truly binary and should not be modified.
+*.png binary
+*.jpg binary