diff --git a/.gitattributes b/.gitattributes
index d6e50a67aa8d..581671af6b7d 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1,6 @@
 * text=auto eol=lf
 tests/* linguist-vendored
+
+# Denote all files that are truly binary and should not be modified.
+*.png binary
+*.jpg binary