diff --git a/.gitattributes b/.gitattributes
index 30ebb98eb..545288622 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -4,3 +4,13 @@ src/static/typeahead/* linguist-vendored
 src/static/moment/* linguist-vendored
 src/static/datetimepicker/* linguist-vendored
 src/static/charts/* linguist-vendored
+
+# Denote all files that are truly binary and should not be modified.
+*.eot binary
+*.otf binary
+*.ttf binary
+*.woff binary
+*.zip binary
+*.png binary
+*.gif binary
+*.jpg binary