diff --git a/.gitattributes b/.gitattributes
index 1fcec8c58adb..997bfd4aa186 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -30,3 +30,5 @@
 .gitignore        text eol=lf
 .travis.yml       text eol=lf
 
+# Define some file types explicitly as being binary.
+*.jar             binary