diff --git a/.gitattributes b/.gitattributes
index c5b9d859dcf..dae59aa844a 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,6 +1,7 @@
 *.[ch] whitespace=tab-in-indent,trailing-space
 *.gpg  binary generated
 *.bmp  binary
+*.base64 generated
 
 # Mark files as "generated", i.e. no license applies to them.
 # This includes output from programs, directive lists generated by grepping