diff --git a/.gitattributes b/.gitattributes
index dd5bc9c51c07b6dbaeb7209196c74ea9a136761b..c0eb111f6381814de717edf4733681cc05d3ec5a 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -4,3 +4,4 @@
 *.pk3 filter=lfs diff=lfs merge=lfs -text
 *.md3 filter=lfs diff=lfs merge=lfs -text
 *.png filter=lfs diff=lfs merge=lfs -text
+*.mm3d filter=lfs diff=lfs merge=lfs -text