diff --git a/.gitattributes b/.gitattributes
index 9530d88a70e..1fda7c1af77 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,5 +1,6 @@
 *.dump binary
 *.SAMBABACKUP binary
+libcli/security/tests/data/conditional_aces.txt.json binary
 testdata/compression/compressed-huffman/** binary
 testdata/compression/compressed-more-huffman/** binary
 testdata/compression/compressed-more-plain/** binary