diff --git a/.gitattributes b/.gitattributes
index 7d9e3d1ce..b096658f8 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -10,8 +10,8 @@
 *.pdf binary
 
 # ignore files from MSC.Marc in language statistics
-installation/mods_MarcMentat/* linguist-vendored
-src/marc/include/*             linguist-vendored
+installation/mods_MarcMentat/20*/*  linguist-vendored
+src/marc/include/*                  linguist-vendored
 
 # ignore reference files for tests in language statistics
 python/tests/reference/*       linguist-vendored