diff --git a/conf/Makefile.extra-dist b/conf/Makefile.extra-dist
index 936d3bef6..6b276b187 100644
--- a/conf/Makefile.extra-dist
+++ b/conf/Makefile.extra-dist
@@ -183,6 +183,8 @@ EXTRA_DIST += tests/file_filter/file.lzop
 EXTRA_DIST += tests/file_filter/file.lzop.sig
 EXTRA_DIST += tests/file_filter/file.xz
 EXTRA_DIST += tests/file_filter/file.xz.sig
+EXTRA_DIST += tests/file_filter/file.zstd
+EXTRA_DIST += tests/file_filter/file.zstd.sig
 EXTRA_DIST += tests/file_filter/keys
 EXTRA_DIST += tests/file_filter/keys.pub
 EXTRA_DIST += tests/file_filter/test.cfg