diff --git a/gnu/packages/audio.scm b/gnu/packages/audio.scm
index 6917991255..d30d561d2f 100644
--- a/gnu/packages/audio.scm
+++ b/gnu/packages/audio.scm
@@ -1135,6 +1135,8 @@ (define %configure (assoc-ref %standard-phases 'configure))
            sqlite
            twolame
            vamp
+           libebml
+           libmatroska
            libvorbis
            lv2
            lilv ;for lv2