diff --git a/pkgs/learningml-desktop.nix b/pkgs/learningml-desktop.nix
index 88b7799..d0f8bc0 100644
--- a/pkgs/learningml-desktop.nix
+++ b/pkgs/learningml-desktop.nix
@@ -31,6 +31,7 @@ stdenv.mkDerivation (finalAttrs: {
     expat
     fontconfig
     freetype
+    ffmpeg
     gdk-pixbuf
     glib
     glib-networking