diff --git a/pkgs/desktops/lomiri/services/lomiri-thumbnailer/default.nix b/pkgs/desktops/lomiri/services/lomiri-thumbnailer/default.nix
index b07f8a7c3c79..4fc545bbaf11 100644
--- a/pkgs/desktops/lomiri/services/lomiri-thumbnailer/default.nix
+++ b/pkgs/desktops/lomiri/services/lomiri-thumbnailer/default.nix
@@ -131,6 +131,9 @@ stdenv.mkDerivation (finalAttrs: {
       gst-plugins-base
       gst-plugins-good
       gst-plugins-bad
+      # Something seems borked with bad's h264 decoder, add libav as a workaround
+      # https://github.com/NixOS/nixpkgs/issues/399599#issuecomment-2816268226
+      gst-libav
       # maybe add ugly to cover all kinds of formats?
     ]);