diff --git a/pkgs/build-support/appimage/default.nix b/pkgs/build-support/appimage/default.nix
index cdb1ebd4c7b..6db626464fb 100644
--- a/pkgs/build-support/appimage/default.nix
+++ b/pkgs/build-support/appimage/default.nix
@@ -180,6 +180,10 @@ rec {
       keyutils.lib
       libjack2
       fribidi
+
+      # libraries not on the upstream include list, but nevertheless expected
+      # by at least one appimage
+      libtool.lib # for Synfigstudio
     ];
   };
 }