diff --git a/modules/programs.nix b/modules/programs.nix
index 8dabf97..9689f5d 100644
--- a/modules/programs.nix
+++ b/modules/programs.nix
@@ -97,6 +97,8 @@
   #   flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
   #   flatpak update
   #
+  #   # Change PDF metadata
+  #   flatpak install io.github.diegoivan.pdf_metadata_editor
   #   # Trim, flip, rotate, crop and export individual clips.
   #   flatpak install io.gitlab.adhami3310.Footage
   #   # Fediverse client. There is also a native client, but it is outdated: https://github.com/GeopJr/Tuba#third-party