diff --git a/modules/desktop/programs.nix b/modules/desktop/programs.nix
index 8eb68fd..d2759a3 100644
--- a/modules/desktop/programs.nix
+++ b/modules/desktop/programs.nix
@@ -30,6 +30,8 @@
     home.sessionVariables = {
       # The firefox-wayland package works with wayland without any further
       # configuration, but tor-browser doesn't.
+      # TODO: remove when tor browser is based on firefox v121.
+      # https://www.mozilla.org/en-US/firefox/121.0/releasenotes/
       MOZ_ENABLE_WAYLAND = 1;
     };
   };
diff --git a/modules/desktop/ssh.nix b/modules/desktop/ssh.nix
index a0c4239..a02d2f3 100644
--- a/modules/desktop/ssh.nix
+++ b/modules/desktop/ssh.nix
@@ -18,6 +18,8 @@
           port = 2222;
         };
       };
+      # TODO: use addKeysToAgent attribute in Home Manager 24.04 instead of
+      # extraConfig.
       extraConfig = ''
         # Add ssh keys to the agent the first time we unlock them so we don't
         # have to type the password all the time.