diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 9661a24a7225..17682f14430c 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -227,6 +227,7 @@ mapAliases {
   cawbird = throw "cawbird has been abandoned upstream and is broken anyways due to Twitter closing its API";
   ccloud-cli = throw "ccloud-cli has been removed, please use confluent-cli instead"; # Added 2023-06-09
   certmgr-selfsigned = certmgr; # Added 2023-11-30
+  challenger = taler-challenger; # Added 2024-09-04
   chefdk = throw "chefdk has been removed due to being deprecated upstream by Chef Workstation"; # Added 2023-03-22
   chia = throw "chia has been removed. see https://github.com/NixOS/nixpkgs/pull/270254"; # Added 2023-11-30
   chia-dev-tools = throw "chia-dev-tools has been removed. see https://github.com/NixOS/nixpkgs/pull/270254"; # Added 2023-11-30
@@ -1516,6 +1517,7 @@ mapAliases {
   swtpm-tpm2 = swtpm; # Added 2021-02-26
   Sylk = sylk; # Added 2024-06-12
   symbiyosys = sby; # Added 2024-08-18
+  sync = taler-sync; # Added 2024-09-04
   syncthing-cli = syncthing; # Added 2021-04-06
   syncthingtray-qt6 = syncthingtray; # Added 2024-03-06