diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index f5db307c5b17..ae0e393582f2 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -2093,6 +2093,7 @@ mapAliases {
   protobuf_24 = throw "'protobuf_24' has been removed from nixpkgs. Consider using a more recent version of the protobuf library"; # Added 2025-07-14
   protobuf_26 = throw "'protobuf_26' has been removed from nixpkgs. Consider using a more recent version of the protobuf library"; # Added 2025-06-29
   protobuf_28 = throw "'protobuf_28' has been removed from nixpkgs. Consider using a more recent version of the protobuf library"; # Added 2025-06-14
+  protoc-gen-twirp_swagger = throw "'protoc-gen-twirp_swagger' has been removed as it was replaced upstream."; # Added 2026-09-04
   proton-caller = throw "'proton-caller' has been removed from nixpkgs due to being unmaintained and lack of upstream maintenance."; # Added 2025-09-25
   proton-vpn-local-agent = throw "'proton-vpn-local-agent' has been renamed to 'python3Packages.proton-vpn-local-agent'"; # Converted to throw 2025-10-26
   protonup = throw "'protonup' has been renamed to/replaced by 'protonup-ng'"; # Converted to throw 2025-10-27