diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 8009208739a..46c7ab7c496 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -44,6 +44,7 @@ mapAliases ({
   aleth = throw "aleth (previously packaged as cpp_ethereum) has been removed; abandoned upstream."; # added 2020-11-30
   amazon-glacier-cmd-interface = throw "amazon-glacier-cmd-interface has been removed due to it being unmaintained."; # added 2020-10-30
   ammonite-repl = ammonite; # added 2017-05-02
+  amsn = throw "amsn has been removed due to being unmaintained."; # added 2020-12-09
   antimicro = throw "antimicro has been removed as it was broken, see antimicroX instead."; # added 2020-08-06
   arduino_core = arduino-core;  # added 2015-02-04
   arora = throw "arora has been removed."; # added 2020-09-09