diff --git a/pkgs/by-name/li/libbaseencode/package.nix b/pkgs/by-name/li/libbaseencode/package.nix
deleted file mode 100644
index c86a2909a9f4..000000000000
--- a/pkgs/by-name/li/libbaseencode/package.nix
+++ /dev/null
@@ -1,27 +0,0 @@
-{
-  stdenv,
-  lib,
-  fetchFromGitHub,
-  cmake,
-}:
-
-stdenv.mkDerivation rec {
-  pname = "libbaseencode";
-  version = "1.0.15";
-
-  src = fetchFromGitHub {
-    owner = "paolostivanin";
-    repo = "libbaseencode";
-    rev = "v${version}";
-    sha256 = "sha256-WiE+ZMX4oZieER1pu43aSWytkxfkQdX+S3JI98XPpL4=";
-  };
-
-  nativeBuildInputs = [ cmake ];
-
-  meta = {
-    description = "Library written in C for encoding and decoding data using base32 or base64 (RFC-4648)";
-    homepage = "https://github.com/paolostivanin/libbaseencode";
-    license = lib.licenses.asl20;
-    maintainers = with lib.maintainers; [ alexbakker ];
-  };
-}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 5c58d6f04153..5a0a032508a3 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -930,6 +930,7 @@ mapAliases {
   libast = throw "'libast' has been removed due to lack of maintenance upstream."; # Added 2025-06-09
   libayatana-appindicator-gtk3 = throw "'libayatana-appindicator-gtk3' has been renamed to/replaced by 'libayatana-appindicator'"; # Converted to throw 2025-10-27
   libayatana-indicator-gtk3 = throw "'libayatana-indicator-gtk3' has been renamed to/replaced by 'libayatana-indicator'"; # Converted to throw 2025-10-27
+  libbaseencode = throw "'libbaseencode' has been removed because it was deprecated and archived upstream. Consider using 'libcotp' instead"; # Added 2026-01-15
   libbencodetools = throw "'libbencodetools' has been renamed to/replaced by 'bencodetools'"; # Converted to throw 2025-10-27
   libbpf_1 = throw "'libbpf_1' has been renamed to/replaced by 'libbpf'"; # Converted to throw 2025-10-27
   libbson = throw "'libbson' has been renamed to/replaced by 'mongoc'"; # Converted to throw 2025-10-27