diff --git a/pkgs/by-name/li/libtap/package.nix b/pkgs/by-name/li/libtap/package.nix
deleted file mode 100644
index 4b41187a7c9c..000000000000
--- a/pkgs/by-name/li/libtap/package.nix
+++ /dev/null
@@ -1,38 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchurl,
-  pkg-config,
-  cmake,
-  perl,
-}:
-
-stdenv.mkDerivation rec {
-
-  pname = "libtap";
-  version = "1.14.0";
-
-  src = fetchurl {
-    url = "https://web-cpan.shlomifish.org/downloads/${pname}-${version}.tar.xz";
-    sha256 = "1ga7rqmppa8ady665736cx443icscqlgflkqmxd4xbkzypmdj9bk";
-  };
-
-  nativeBuildInputs = [ pkg-config ];
-  propagatedBuildInputs = [
-    cmake
-    perl
-  ];
-
-  meta = with lib; {
-    description = "Library to implement a test protocol";
-    longDescription = ''
-      libtap is a library to implement the Test Anything Protocol for
-      C originally created by Nik Clayton. This is a maintenance
-      branch by Shlomi Fish.
-    '';
-    homepage = "https://www.shlomifish.org/open-source/projects/libtap/";
-    license = licenses.bsd3;
-    maintainers = [ ];
-    platforms = platforms.unix;
-  };
-}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 5d903ac3ed8b..d99bb9b6eee1 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -1342,6 +1342,7 @@ mapAliases {
   libsmartcols = lib.warnOnInstantiate "'util-linux' should be used instead of 'libsmartcols'" util-linux; # Added 2025-09-03
   libsoup = lib.warnOnInstantiate "'libsoup' has been renamed to 'libsoup_2_4'" libsoup_2_4; # Added 2024-12-02
   libstdcxx5 = throw "libstdcxx5 is severly outdated and has been removed"; # Added 2024-11-24
+  libtap = throw "libtap has been removed, as it was unused and deprecated by its author in favour of cmocka"; # Added 2025-09-16
   libtensorflow-bin = libtensorflow; # Added 2022-09-25
   libtorrent = throw "'libtorrent' has been renamed to 'libtorrent-rakshasa' for clearer distinction from 'libtorrent-rasterbar'"; # Added 2025-09-10
   libtorrentRasterbar = throw "'libtorrentRasterbar' has been renamed to/replaced by 'libtorrent-rasterbar'"; # Converted to throw 2024-10-17