diff --git a/pkgs/development/tools/misc/autoconf/2.13.nix b/pkgs/development/tools/misc/autoconf/2.13.nix
deleted file mode 100644
index e829c1cd9684..000000000000
--- a/pkgs/development/tools/misc/autoconf/2.13.nix
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchurl,
-  m4,
-  perl,
-}:
-
-stdenv.mkDerivation rec {
-  pname = "autoconf";
-  version = "2.13";
-
-  src = fetchurl {
-    url = "mirror://gnu/autoconf/autoconf-${version}.tar.gz";
-    sha256 = "07krzl4czczdsgzrrw9fiqx35xcf32naf751khg821g5pqv12qgh";
-  };
-
-  nativeBuildInputs = [
-    m4
-    perl
-  ];
-  strictDeps = true;
-
-  doCheck = true;
-
-  # Don't fixup "#! /bin/sh" in Autoconf, otherwise it will use the
-  # "fixed" path in generated files!
-  dontPatchShebangs = true;
-
-  postInstall = ''ln -s autoconf "$out"/bin/autoconf-2.13'';
-
-  meta = {
-    homepage = "https://www.gnu.org/software/autoconf/";
-    description = "Part of the GNU Build System";
-    branch = "2.13";
-
-    longDescription = ''
-      GNU Autoconf is an extensible package of M4 macros that produce
-      shell scripts to automatically configure software source code
-      packages.  These scripts can adapt the packages to many kinds of
-      UNIX-like systems without manual user intervention.  Autoconf
-      creates a configuration script for a package from a template
-      file that lists the operating system features that the package
-      can use, in the form of M4 macro calls.
-    '';
-
-    license = lib.licenses.gpl2Plus;
-    platforms = lib.platforms.unix;
-  };
-}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 88d47f36e789..9a2abad3488c 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -315,6 +315,7 @@ mapAliases {
   ats = throw "'ats' has been removed as it is unmaintained for 10 years and broken"; # Added 2025-05-17
   audaciousQt5 = throw "'audaciousQt5' has been removed, since audacious is built with Qt 6 now"; # Added 2024-07-06
   auditBlasHook = throw "'auditBlasHook' has been removed since it never worked"; # Added 2024-04-02
+  autoconf213 = throw "'autoconf213' has been removed in favor of 'autoconf'"; # Added 2025-07-21
   automake111x = throw "'automake111x' has been removed in favor of 'automake'"; # Added 2025-07-21
   autoReconfHook = throw "You meant 'autoreconfHook', with a lowercase 'r'."; # preserve
   autoreconfHook264 = throw "'autoreconfHook264' has been removed in favor of 'autoreconfHook'"; # Added 2025-07-21
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 5b645412d676..56c7ac90f61a 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -6861,7 +6861,6 @@ with pkgs;
   electron-chromedriver = electron-chromedriver_35;
 
   autoconf = callPackage ../development/tools/misc/autoconf { };
-  autoconf213 = callPackage ../development/tools/misc/autoconf/2.13.nix { };
   autoconf264 = callPackage ../development/tools/misc/autoconf/2.64.nix { };
   autoconf269 = callPackage ../development/tools/misc/autoconf/2.69.nix { };
   autoconf271 = callPackage ../development/tools/misc/autoconf/2.71.nix { };