diff --git a/pkgs/tools/security/gnupg/1.nix b/pkgs/tools/security/gnupg/1.nix
deleted file mode 100644
index 6cdbc419e074..000000000000
--- a/pkgs/tools/security/gnupg/1.nix
+++ /dev/null
@@ -1,49 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchurl,
-  readline,
-  bzip2,
-}:
-
-stdenv.mkDerivation rec {
-  pname = "gnupg";
-  version = "1.4.23";
-
-  src = fetchurl {
-    url = "mirror://gnupg/gnupg/gnupg-${version}.tar.bz2";
-    sha256 = "1fkq4sqldvf6a25mm2qz95swv1qjg464736091w51djiwqbjyin9";
-  };
-
-  buildInputs = [
-    readline
-    bzip2
-  ];
-
-  # Workaround build failure on -fno-common toolchains like upstream
-  # gcc-10. Otherwise build fails as:
-  #   ld: ../util/libutil.a(estream-printf.o):/build/gnupg-1.4.23/util/../include/memory.h:100: multiple definition of
-  #     `memory_debug_mode'; gpgsplit.o:/build/gnupg-1.4.23/tools/../include/memory.h:100: first defined here
-  env.NIX_CFLAGS_COMPILE = "-fcommon";
-
-  doCheck = true;
-
-  meta = with lib; {
-    homepage = "https://gnupg.org";
-    description = "Classic (1.4) release of the GNU Privacy Guard, a GPL OpenPGP implementation";
-    license = licenses.gpl3Plus;
-    longDescription = ''
-      The GNU Privacy Guard is the GNU project's complete and free
-      implementation of the OpenPGP standard as defined by RFC4880.  GnuPG
-      "classic" (1.4) is the old standalone version which is most suitable for
-      older or embedded platforms.  GnuPG allows to encrypt and sign your data
-      and communication, features a versatile key management system as well as
-      access modules for all kind of public key directories.  GnuPG, also known
-      as GPG, is a command line tool with features for easy integration with
-      other applications.  A wealth of frontend applications and libraries are
-      available.
-    '';
-    platforms = platforms.all;
-    mainProgram = "gpg";
-  };
-}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 453805988349..26d96c09662b 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -457,6 +457,7 @@ mapAliases {
   gmtp = throw "'gmtp' has been removed due to lack of maintenance upstream. Consider using 'gnome-music' instead"; # Added 2024-09-14
   gnome-latex = throw "'gnome-latex' has been superseded by 'enter-tex'"; # Added 2024-09-18
   gnu-cobol = gnucobol; # Added 2024-09-17
+  gnupg1orig = throw "'gnupg1orig' has been removed due to lack of active upstream maintainance. Consider using 'gnupg' instead"; # Added 2025-01-11
   gnupg22 = throw "'gnupg22' is end-of-life. Consider using 'gnupg24' instead"; # Added 2025-01-05
   gogs = throw ''
     Gogs development has stalled. Also, it has several unpatched, critical vulnerabilities that
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index fc440af6fd66..4a1b7e64f45d 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3462,7 +3462,6 @@ with pkgs;
 
   gnupatch = callPackage ../tools/text/gnupatch { };
 
-  gnupg1orig = callPackage ../tools/security/gnupg/1.nix { };
   gnupg1compat = callPackage ../tools/security/gnupg/1compat.nix { };
   gnupg1 = gnupg1compat;    # use config.packageOverrides if you prefer original gnupg1
 
diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index 6796f495eaf1..7162c0d4a942 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -10984,22 +10984,6 @@ with self; {
     };
   };
 
-  GnuPG = buildPerlPackage {
-    pname = "GnuPG";
-    version = "0.19";
-    src = fetchurl {
-      url = "mirror://cpan/authors/id/Y/YA/YANICK/GnuPG-0.19.tar.gz";
-      hash = "sha256-r1Py0/Yyl+BGZ26uFKdilq/dKRDglyO2sRNwhiK3mJs=";
-    };
-    buildInputs = [ pkgs.gnupg1orig ];
-    doCheck = false;
-    meta = {
-      description = "Perl interface to the GNU Privacy Guard";
-      license = with lib.licenses; [ gpl2Plus ];
-      mainProgram = "gpgmailtunl";
-    };
-  };
-
   GnuPGInterface = buildPerlPackage {
     pname = "GnuPG-Interface";
     version = "1.03";
@@ -29530,4 +29514,5 @@ with self; {
 
   Gtk2GladeXML = throw "Gtk2GladeXML has been removed"; # 2022-01-15
   pcscperl = throw "'pcscperl' has been renamed to 'ChipcardPCSC'"; # Added 2023-12-07
+  GnuPG = throw "'GnuPG' has been removed"; # 2025-01-11
 }