diff --git a/doc/release-notes/rl-2511.section.md b/doc/release-notes/rl-2511.section.md
index 3a09d70d93a5..3661269030d2 100644
--- a/doc/release-notes/rl-2511.section.md
+++ b/doc/release-notes/rl-2511.section.md
@@ -80,6 +80,8 @@
 
 - `stdenv.mkDerivation` and other derivation builders that use it no longer allow the value of `env` to be anything but an attribute set, for the purpose of setting environment variables that are available to the [builder](https://nix.dev/manual/nix/latest/store/derivation/#builder) process. An environment variable called `env` can still be provided by means of `mkDerivation { env.env = ...; }`, though we recommend to use a more specific name than "env".
 
+- `purple-matrix` has been removed, since it has been unmaintained since April 2022 and upstream does not recommend using it anymore.
+
 - The default Android NDK version has been raised to 27, and the default SDK version to 35.
   NDK 21–26 have been removed, as they are end‐of‐life.
 
diff --git a/nixos/modules/services/networking/bitlbee.nix b/nixos/modules/services/networking/bitlbee.nix
index 27182bb5cca9..3ba7916dc8d5 100644
--- a/nixos/modules/services/networking/bitlbee.nix
+++ b/nixos/modules/services/networking/bitlbee.nix
@@ -123,7 +123,7 @@ in
       libpurple_plugins = lib.mkOption {
         type = lib.types.listOf lib.types.package;
         default = [ ];
-        example = lib.literalExpression "[ pkgs.purple-matrix ]";
+        example = lib.literalExpression "[ pkgs.purple-discord ]";
         description = ''
           The list of libpurple plugins to install.
         '';
diff --git a/pkgs/applications/networking/instant-messengers/pidgin/pidgin-plugins/default.nix b/pkgs/applications/networking/instant-messengers/pidgin/pidgin-plugins/default.nix
index a2104beae1e3..d3508872cf60 100644
--- a/pkgs/applications/networking/instant-messengers/pidgin/pidgin-plugins/default.nix
+++ b/pkgs/applications/networking/instant-messengers/pidgin/pidgin-plugins/default.nix
@@ -52,8 +52,6 @@ lib.makeScope newScope (
 
     purple-lurch = callPackage ./purple-lurch { };
 
-    purple-matrix = callPackage ./purple-matrix { };
-
     purple-mm-sms = callPackage ./purple-mm-sms { };
 
     purple-plugin-pack = callPackage ./purple-plugin-pack { };
@@ -69,5 +67,9 @@ lib.makeScope newScope (
     pidgin-opensteamworks = callPackage ./pidgin-opensteamworks { };
 
     purple-facebook = callPackage ./purple-facebook { };
+
+  }
+  // lib.optionalAttrs config.allowAliases {
+    purple-matrix = throw "'pidginPackages.purple-matrix' has been unmaintained since April 2022, so it was removed.";
   }
 )
diff --git a/pkgs/applications/networking/instant-messengers/pidgin/pidgin-plugins/purple-matrix/default.nix b/pkgs/applications/networking/instant-messengers/pidgin/pidgin-plugins/purple-matrix/default.nix
deleted file mode 100644
index 1bb3a3943092..000000000000
--- a/pkgs/applications/networking/instant-messengers/pidgin/pidgin-plugins/purple-matrix/default.nix
+++ /dev/null
@@ -1,59 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchFromGitHub,
-  pkg-config,
-  pidgin,
-  json-glib,
-  glib,
-  http-parser,
-  sqlite,
-  olm,
-  libgcrypt,
-}:
-
-stdenv.mkDerivation {
-  pname = "purple-matrix-unstable";
-  version = "2019-06-06";
-
-  src = fetchFromGitHub {
-    owner = "matrix-org";
-    repo = "purple-matrix";
-    rev = "4494ba22b479917f0b1f96a3019792d3d75bcff1";
-    sha256 = "1gjm0z4wa5vi9x1xk43rany5pffrwg958n180ahdj9a7sa8a4hpm";
-  };
-
-  env.NIX_CFLAGS_COMPILE = builtins.toString [
-    # glib-2.62 deprecations
-    "-DGLIB_DISABLE_DEPRECATION_WARNINGS"
-    # override "-O0 -Werror" set by build system
-    "-O3"
-    "-Wno-error"
-  ];
-
-  nativeBuildInputs = [ pkg-config ];
-  buildInputs = [
-    pidgin
-    json-glib
-    glib
-    http-parser
-    sqlite
-    olm
-    libgcrypt
-  ];
-
-  makeFlags = [
-    "PLUGIN_DIR_PURPLE=${placeholder "out"}/lib/purple-2"
-    "DATA_ROOT_DIR_PURPLE=${placeholder "out"}/share"
-  ];
-
-  buildFlags = [ "CC=${stdenv.cc.targetPrefix}cc" ]; # fix build on darwin
-
-  meta = with lib; {
-    homepage = "https://github.com/matrix-org/purple-matrix";
-    description = "Matrix support for Pidgin / libpurple";
-    license = licenses.gpl2;
-    platforms = platforms.unix;
-    maintainers = with maintainers; [ symphorien ];
-  };
-}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 78a8c4b385be..29be34d5136a 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -2047,6 +2047,7 @@ mapAliases {
   psstop = throw "'psstop' has been removed because the upstream repo has been archived"; # Added 2025-05-10
   ptask = throw "'ptask' has been removed because its upstream is unavailable"; # Added 2025-05-10
   purple-signald = throw "'purple-signald' has been removed due to lack of upstream maintenance"; # Added 2025-05-17
+  purple-matrix = throw "'purple-matrix' has been unmaintained since April 2022, so it was removed."; # Added 2025-09-01
   pwndbg = throw "'pwndbg' has been removed due to dependency version incompatibilities that are infeasible to maintain in nixpkgs. Use the downstream flake that pwndbg provides instead: https://github.com/pwndbg/pwndbg"; # Added 2025-02-09
   pxlib = throw "pxlib has been removed due to failing to build and lack of upstream maintenance"; # Added 2025-04-28
   pxview = throw "pxview has been removed due to failing to build and lack of upstream maintenance"; # Added 2025-04-28
@@ -2708,7 +2709,6 @@ mapAliases {
     purple-googlechat
     purple-hangouts
     purple-lurch
-    purple-matrix
     purple-mm-sms
     purple-plugin-pack
     purple-slack