diff --git a/nixos/doc/manual/release-notes/rl-1909.xml b/nixos/doc/manual/release-notes/rl-1909.xml
index d862981c8f3d..9c023b85064e 100644
--- a/nixos/doc/manual/release-notes/rl-1909.xml
+++ b/nixos/doc/manual/release-notes/rl-1909.xml
@@ -268,6 +268,11 @@
        The <option>services.systemhealth</option> module has been removed from nixpkgs due to lack of maintainer.
      </para>
    </listitem>
+   <listitem>
+     <para>
+       The <option>services.mantisbt</option> module has been removed from nixpkgs due to lack of maintainer.
+     </para>
+   </listitem>
   </itemizedlist>
  </section>
 
diff --git a/nixos/modules/module-list.nix b/nixos/modules/module-list.nix
index f0122f1c886c..7930770aad47 100644
--- a/nixos/modules/module-list.nix
+++ b/nixos/modules/module-list.nix
@@ -435,7 +435,6 @@
   ./services/misc/logkeys.nix
   ./services/misc/leaps.nix
   ./services/misc/lidarr.nix
-  ./services/misc/mantisbt.nix
   ./services/misc/mathics.nix
   ./services/misc/matrix-synapse.nix
   ./services/misc/mbpfan.nix
diff --git a/nixos/modules/services/misc/mantisbt.nix b/nixos/modules/services/misc/mantisbt.nix
deleted file mode 100644
index 7e3474feb672..000000000000
--- a/nixos/modules/services/misc/mantisbt.nix
+++ /dev/null
@@ -1,68 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-let
-  cfg = config.services.mantisbt;
-
-  freshInstall = cfg.extraConfig == "";
-
-  # combined code+config directory
-  mantisbt = let
-    config_inc = pkgs.writeText "config_inc.php" ("<?php\n" + cfg.extraConfig);
-    src = pkgs.fetchurl {
-      url = "mirror://sourceforge/mantisbt/${name}.tar.gz";
-      sha256 = "1pl6xn793p3mxc6ibpr2bhg85vkdlcf57yk7pfc399g47l8x4508";
-    };
-    name = "mantisbt-1.2.19";
-    in
-      # We have to copy every time; otherwise config won't be found.
-      pkgs.runCommand name
-        { preferLocalBuild = true; allowSubstitutes = false; }
-        (''
-          mkdir -p "$out"
-          cd "$out"
-          tar -xf '${src}' --strip-components=1
-          ln -s '${config_inc}' config_inc.php
-        ''
-        + lib.optionalString (!freshInstall) "rm -r admin/"
-        );
-in
-{
-  options.services.mantisbt = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-      description = ''
-        Enable the mantisbt web service.
-        This switches on httpd with PHP and database.
-      '';
-    };
-    urlPrefix = mkOption {
-      type = types.string;
-      default = "/mantisbt";
-      description = "The URL prefix under which the mantisbt service appears.";
-    };
-    extraConfig = mkOption {
-      type = types.lines;
-      default = "";
-      description = ''
-        The contents of config_inc.php, without leading &lt;?php.
-        If left empty, the admin directory will be accessible.
-      '';
-    };
-  };
-
-
-  config = mkIf cfg.enable {
-    services.mysql.enable = true;
-    services.httpd.enable = true;
-    services.httpd.enablePHP = true;
-    # The httpd sub-service showing mantisbt.
-    services.httpd.extraSubservices = [ { function = { ... }: {
-      extraConfig =
-        ''
-          Alias ${cfg.urlPrefix} "${mantisbt}"
-        '';
-    };}];
-  };
-}