diff --git a/pkgs/by-name/no/notify-sharp/package.nix b/pkgs/by-name/no/notify-sharp/package.nix
deleted file mode 100644
index 0871187848c6..000000000000
--- a/pkgs/by-name/no/notify-sharp/package.nix
+++ /dev/null
@@ -1,49 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchFromGitLab,
-  pkg-config,
-  autoreconfHook,
-  mono,
-  gtk-sharp-3_0,
-  dbus-sharp-1_0,
-  dbus-sharp-glib-1_0,
-}:
-
-stdenv.mkDerivation rec {
-  pname = "notify-sharp";
-  version = "3.0.3";
-
-  src = fetchFromGitLab {
-    domain = "gitlab.gnome.org";
-    owner = "Archive";
-    repo = "notify-sharp";
-
-    rev = version;
-    sha256 = "1vm7mnmxdwrgy4mr07lfva8sa6a32f2ah5x7w8yzcmahaks3sj5m";
-  };
-
-  nativeBuildInputs = [
-    pkg-config
-    autoreconfHook
-  ];
-
-  buildInputs = [
-    mono
-    gtk-sharp-3_0
-    dbus-sharp-1_0
-    dbus-sharp-glib-1_0
-  ];
-
-  dontStrip = true;
-
-  postPatch = ''
-    sed -i 's#^[ \t]*DOCDIR=.*$#DOCDIR=$out/lib/monodoc#' ./configure.ac
-  '';
-
-  meta = with lib; {
-    description = "D-Bus for .NET";
-    platforms = platforms.linux;
-    license = licenses.mit;
-  };
-}
diff --git a/pkgs/development/libraries/dbus-sharp-glib/dbus-sharp-glib-1.0.nix b/pkgs/development/libraries/dbus-sharp-glib/dbus-sharp-glib-1.0.nix
deleted file mode 100644
index 077c52be3735..000000000000
--- a/pkgs/development/libraries/dbus-sharp-glib/dbus-sharp-glib-1.0.nix
+++ /dev/null
@@ -1,40 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchFromGitHub,
-  autoreconfHook,
-  pkg-config,
-  mono,
-  dbus-sharp-1_0,
-}:
-
-stdenv.mkDerivation rec {
-  pname = "dbus-sharp-glib";
-  version = "0.5";
-
-  src = fetchFromGitHub {
-    owner = "mono";
-    repo = "dbus-sharp-glib";
-
-    rev = "v${version}";
-    sha256 = "0z8ylzby8n5sar7aywc8rngd9ap5qqznadsscp5v34cacdfz1gxm";
-  };
-
-  nativeBuildInputs = [
-    pkg-config
-    autoreconfHook
-    mono # gmcs
-  ];
-  buildInputs = [
-    mono
-    dbus-sharp-1_0
-  ];
-
-  dontStrip = true;
-
-  meta = with lib; {
-    description = "D-Bus for .NET: GLib integration module";
-    platforms = platforms.linux;
-    license = licenses.mit;
-  };
-}
diff --git a/pkgs/development/libraries/dbus-sharp-glib/default.nix b/pkgs/development/libraries/dbus-sharp-glib/default.nix
deleted file mode 100644
index 538a14597b10..000000000000
--- a/pkgs/development/libraries/dbus-sharp-glib/default.nix
+++ /dev/null
@@ -1,40 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchFromGitHub,
-  pkg-config,
-  mono,
-  dbus-sharp-2_0,
-  autoreconfHook,
-}:
-
-stdenv.mkDerivation rec {
-  pname = "dbus-sharp-glib";
-  version = "0.6";
-
-  src = fetchFromGitHub {
-    owner = "mono";
-    repo = "dbus-sharp-glib";
-
-    rev = "v${version}";
-    sha256 = "0i39kfg731as6j0hlmasgj8dyw5xsak7rl2dlimi1naphhffwzm8";
-  };
-
-  nativeBuildInputs = [
-    pkg-config
-    autoreconfHook
-    mono # gmcs
-  ];
-  buildInputs = [
-    mono
-    dbus-sharp-2_0
-  ];
-
-  dontStrip = true;
-
-  meta = with lib; {
-    description = "D-Bus for .NET: GLib integration module";
-    platforms = platforms.linux;
-    license = licenses.mit;
-  };
-}
diff --git a/pkgs/development/libraries/dbus-sharp/dbus-sharp-1.0.nix b/pkgs/development/libraries/dbus-sharp/dbus-sharp-1.0.nix
deleted file mode 100644
index e949ebb05fe5..000000000000
--- a/pkgs/development/libraries/dbus-sharp/dbus-sharp-1.0.nix
+++ /dev/null
@@ -1,36 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchFromGitHub,
-  pkg-config,
-  mono,
-  autoreconfHook,
-}:
-
-stdenv.mkDerivation rec {
-  pname = "dbus-sharp";
-  version = "0.7";
-
-  src = fetchFromGitHub {
-    owner = "mono";
-    repo = "dbus-sharp";
-
-    rev = "v${version}";
-    sha256 = "13qlqx9wqahfpzzl59157cjxprqcx2bd40w5gb2bs3vdx058p562";
-  };
-
-  nativeBuildInputs = [
-    pkg-config
-    autoreconfHook
-    mono # gmcs
-  ];
-  buildInputs = [ mono ];
-
-  dontStrip = true;
-
-  meta = with lib; {
-    description = "D-Bus for .NET";
-    platforms = platforms.linux;
-    license = licenses.mit;
-  };
-}
diff --git a/pkgs/development/libraries/dbus-sharp/default.nix b/pkgs/development/libraries/dbus-sharp/default.nix
deleted file mode 100644
index 31bb564d3a5a..000000000000
--- a/pkgs/development/libraries/dbus-sharp/default.nix
+++ /dev/null
@@ -1,39 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchFromGitHub,
-  pkg-config,
-  mono4,
-  autoreconfHook,
-}:
-
-stdenv.mkDerivation rec {
-  pname = "dbus-sharp";
-  version = "0.8.1";
-
-  src = fetchFromGitHub {
-    owner = "mono";
-    repo = "dbus-sharp";
-
-    rev = "v${version}";
-    sha256 = "1g5lblrvkd0wnhfzp326by6n3a9mj2bj7a7646g0ziwgsxp5w6y7";
-  };
-
-  nativeBuildInputs = [
-    pkg-config
-    autoreconfHook
-    mono4 # gmcs
-  ];
-
-  # Use msbuild when https://github.com/NixOS/nixpkgs/pull/43680 is merged
-  # See: https://github.com/NixOS/nixpkgs/pull/46060
-  buildInputs = [ mono4 ];
-
-  dontStrip = true;
-
-  meta = with lib; {
-    description = "D-Bus for .NET";
-    platforms = platforms.linux;
-    license = licenses.mit;
-  };
-}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 5238256bd08e..7731ef1b3906 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -724,8 +724,12 @@ mapAliases {
   daytona-bin = throw "'daytona-bin' has been removed, as it was unmaintained in nixpkgs"; # Added 2025-07-21
   dbeaver = throw "'dbeaver' has been renamed to/replaced by 'dbeaver-bin'"; # Added 2024-05-16
   dbench = throw "'dbench' has been removed as it is unmaintained for 14 years and broken"; # Added 2025-05-17
-  dclib = throw "'dclib' has been removed as it is unmaintained for 16 years and broken"; # Added 2025-05-25
   dbus-map = throw "'dbus-map' has been dropped as it is unmaintained"; # Added 2024-11-01
+  dbus-sharp-1_0 = throw "'dbus-sharp-1_0' has been removed as it was unmaintained and had no dependents"; # Added 2025-08-25
+  dbus-sharp-2_0 = throw "'dbus-sharp-2_0' has been removed as it was unmaintained and had no dependents"; # Added 2025-08-25
+  dbus-sharp-glib-1_0 = throw "'dbus-sharp-glib-1_0' has been removed as it was unmaintained and had no dependents"; # Added 2025-08-25
+  dbus-sharp-glib-2_0 = throw "'dbus-sharp-glib-2_0' has been removed as it was unmaintained and had no dependents"; # Added 2025-08-25
+  dclib = throw "'dclib' has been removed as it is unmaintained for 16 years and broken"; # Added 2025-05-25
   deadpixi-sam = deadpixi-sam-unstable;
 
   debugedit-unstable = throw "'debugedit-unstable' has been renamed to/replaced by 'debugedit'"; # Converted to throw 2024-10-17
@@ -1604,6 +1608,7 @@ mapAliases {
   netbox_3_7 = throw "netbox 3.7 series has been removed as it was EOL"; # Added 2025-04-23
   nettools = net-tools; # Added 2025-06-11
   newt-go = fosrl-newt; # Added 2025-06-24
+  notify-sharp = throw "'notify-sharp' has been removed as it was unmaintained and depends on deprecated dbus-sharp versions"; # Added 2025-08-25
   nextcloud29 = throw ''
     Nextcloud v29 has been removed from `nixpkgs` as the support for is dropped
     by upstream in 2025-04. Please upgrade to at least Nextcloud v30 by declaring
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 065027ebe24f..b303b5444d82 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7510,13 +7510,6 @@ with pkgs;
   db62 = callPackage ../development/libraries/db/db-6.2.nix { };
 
   dbus = callPackage ../development/libraries/dbus { };
-  dbus-sharp-1_0 = callPackage ../development/libraries/dbus-sharp/dbus-sharp-1.0.nix { };
-  dbus-sharp-2_0 = callPackage ../development/libraries/dbus-sharp { };
-
-  dbus-sharp-glib-1_0 =
-    callPackage ../development/libraries/dbus-sharp-glib/dbus-sharp-glib-1.0.nix
-      { };
-  dbus-sharp-glib-2_0 = callPackage ../development/libraries/dbus-sharp-glib { };
 
   makeDBusConf = callPackage ../development/libraries/dbus/make-dbus-conf.nix { };