diff --git a/pkgs/development/libraries/yaml-cpp/0.3.0.nix b/pkgs/development/libraries/yaml-cpp/0.3.0.nix
deleted file mode 100644
index e1103c33a036..000000000000
--- a/pkgs/development/libraries/yaml-cpp/0.3.0.nix
+++ /dev/null
@@ -1,39 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchFromGitHub,
-  cmake,
-}:
-
-stdenv.mkDerivation rec {
-  pname = "yaml-cpp";
-  version = "0.3.0";
-
-  src = fetchFromGitHub {
-    owner = "jbeder";
-    repo = "yaml-cpp";
-    rev = "release-${version}";
-    hash = "sha256-pmgcULTXhl83+Wc8ZsGebnJ1t0XybHhUEJxDnEZE5x8=";
-  };
-
-  strictDeps = true;
-
-  nativeBuildInputs = [
-    cmake
-  ];
-
-  cmakeFlags = [
-    "-DYAML_CPP_BUILD_TOOLS=${lib.boolToString doCheck}"
-    "-DBUILD_SHARED_LIBS=${lib.boolToString (!stdenv.hostPlatform.isStatic)}"
-  ];
-
-  doCheck = stdenv.buildPlatform.canExecute stdenv.hostPlatform;
-
-  meta = with lib; {
-    description = "YAML parser and emitter for C++";
-    homepage = "https://github.com/jbeder/yaml-cpp";
-    license = licenses.mit;
-    platforms = platforms.all;
-    maintainers = with maintainers; [ OPNA2608 ];
-  };
-}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index de21703fc4b1..2bb8e830460b 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -1352,8 +1352,6 @@ mapAliases {
   libvpx_1_8 = throw "libvpx_1_8 has been removed because it is impacted by security issues and not used in nixpkgs, move to 'libvpx'"; # Added 2024-07-26
   libwnck3 = libwnck; # Added 2021-06-23
   libxplayer-plparser = throw "libxplayer-plparser has been removed as the upstream project was archived"; # Added 2024-12-27
-  libyamlcpp = yaml-cpp; # Added 2023-01-29
-  libyamlcpp_0_3 = yaml-cpp_0_3; # Added 2023-01-29
   libzapojit = throw "'libzapojit' has been removed due to lack of upstream maintenance and archival"; # Added 2025-04-16
   licensor = throw "'licensor' has been removed due to lack of upstream maintenance"; # Added 2025-01-25
   lightdm_gtk_greeter = lightdm-gtk-greeter; # Added 2022-08-01
@@ -2657,6 +2655,7 @@ mapAliases {
   ### Y ###
 
   yacc = throw "'yacc' has been renamed to/replaced by 'bison'"; # Converted to throw 2024-10-17
+  yaml-cpp_0_3 = throw "yaml-cpp_0_3 has been removed, as it was unused"; # Added 2025-09-16
   yesplaymusic = throw "YesPlayMusic has been removed as it was broken, unmaintained, and used deprecated Node and Electron versions"; # Added 2024-12-13
   yafaray-core = libyafaray; # Added 2022-09-23
   yandex-browser = throw "'yandex-browser' has been removed, as it was broken and unmaintained"; # Added 2025-04-17
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 158a68831710..d427348761af 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -8327,8 +8327,6 @@ with pkgs;
 
   yaml-cpp = callPackage ../development/libraries/yaml-cpp { };
 
-  yaml-cpp_0_3 = callPackage ../development/libraries/yaml-cpp/0.3.0.nix { };
-
   liquid-dsp = callPackage ../development/libraries/liquid-dsp {
     inherit (darwin) autoSignDarwinBinariesHook;
   };