diff --git a/pkgs/by-name/md/mdbook-alerts/package.nix b/pkgs/by-name/md/mdbook-alerts/package.nix
deleted file mode 100644
index 118789c9357e..000000000000
--- a/pkgs/by-name/md/mdbook-alerts/package.nix
+++ /dev/null
@@ -1,30 +0,0 @@
-{
-  lib,
-  fetchFromGitHub,
-  rustPlatform,
-}:
-
-rustPlatform.buildRustPackage rec {
-  pname = "mdbook-alerts";
-  version = "0.8.0";
-
-  src = fetchFromGitHub {
-    owner = "lambdalisue";
-    repo = "rs-mdbook-alerts";
-    rev = "v${version}";
-    hash = "sha256-82WbO/j9F0WKGkSkTf27dGdxdHF3OONFvn68ujWMwSM=";
-  };
-
-  cargoHash = "sha256-A+jodjynhQ6WFp/Ci5Jk0+baDx6QzJ8u+UMmLugtJUc=";
-
-  meta = {
-    description = "Preprocessor for mdbook to support the inclusion of Markdown alerts";
-    mainProgram = "mdbook-alerts";
-    homepage = "https://github.com/lambdalisue/rs-mdbook-alerts";
-    license = lib.licenses.mit;
-    maintainers = with lib.maintainers; [
-      brianmcgillion
-      matthiasbeyer
-    ];
-  };
-}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index e9c2d42ceb98..2d3d3fdf8b7d 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -1079,6 +1079,7 @@ mapAliases {
   matrix-synapse-tools.rust-synapse-compress-state = throw "'matrix-synapse-tools.rust-synapse-compress-state' has been renamed to/replaced by 'rust-synapse-compress-state'"; # Converted to throw 2025-10-27
   matrix-synapse-tools.synadm = throw "'matrix-synapse-tools.synadm' has been renamed to/replaced by 'synadm'"; # Converted to throw 2025-10-27
   mcomix3 = throw "'mcomix3' has been renamed to/replaced by 'mcomix'"; # Converted to throw 2025-10-27
+  mdbook-alerts = throw "'mdbook-alerts' has been removed because it is deprecated and natively supported by mdbook since version 0.5.0"; # Added 2026-01-07
   mdt = throw "'mdt' has been renamed to/replaced by 'md-tui'"; # Converted to throw 2025-10-27
   mediastreamer = throw "'mediastreamer' has been moved to 'linphonePackages.mediastreamer2'"; # Added 2025-09-20
   mediastreamer-openh264 = throw "'mediastreamer-openh264' has been moved to 'linphonePackages.msopenh264'"; # Added 2025-09-20