diff --git a/docs/release-notes/rl-0.7.md b/docs/release-notes/rl-0.7.md
index 9d186d32..49e99df7 100644
--- a/docs/release-notes/rl-0.7.md
+++ b/docs/release-notes/rl-0.7.md
@@ -68,9 +68,19 @@ everyone.
 As part of the autocompletion rewrite, modules that used to use a `type` option
 have been replaced by per-plugin modules instead. Since both modules only had
 one type, you can simply change
+
 - `vim.autocomplete.*` -> `vim.autocomplete.nvim-cmp.*`
 - `vim.autopairs.enable` -> `vim.autopairs.nvim-autopairs.enable`
 
+### `nixpkgs-fmt` removed in favor of `nixfmt` {#sec-nixpkgs-fmt-deprecation}
+
+`nixpkgs-fmt` has been archived for a while, and it's finally being removed in
+favor of nixfmt (more information can be found
+[here](https://github.com/nix-community/nixpkgs-fmt?tab=readme-ov-file#nixpkgs-fmt---nix-code-formatter-for-nixpkgs).
+
+To migrate to `nixfmt`, simply change `vim.languages.nix.format.type` to
+`nixfmt`.
+
 ## Changelog {#sec-release-0.7-changelog}
 
 [ItsSorae](https://github.com/ItsSorae):
@@ -220,8 +230,7 @@ one type, you can simply change
   `vim.languages.ts.extensions.ts-error-translator` to aid with Typescript
   development.
 
-- Add [neo-tree.nvim] as an alternative file-tree plugin. It will be available
-  under `vim.filetree.neo-tree`, similar to nvimtree.
+- Add [neo-tree.nvim] as an alternative file-tree plugin. It will be available under `vim.filetree.neo-tree`, similar to nvimtree.
 
 - Add `nvf-print-config` & `nvf-print-config-path` helper scripts to Neovim
   closure. Both of those scripts have been automatically added to your PATH upon
@@ -286,3 +295,7 @@ one type, you can simply change
 - Add LSP support for Scala via
   [nvim-metals](https://github.com/scalameta/nvim-metals)
 
+[nezia1](https://github.com/nezia1):
+
+- Add [biome](https://github.com/biomejs/biome) support for Typescript, CSS and Svelte. Enable them via [](#opt-vim.languages.ts.format.type), [](#opt-vim.languages.css.format.type) and [](#opt-vim.languages.svelte.format.type) respectively.
+- Replace [nixpkgs-fmt](https://github.com/nix-community/nixpkgs-fmt) with [nixfmt](https://github.com/NixOS/nixfmt) (nixfmt-rfc-style).
diff --git a/modules/plugins/languages/css.nix b/modules/plugins/languages/css.nix
index 1535ecaf..8330a41a 100644
--- a/modules/plugins/languages/css.nix
+++ b/modules/plugins/languages/css.nix
@@ -63,6 +63,18 @@
         )
       '';
     };
+
+    biome = {
+      package = pkgs.biome;
+      nullConfig = ''
+        table.insert(
+          ls_sources,
+          null_ls.builtins.formatting.biome.with({
+            command = "${cfg.format.package}/bin/biome",
+          })
+        )
+      '';
+    };
   };
 in {
   options.vim.languages.css = {
diff --git a/modules/plugins/languages/nix.nix b/modules/plugins/languages/nix.nix
index 6cf1f90b..82dded69 100644
--- a/modules/plugins/languages/nix.nix
+++ b/modules/plugins/languages/nix.nix
@@ -5,6 +5,7 @@
   ...
 }: let
   inherit (builtins) attrNames;
+  inherit (lib) concatStringsSep;
   inherit (lib.options) mkEnableOption mkOption;
   inherit (lib.modules) mkIf mkMerge;
   inherit (lib.lists) isList;
@@ -62,10 +63,10 @@
                 command = {"${cfg.format.package}/bin/alejandra", "--quiet"},
               },
             ''}
-          ${optionalString (cfg.format.type == "nixpkgs-fmt")
+          ${optionalString (cfg.format.type == "nixfmt")
             ''
               formatting = {
-                command = {"${cfg.format.package}/bin/nixpkgs-fmt"},
+                command = {"${cfg.format.package}/bin/nixfmt"},
               },
             ''}
             },
@@ -90,10 +91,19 @@
       '';
     };
 
-    nixpkgs-fmt = {
-      package = pkgs.nixpkgs-fmt;
-      # Never need to use null-ls for nixpkgs-fmt
+    nixfmt = {
+      package = pkgs.nixfmt-rfc-style;
+      nullConfig = ''
+        table.insert(
+          ls_sources,
+          null_ls.builtins.formatting.nixfmt.with({
+            command = "${cfg.format.package}/bin/nixfmt"
+          })
+        )
+      '';
     };
+
+    nixpkgs-fmt = null; # removed
   };
 
   defaultDiagnosticsProvider = ["statix" "deadnix"];
@@ -175,6 +185,12 @@ in {
 
   config = mkIf cfg.enable (mkMerge [
     {
+      assertions = [
+        {
+          assertion = cfg.format.type != "nixpkgs-fmt";
+          message = "nixpkgs-fmt has been archived upstream. Please use one of the following instead: ${concatStringsSep ", " (attrNames formats)}";
+        }
+      ];
       vim.pluginRC.nix = ''
         vim.api.nvim_create_autocmd("FileType", {
           pattern = "nix",
diff --git a/modules/plugins/languages/svelte.nix b/modules/plugins/languages/svelte.nix
index e6c9d621..a3c55e10 100644
--- a/modules/plugins/languages/svelte.nix
+++ b/modules/plugins/languages/svelte.nix
@@ -48,6 +48,18 @@
         )
       '';
     };
+
+    biome = {
+      package = pkgs.biome;
+      nullConfig = ''
+        table.insert(
+          ls_sources,
+          null_ls.builtins.formatting.biome.with({
+            command = "${cfg.format.package}/bin/biome",
+          })
+        )
+      '';
+    };
   };
 
   # TODO: specify packages
diff --git a/modules/plugins/languages/ts.nix b/modules/plugins/languages/ts.nix
index 5ceccecf..726950ef 100644
--- a/modules/plugins/languages/ts.nix
+++ b/modules/plugins/languages/ts.nix
@@ -95,6 +95,18 @@
         )
       '';
     };
+
+    biome = {
+      package = pkgs.biome;
+      nullConfig = ''
+        table.insert(
+          ls_sources,
+          null_ls.builtins.formatting.biome.with({
+            command = "${cfg.format.package}/bin/biome",
+          })
+        )
+      '';
+    };
   };
 
   # TODO: specify packages