diff --git a/docs/manual/release-notes/rl-0.9.md b/docs/manual/release-notes/rl-0.9.md
index c38d2421..f512540c 100644
--- a/docs/manual/release-notes/rl-0.9.md
+++ b/docs/manual/release-notes/rl-0.9.md
@@ -132,7 +132,8 @@
 
 - Added [sqruff](https://github.com/quarylabs/sqruff) support to `languages.sql`
 
-- Added [Pyrefly](https://pyrefly.org/) support to `languages.python`
+- Added [Pyrefly](https://pyrefly.org/) and [zuban](https://zubanls.com/)
+  support to `languages.python`
 
 - Added TOML support via {option}`languages.toml` and the
   [Tombi](https://tombi-toml.github.io/tombi/) language server, linter, and
@@ -144,3 +145,8 @@
 [Machshev](https://github.com/machshev):
 
 - Added `ruff` and `ty` LSP support for Python under `programs.python`.
+
+[Snoweuph](https://github.com/snoweuph)
+
+- Added [Selenen](https://github.com/kampfkarren/selene) for more diagnostics in
+  `languages.lua`.
diff --git a/modules/plugins/languages/lua.nix b/modules/plugins/languages/lua.nix
index 276c9a6a..564fcece 100644
--- a/modules/plugins/languages/lua.nix
+++ b/modules/plugins/languages/lua.nix
@@ -9,7 +9,7 @@
   inherit (lib.modules) mkIf mkMerge;
   inherit (lib.meta) getExe;
   inherit (lib.types) bool enum listOf;
-  inherit (lib.nvim.types) diagnostics mkGrammarOption deprecatedSingleOrListOf;
+  inherit (lib.nvim.types) diagnostics mkGrammarOption;
   inherit (lib.nvim.dag) entryBefore;
   inherit (lib.nvim.attrsets) mapListToAttrs;
 
@@ -46,6 +46,9 @@
     luacheck = {
       package = pkgs.luajitPackages.luacheck;
     };
+    selene = {
+      package = pkgs.selene;
+    };
   };
 in {
   imports = [
@@ -79,7 +82,7 @@ in {
         description = "Enable Lua formatting";
       };
       type = mkOption {
-        type = deprecatedSingleOrListOf "vim.language.lua.format.type" (enum (attrNames formats));
+        type = listOf (enum (attrNames formats));
         default = defaultFormat;
         description = "Lua formatter to use";
       };
diff --git a/modules/plugins/languages/python.nix b/modules/plugins/languages/python.nix
index 0fffbbcc..04d2554f 100644
--- a/modules/plugins/languages/python.nix
+++ b/modules/plugins/languages/python.nix
@@ -169,6 +169,22 @@
         ".git"
       ];
     };
+
+    zuban = {
+      enable = true;
+      cmd = [(getExe pkgs.zuban) "server"];
+      filetypes = ["python"];
+      root_markers = [
+        "pyproject.toml"
+        "setup.py"
+        "setup.cfg"
+        "requirements.txt"
+        "Pipfile"
+        ".git"
+        "mypy.ini"
+        ".mypy.ini"
+      ];
+    };
   };
 
   defaultFormat = ["black"];