diff --git a/plugins/null-ls/servers.nix b/plugins/null-ls/servers.nix
index 77f7c0e0..214dd488 100644
--- a/plugins/null-ls/servers.nix
+++ b/plugins/null-ls/servers.nix
@@ -17,59 +17,101 @@
     };
     completion = {};
     diagnostics = {
-      flake8 = {
-        package = pkgs.python3Packages.flake8;
-      };
-      shellcheck = {
-        package = pkgs.shellcheck;
+      alex = {
+        package = pkgs.nodePackages.alex;
       };
       cppcheck = {
         package = pkgs.cppcheck;
       };
+      deadnix = {
+        package = pkgs.deadnix;
+      };
+      flake8 = {
+        package = pkgs.python3Packages.flake8;
+      };
       gitlint = {
         package = pkgs.gitlint;
       };
-      deadnix = {
-        package = pkgs.deadnix;
+      hadolint = {
+        package = pkgs.hadolint;
+      };
+      luacheck = {
+        package = pkgs.luaPackages.luacheck;
+      };
+      mypy = {
+        package = pkgs.mypy;
+      };
+      protolint = {
+        package = pkgs.protolint;
+      };
+      pylint = {
+        package = pkgs.pylint;
+      };
+      shellcheck = {
+        package = pkgs.shellcheck;
       };
       statix = {
         package = pkgs.statix;
       };
+      vale = {
+        package = pkgs.vale;
+      };
+      vulture = {
+        package = pkgs.python3Packages.vulture;
+      };
     };
     formatting = {
-      phpcbf = {
-        package = pkgs.phpPackages.phpcbf;
-      };
       alejandra = {
         package = pkgs.alejandra;
       };
+      black = {
+        package = pkgs.python3Packages.black;
+      };
+      cbfmt = {
+        package = pkgs.cbfmt;
+      };
+      fnlfmt = {
+        package = pkgs.fnlfmt;
+      };
+      fourmolu = {
+        package = pkgs.haskellPackages.fourmolu;
+      };
+      isort = {
+        package = pkgs.isort;
+      };
+      jq = {
+        package = pkgs.jq;
+      };
+      markdownlint = {
+        package = pkgs.nodePackages.markdownlint-cli;
+      };
       nixfmt = {
         package = pkgs.nixfmt;
       };
       nixpkgs_fmt = {
         package = pkgs.nixpkgs-fmt;
       };
+      phpcbf = {
+        package = pkgs.phpPackages.phpcbf;
+      };
       prettier = {
         package = pkgs.nodePackages.prettier;
       };
-      black = {
-        package = pkgs.python3Packages.black;
+      protolint = {
+        package = pkgs.protolint;
       };
-      fourmolu = {
-        package = pkgs.haskellPackages.fourmolu;
-      };
-      fnlfmt = {
-        package = pkgs.fnlfmt;
-      };
-      stylua = {
-        package = pkgs.stylua;
-      };
-      cbfmt = {
-        package = pkgs.cbfmt;
+      rustfmt = {
+        package = pkgs.rustfmt;
       };
       shfmt = {
         package = pkgs.shfmt;
       };
+      sqlfluff = {
+        package = pkgs.sqlfluff;
+      };
+      stylua = {
+        package = pkgs.stylua;
+      };
       taplo = {
         package = pkgs.taplo;
       };
diff --git a/tests/test-sources/plugins/null-ls.nix b/tests/test-sources/plugins/null-ls.nix
index 074176df..357604a4 100644
--- a/tests/test-sources/plugins/null-ls.nix
+++ b/tests/test-sources/plugins/null-ls.nix
@@ -47,6 +47,14 @@
           shellcheck.enable = true;
           statix.enable = true;
           deadnix.enable = true;
+          vale.enable = true;
+          vulture.enable = true;
+          alex.enable = true;
+          protolint.enable = true;
+          hadolint.enable = true;
+          luacheck.enable = true;
+          mypy.enable = true;
+          pylint.enable = true;
         };
         formatting = {
           alejandra.enable = true;
@@ -61,6 +69,12 @@
           stylua.enable = true;
           taplo.enable = true;
           nixpkgs_fmt.enable = true;
+          isort.enable = true;
+          jq.enable = true;
+          markdownlint.enable = true;
+          protolint.enable = true;
+          rustfmt.enable = true;
+          sqlfluff.enable = true;
         };
       };
     };