diff --git a/lua/null-ls/builtins/formatting/alejandra.lua b/lua/null-ls/builtins/formatting/alejandra.lua
new file mode 100644
index 000000000..8efc8c137
--- /dev/null
+++ b/lua/null-ls/builtins/formatting/alejandra.lua
@@ -0,0 +1,20 @@
+local h = require("null-ls.helpers")
+local methods = require("null-ls.methods")
+
+local FORMATTING = methods.internal.FORMATTING
+
+return h.make_builtin({
+    name = "alejandra",
+    meta = {
+        url = "https://github.com/kamadorueda/alejandra",
+        description = "The Uncompromising Nix Code Formatter",
+    },
+    method = FORMATTING,
+    filetypes = { "nix" },
+    generator_opts = {
+        command = "alejandra",
+        args = { "--quiet" },
+        to_stdin = true,
+    },
+    factory = h.formatter_factory,
+})