diff --git a/.helix/languages.toml b/.helix/languages.toml
new file mode 100644
index 0000000..e3987f3
--- /dev/null
+++ b/.helix/languages.toml
@@ -0,0 +1,3 @@
+[[language]]
+name = "nix"
+formatter = { command = "alejandra", args = ["--quiet"] }