diff --git a/src/main.nix b/src/main.nix
index 0b574ba3..1e86772a 100644
--- a/src/main.nix
+++ b/src/main.nix
@@ -77,6 +77,7 @@ in {
     # nix
     nil
     alejandra
+    nixpkgs-fmt
 
     # node/yarn/deno
     nodejs