diff --git a/flake.nix b/flake.nix
index e3e6934..b26110e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -178,7 +178,6 @@
       {
         devShell = pkgs.mkShell {
           buildInputs = with pkgs; [
-            treefmt
             nixpkgs-fmt
             # To enable webhint to analyze source files
             nodejs
diff --git a/treefmt.toml b/treefmt.toml
deleted file mode 100644
index 8309d20..0000000
--- a/treefmt.toml
+++ /dev/null
@@ -1,3 +0,0 @@
-[formatter.nix]
-command = "nixpkgs-fmt"
-includes = ["*.nix"]