diff --git a/.prettierignore b/.prettierignore
new file mode 100644
index 00000000..94acbf06
--- /dev/null
+++ b/.prettierignore
@@ -0,0 +1,2 @@
+*.md
+.github/
diff --git a/flake.lock b/flake.lock
index 46c6a35a..6bd1c34b 100644
--- a/flake.lock
+++ b/flake.lock
@@ -254,7 +254,8 @@
         "nix-darwin": "nix-darwin",
         "nixos-generators": "nixos-generators",
         "nixpkgs": "nixpkgs_2",
-        "pre-commit-hooks-nix": "pre-commit-hooks-nix"
+        "pre-commit-hooks-nix": "pre-commit-hooks-nix",
+        "treefmt-nix": "treefmt-nix"
       }
     },
     "systems": {
@@ -271,6 +272,26 @@
         "repo": "default",
         "type": "github"
       }
+    },
+    "treefmt-nix": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1711963903,
+        "narHash": "sha256-N3QDhoaX+paWXHbEXZapqd1r95mdshxToGowtjtYkGI=",
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "rev": "49dc4a92b02b8e68798abd99184f228243b6e3ac",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "type": "github"
+      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index b06f49f5..3e17cef7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -14,6 +14,9 @@
     nixos-generators.url = github:nix-community/nixos-generators;
     nixos-generators.inputs.nixpkgs.follows = "nixpkgs";
 
+    treefmt-nix.url = "github:numtide/treefmt-nix";
+    treefmt-nix.inputs.nixpkgs.follows = "nixpkgs";
+
     pre-commit-hooks-nix.url = github:cachix/pre-commit-hooks.nix;
     pre-commit-hooks-nix.inputs.nixpkgs.follows = "nixpkgs";
 
@@ -29,6 +32,7 @@
 
         imports = [
           inputs.pre-commit-hooks-nix.flakeModule
+          inputs.treefmt-nix.flakeModule
         ];
         systems = [ "x86_64-linux" "aarch64-darwin" ];
 
@@ -53,11 +57,11 @@
             settings = {
               src = ./.;
               hooks = {
+                treefmt.enable = true;
                 nixpkgs-fmt.enable = true;
 
                 prettier = {
                   enable = true;
-                  excludes = [ ".github/" ];
                 };
 
                 actionlint = {
@@ -119,6 +123,14 @@
             )
           );
 
+          treefmt.config = {
+            projectRootFile = "flake.nix";
+            programs = {
+              prettier.enable = true;
+              nixpkgs-fmt.enable = true;
+            };
+          };
+
           apps =
             let
               mkApp = pkg: script: {
@@ -134,6 +146,10 @@
             });
 
           devShells.default = pkgs.mkShell {
+            inputsFrom = [
+              config.treefmt.build.devShell
+            ];
+
             buildInputs = (with pkgs;
               [
                 actionlint