diff --git a/flake.lock b/flake.lock
index ebcb701e..262c3918 100644
--- a/flake.lock
+++ b/flake.lock
@@ -52,15 +52,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1749608720,
-        "narHash": "sha256-xYOyEjd8KG84aO8yNceMtLSz1XZIj6wEUaimNgPMCII=",
+        "lastModified": 1749650737,
+        "narHash": "sha256-YVb4FRcluGSVQm1EY5g4aFKdKjOarLn/hEYhv3alMNY=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "cd9bf3369b9fc4ea0a6a8d91902a41d520580cb9",
+        "rev": "028a94be88e833c919631df2973a00ec008062a8",
         "type": "github"
       },
       "original": {
         "owner": "nixos",
+        "ref": "haskell-updates",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index cfafb29e..acc9a576 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,6 +1,6 @@
 {
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs";
+    nixpkgs.url = "github:nixos/nixpkgs/haskell-updates";
     flake-parts.url = "github:hercules-ci/flake-parts";
     haskell-flake.url = "github:srid/haskell-flake";
     flake-root.url = "github:srid/flake-root";
@@ -56,6 +56,7 @@
             fourmolu.check = false;
             hls-plugin-api.jailbreak = true;
             ghcide.jailbreak = true;
+            # stylish-haskell.jailbreak = true;
             haskell-language-server.jailbreak = true;
 
             Diff = { super, ... }:
@@ -79,14 +80,15 @@
               { custom = _: super.ghc-lib-parser-ex_9_12_0_0; };
             ghc-lib-parser = { super, ... }:
               {
-                # custom = _: super.ghc-lib-parser_9_12_2_20250421;
-                custom = _: super.ghc-lib-parser_9_12_2_20250320;
+                custom = _: super.ghc-lib-parser_9_12_2_20250421;
+                # custom = _: super.ghc-lib-parser_9_12_2_20250320;
               };
           };
           packages = {
             # https://community.flake.parts/haskell-flake/dependency#path
             # tls.source = "1.9.0";
             fourmolu.source = "0.18.0.0";
+            stylish-haskell.source = "0.15.1.0";
           };
           devShell = {
             tools = hp: {