diff --git a/flake.lock b/flake.lock
index ff7cc2c..baa19e7 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,16 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1777014176,
-        "narHash": "sha256-OzisFv/K6SRIKNOUsR+9Xij/HnS+UqXWhrheEHPJJ3E=",
+        "lastModified": 1792285535,
+        "narHash": "sha256-2ziqQLBRfA3qKlOwHv3WcYHymPA4+tm0IQQkLI6a3L4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "3f05c8657c7016fb8cfec9ca06dac066cdeddb91",
+        "rev": "21691b79c41ba30a80b110523c943d8d45a0912b",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixpkgs-25.11-darwin",
+        "ref": "nixpkgs-26.05-darwin",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index 67d1faa..25d8ea4 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,7 +2,7 @@
   description = "";
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-25.11-darwin";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-26.05-darwin";
     nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
   };
 
@@ -20,7 +20,7 @@
           # lefthook before 2.1.6 runs hooks under a pty, which agent sandboxes deny.
           nixpkgs-unstable.legacyPackages.${system}.lefthook
           ls-lint
-          nixfmt-rfc-style
+          nixfmt
           nodejs_24
           pnpm
           statix
diff --git a/package.json b/package.json
index 2e620b2..6daf267 100644
--- a/package.json
+++ b/package.json
@@ -24,5 +24,5 @@
     "typescript": "6.0.3",
     "vitest": "4.1.11"
   },
-  "packageManager": "pnpm@10.34.6"
+  "packageManager": "pnpm@11.27.0"
 }