diff --git a/default.nix b/default.nix
index 9441aa5..ea248b0 100644
--- a/default.nix
+++ b/default.nix
@@ -5,7 +5,7 @@
   buildPythonPackage,
 
   # build-system
-  setuptools_scm,
+  setuptools-scm,
 
   # dependencies
   psutil,
@@ -19,7 +19,7 @@ let
 in buildPythonPackage rec {
   inherit pname version;
   pyproject = true;
-  build-system = [ setuptools_scm ];
+  build-system = [ setuptools-scm ];
   src = ./.;
 
   propagatedBuildInputs = [
diff --git a/flake.lock b/flake.lock
index a1c11b6..009598e 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,11 +2,11 @@
   "nodes": {
     "pydantic-uuid-model": {
       "locked": {
-        "lastModified": 1751309415,
-        "narHash": "sha256-qKSRotFL6KmztfFiGMP5NTuQh1WXgnJEAgvSeywf5cc=",
+        "lastModified": 1765731033,
+        "narHash": "sha256-CYb1OHZGmZBnuntiPXfW8iAqOEY4qJWWT+zT+KYXMb0=",
         "ref": "refs/heads/main",
-        "rev": "746afe85fe0bab5c16c81a321d9c77a34d7b0132",
-        "revCount": 3,
+        "rev": "591b66367b8b6180616b60cfca017c37eeb4edc8",
+        "revCount": 4,
         "type": "git",
         "url": "https://git.chaosbit.de/bit/pydanticuuidmodel"
       },