diff --git a/flake.lock b/flake.lock
index 5001fbf..d51d5d7 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,14 +2,16 @@
   "nodes": {
     "flake-parts": {
       "inputs": {
-        "nixpkgs-lib": "nixpkgs-lib"
+        "nixpkgs-lib": [
+          "nixpkgs"
+        ]
       },
       "locked": {
-        "lastModified": 1719994518,
-        "narHash": "sha256-pQMhCCHyQGRzdfAkdJ4cIWiw+JNuWsTX7f0ZYSyz0VY=",
+        "lastModified": 1726153070,
+        "narHash": "sha256-HO4zgY0ekfwO5bX0QH/3kJ/h4KvUDFZg8YpkNwIbg1U=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "9227223f6d922fee3c7b190b2cc238a99527bbb7",
+        "rev": "bcef6817a8b2aa20a5a6dbb19b43e63c5bf8619a",
         "type": "github"
       },
       "original": {
@@ -20,11 +22,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1720031269,
-        "narHash": "sha256-rwz8NJZV+387rnWpTYcXaRNvzUSnnF9aHONoJIYmiUQ=",
+        "lastModified": 1727348695,
+        "narHash": "sha256-J+PeFKSDV+pHL7ukkfpVzCOO7mBSrrpJ3svwBFABbhI=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "9f4128e00b0ae8ec65918efeba59db998750ead6",
+        "rev": "1925c603f17fc89f4c8f6bf6f631a802ad85d784",
         "type": "github"
       },
       "original": {
@@ -34,18 +36,6 @@
         "type": "github"
       }
     },
-    "nixpkgs-lib": {
-      "locked": {
-        "lastModified": 1719876945,
-        "narHash": "sha256-Fm2rDDs86sHy0/1jxTOKB1118Q0O3Uc7EC0iXvXKpbI=",
-        "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/5daf0514482af3f97abaefc78a6606365c9108e2.tar.gz"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/5daf0514482af3f97abaefc78a6606365c9108e2.tar.gz"
-      }
-    },
     "root": {
       "inputs": {
         "flake-parts": "flake-parts",
diff --git a/flake.nix b/flake.nix
index 943e365..e847c4c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -4,6 +4,7 @@
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
     flake-parts.url = "github:hercules-ci/flake-parts";
+    flake-parts.inputs.nixpkgs-lib.follows = "nixpkgs";
   };
 
   outputs = inputs@{ flake-parts, ... }:
@@ -13,11 +14,11 @@
         devShells.default = pkgs.mkShell {
           packages = with pkgs; [
             bashInteractive
-            python38
             python39
             python310
-            (python311.withPackages(ps: [ps.setuptools ps.tox ps.wheel]))
-            python312
+            python311
+            (python312.withPackages(ps: [ps.setuptools ps.tox ps.wheel]))
+            python313
             pypy3
             twine
             mypy