diff --git a/flake.nix b/flake.nix
index 0c83411..4d33fa0 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,6 +2,7 @@
   description = "staxman";
 
   inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.11";
     flake-parts.url = "github:hercules-ci/flake-parts";
     rust-overlay.url = "github:oxalica/rust-overlay";
     rust-crate2nix = {