diff --git a/flake.nix b/flake.nix
index 1b2c7118..5bfd09f4 100644
--- a/flake.nix
+++ b/flake.nix
@@ -96,12 +96,13 @@
     # which represents the GitHub repository URL + branch/commit-id/tag.
 
     # Official NixOS package source, using nixos's stable branch by default
-    nixpkgs.url = "github:nixos/nixpkgs/nixos-23.11";
-    # nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    # nixpkgs.url = "github:nixos/nixpkgs/nixos-23.11";
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
     nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
 
     # for macos
-    nixpkgs-darwin.url = "github:nixos/nixpkgs/nixpkgs-23.11-darwin";
+    # nixpkgs-darwin.url = "github:nixos/nixpkgs/nixpkgs-23.11-darwin";
+    nixpkgs-darwin.url = "github:nixos/nixpkgs/nixos-unstable";
     nix-darwin = {
       url = "github:lnl7/nix-darwin";
       inputs.nixpkgs.follows = "nixpkgs-darwin";