diff --git a/flake.nix b/flake.nix
index 1b3c5fd..54fbc7b 100755
--- a/flake.nix
+++ b/flake.nix
@@ -2,7 +2,7 @@
   description = "System configuration flake.";
 
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable/b74a56e2acce8fe88a575287a20ac196d8d01938";
     # stablepkgs.url = "github:nixos/nixpkgs/nixos-24.05";
     # bleedingpkgs.url = "github:nixos/nixpkgs/master";
     # nixpkgs-unstable-small.url = "github:nixos/nixpkgs/nixos-unstable-small";