diff --git a/systems/x86_64/harbinger/flake.nix b/systems/x86_64/harbinger/flake.nix
index 1c9f7ab..a679b12 100644
--- a/systems/x86_64/harbinger/flake.nix
+++ b/systems/x86_64/harbinger/flake.nix
@@ -9,7 +9,7 @@
     # which represents the GitHub repository URL + branch/commit-id/tag.
 
     # Official NixOS package source, using nixos-unstable branch here
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-22.11";
     # home-manager, used for managing user configuration
     home-manager = {
       url = "github:nix-community/home-manager/release-22.11";