diff --git a/npins/sources.json b/npins/sources.json
index ef84869..449eb8f 100644
--- a/npins/sources.json
+++ b/npins/sources.json
@@ -107,8 +107,8 @@
     "nixpkgs": {
       "type": "Channel",
       "name": "nixpkgs-unstable",
-      "url": "https://releases.nixos.org/nixpkgs/nixpkgs-25.11pre809520.5929de975bcf/nixexprs.tar.xz",
-      "hash": "1fg1ab448wdbrs6yjbjc5ijcvqa38xq4wai0i5qp844saflag4fd"
+      "url": "https://releases.nixos.org/nixpkgs/nixpkgs-25.11pre808367.59138c7667b7/nixexprs.tar.xz",
+      "hash": "0cbkdnzvfhi8b3n113q29rg441zm7m05g6b83yzlx2h9a1mmg3yr"
     },
     "rat": {
       "type": "GitRelease",
diff --git a/pkgs/alejandra-custom/package.nix b/pkgs/alejandra-custom/package.nix
index 957ce50..8113b88 100644
--- a/pkgs/alejandra-custom/package.nix
+++ b/pkgs/alejandra-custom/package.nix
@@ -5,6 +5,7 @@
 }:
 alejandra.overrideAttrs (prev: {
   pname = "alejandra-custom";
+  version = "0-unstable-2024-07-21";
 
   patches =
     (prev.patches or [])