diff --git a/npins/sources.json b/npins/sources.json
index 08e27e1..0e1ad3d 100644
--- a/npins/sources.json
+++ b/npins/sources.json
@@ -45,8 +45,8 @@
     "nixpkgs": {
       "type": "Channel",
       "name": "nixpkgs-unstable",
-      "url": "https://releases.nixos.org/nixpkgs/nixpkgs-24.05pre623247.c4200cb341ee/nixexprs.tar.xz",
-      "hash": "08ijcyhlwsji1ba4flrrv1i3gxrk7cpdpyxpl4whpr3qcjnaq2iz"
+      "url": "https://releases.nixos.org/nixpkgs/nixpkgs-24.05pre623791.cc6431d55980/nixexprs.tar.xz",
+      "hash": "0ik0qwhdiv5vhyfjkk4s0mqg90x5rfvb8v4n5lvj0zyyspwirwz8"
     },
     "rat": {
       "type": "GitRelease",