diff --git a/npins/sources.json b/npins/sources.json
index 9920843..b453fa7 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-24.05pre614637.fd16bb6d3bcc/nixexprs.tar.xz",
-      "hash": "08c53bzcyc87jml0d9gdyhihj6xl72nqfb5zkmkp4vl37pjs73dp"
+      "url": "https://releases.nixos.org/nixpkgs/nixpkgs-24.05pre615035.f2d7a289c5a5/nixexprs.tar.xz",
+      "hash": "1dz3qjnvrqk8j0i90dn2lz64p51mva1cizznhshas1pbr4v2p2za"
     },
     "rat": {
       "type": "GitRelease",