diff --git a/npins/sources.json b/npins/sources.json
index 20eb7ce..0714fe8 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-24.05pre612007.2748d22b45a9/nixexprs.tar.xz",
-      "hash": "0l6yzjxvlilidsixqz54110n84yzcjsm74wvrs69pvs73gk1w1xa"
+      "url": "https://releases.nixos.org/nixpkgs/nixpkgs-24.05pre612448.2fd19c8be255/nixexprs.tar.xz",
+      "hash": "0gflai1vfcjqh9mhdjx31n1wfnx9dk2nrc3rb7rrrwf1m3xdqqy9"
     },
     "rat": {
       "type": "GitRelease",