diff --git a/npins/sources.json b/npins/sources.json
index 220e5a4..30c3cfe 100644
--- a/npins/sources.json
+++ b/npins/sources.json
@@ -73,8 +73,8 @@
     "nixpkgs": {
       "type": "Channel",
       "name": "nixpkgs-unstable",
-      "url": "https://releases.nixos.org/nixpkgs/nixpkgs-25.05pre711046.8edf06bea5bc/nixexprs.tar.xz",
-      "hash": "1mwsn0rvfm603svrq3pca4c51zlix5gkyr4gl6pxhhq3q6xs5s8y"
+      "url": "https://releases.nixos.org/nixpkgs/nixpkgs-25.05pre712942.af51545ec9a4/nixexprs.tar.xz",
+      "hash": "0kw997q119nri7sz3d3dwhb47w49g3a3dzc99sizwx14mfc23hjk"
     },
     "rat": {
       "type": "GitRelease",