diff --git a/npins/sources.json b/npins/sources.json
index c7c3f29..694802d 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-25.05pre744509.88a55dffa4d4/nixexprs.tar.xz",
-      "hash": "031apspqfm8z4yczj8126chfc7mijnmnxzqg0inaz1dwi4pzwlbz"
+      "url": "https://releases.nixos.org/nixpkgs/nixpkgs-25.05pre744748.f898cbfddfab/nixexprs.tar.xz",
+      "hash": "0zpdl5dcdki57a8kmmb9n7cd4pm8rsxzg7xsppn0gg13y2asyni5"
     },
     "rat": {
       "type": "GitRelease",