diff --git a/npins/sources.json b/npins/sources.json
index b4a18ba..2fae245 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-25.05pre755223.632f04521e84/nixexprs.tar.xz",
-      "hash": "13aw89p6riwmaq21gc2pby9kzkx523psin41yi4wldha03mkxkis"
+      "url": "https://releases.nixos.org/nixpkgs/nixpkgs-25.05pre755883.dad564433178/nixexprs.tar.xz",
+      "hash": "13b4ywwnid3pqy1fzlf5hz165xzrwrd80diyiy2mdvarwphs18wp"
     },
     "rat": {
       "type": "GitRelease",