diff --git a/npins/sources.json b/npins/sources.json
index 1b3e687..085402a 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-23.11pre550792.3f21a22b5aaf/nixexprs.tar.xz",
-      "hash": "1sbsqmhrmbh3dqk723bmvvyc1is19zfhkbwahx9s96ia0wwr8vw5"
+      "url": "https://releases.nixos.org/nixpkgs/nixpkgs-23.11pre551191.51a01a7e5515/nixexprs.tar.xz",
+      "hash": "0y8j1jflm0b5bqny9a3xfq4z65p807rhr897adbfz25f9wlp945v"
     },
     "rofi-calc": {
       "type": "GitRelease",