diff --git a/npins/sources.json b/npins/sources.json
index 7018eaf..927c202 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-24.05pre592652.f945939fd679/nixexprs.tar.xz",
-      "hash": "0w59nh0m01xz75hd92vpw4zz7hkyizscd2b9w3dvjvmym6z1jnxx"
+      "url": "https://releases.nixos.org/nixpkgs/nixpkgs-24.05pre594687.0e7f98a5f301/nixexprs.tar.xz",
+      "hash": "0hbil2vaa34v3k8d29bcv8p626y6j0m3wap27p5sxx62rapl5zcq"
     },
     "rat": {
       "type": "GitRelease",