diff --git a/nix/sources.json b/nix/sources.json
index f1e23f5e..ecdc901d 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -16,8 +16,8 @@
     "nixpkgs": {
       "type": "Channel",
       "name": "nixpkgs-unstable",
-      "url": "https://releases.nixos.org/nixpkgs/nixpkgs-26.05pre930822.ed142ab1b3a0/nixexprs.tar.xz",
-      "hash": "sha256-XH6awru9NnBc/m+2YhRNT8r1PAKEiPGF3gs//F3ods0="
+      "url": "https://releases.nixos.org/nixpkgs/nixpkgs-26.05pre937085.6308c3b21396/nixexprs.tar.xz",
+      "hash": "sha256-RuGWBqXVEsZwwBvRGS/nRrA6PQyOQwVaAu139Z853Bk="
     }
   },
   "version": 7