diff --git a/nix/sources.json b/nix/sources.json
index 41ffd61..2d2d79a 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -19,15 +19,15 @@
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nixpkgs-unstable": {
-        "branch": "master",
+        "branch": "nixos-unstable",
         "description": "A read-only mirror of NixOS/nixpkgs tracking the released channels. Send issues and PRs to",
         "homepage": "https://github.com/NixOS/nixpkgs",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "ee9154c4c1a51a6b1129e8bf8b728ab6432eda3e",
-        "sha256": "1j1laj1b44022k2jmidp0gb8jx1yp4rsjgzcxmxkwlkv7b04bza3",
+        "rev": "e5cc06a1e806070693add4f231060a62b962fc44",
+        "sha256": "04543i332fx9m7jf6167ac825s4qb8is0d0x0pz39il979mlc87v",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/ee9154c4c1a51a6b1129e8bf8b728ab6432eda3e.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/e5cc06a1e806070693add4f231060a62b962fc44.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     }
 }