diff --git a/nix/sources.json b/nix/sources.json
index 8da6734..6c017cd 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -12,15 +12,15 @@
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nixpkgs": {
-        "branch": "release-20.09",
+        "branch": "nixpkgs-unstable",
         "description": "Nix Packages collection",
         "homepage": "",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "2ee9a4fb97d8028771bbb34253412c88b03645b7",
-        "sha256": "1jf8mik57x956x7w7qyp59afb91qzbkkhmhly307cqvs394pjm44",
+        "rev": "0d337eb6b77c8911cd02ed92e63fcc2a8949b404",
+        "sha256": "1xm6ss7j3zscpiczz3kxjad3jd1qvy5zpm35kqri6p9mp4jzna1x",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/2ee9a4fb97d8028771bbb34253412c88b03645b7.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/0d337eb6b77c8911cd02ed92e63fcc2a8949b404.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     }
 }